Merge branch 'main' into feature/scheduled-send

# Conflicts:
#	app/(main)/[locale]/page.tsx
#	components/email/email-list.tsx
#	components/email/email-viewer.tsx

.env.dev.example

@@ -47,8 +47,3 @@ LOG_LEVEL=debug
 # LOGIN_IMPRINT_URL=https://example.com/imprint
 # LOGIN_PRIVACY_POLICY_URL=https://example.com/privacy
 # LOGIN_WEBSITE_URL=https://example.com
-
-# Per-domain branding overrides. Each entry must have "host" (exact or
-# "*.subdomain" wildcard) plus any subset of branding fields to override.
-# Unset fields fall through to the global values above.
-# DOMAIN_BRANDING=[{"host":"localhost","loginCompanyName":"Local Dev"}]

.env.example

@@ -225,29 +225,6 @@ LOGIN_COMPANY_NAME=Bulwark Webmail
 # URL for the company website link on the login page.
 LOGIN_WEBSITE_URL=https://bulwarkmail.org
 
-# ---------------------------------------------------------------------------
-# Per-domain branding overrides (optional)
-# ---------------------------------------------------------------------------
-#
-# When you serve the webmail on multiple hostnames, each hostname can override
-# a subset of branding fields. Unset fields fall back to the global values
-# above. Match is on the request's Host (or X-Forwarded-Host) header.
-#
-# Use the leftmost label "*." to match any subdomain (e.g. "*.example.com"
-# matches mail.example.com and any deeper subdomain, but NOT example.com).
-# Exact matches always win over wildcards; the longest wildcard suffix wins
-# among multiple wildcard matches.
-#
-# Overridable keys: appName, appShortName, appDescription, faviconUrl,
-# pwaIconUrl, pwaThemeColor, pwaBackgroundColor, appLogoLightUrl,
-# appLogoDarkUrl, loginLogoLightUrl, loginLogoDarkUrl, loginCompanyName,
-# loginImprintUrl, loginPrivacyPolicyUrl, loginWebsiteUrl.
-#
-# Prefer setting this from the admin dashboard (PATCH /api/admin/config).
-# The env-var form is provided for stateless deployments.
-#
-# DOMAIN_BRANDING=[{"host":"maildomain1.com","loginCompanyName":"Company One","loginLogoLightUrl":"/branding/one-color.svg","loginLogoDarkUrl":"/branding/one-white.svg","loginWebsiteUrl":"https://one.example"},{"host":"maildomain2.com","loginCompanyName":"Company Two","faviconUrl":"/branding/two-favicon.svg"},{"host":"*.intranet.example.com","loginCompanyName":"Internal"}]
-
 # =============================================================================
 # Extension Directory / Marketplace
 # =============================================================================

CHANGELOG.md

@@ -1,96 +1,5 @@
 # Changelog
 
-## 1.7.3 (2026-06-04)
-
-### Features
-
-- **Mail**: Inline attachment preview — reliable MIME detection with inline PDF on desktop and mobile
-- **Mail**: Preview composer attachments inline (click to open)
-- **Mail**: Preview `.eml` (`message/rfc822`) attachments like an email
-- **Mail**: Read receipts (MDN, RFC 8098)
-- **Mail**: Editable, layout-preserving quote island when replying
-- **Mail**: Surface the most severe SPF result and hide the "via" badge on spoofed mail
-- **Calendar**: Per-viewer colors for shared calendars (#345)
-- **Filters**: Extended filter rules — attachment field and multi-value conditions
-- **Settings**: New built-in themes — Aurora Glass and Elastic
-- **Settings**: Theme cards render as a mini mailbox mockup from theme colors, with light/dark variant chips
-- **Plugins**: Localizable sandboxed plugins (manifest locales + `api.i18n.t`)
-- **Plugins**: `/api/translate` proxy and email body exposed to plugins
-- **Admin**: Toggle for search-engine indexing (robots)
-- **Admin**: `passwordHashFile` in `admin.json`
-- **Admin**: `sessionSecretFile` and `oauthClientSecretFile` for file-based secrets in JSON config
-- **PWA**: Configurable install screenshots (per-domain)
-- **i18n**: Hungarian locale support
-
-### Fixes
-
-- **Files**: Store Files as real `FileNode` hierarchy, migrate legacy flat-named files on load, and list folders via `FileNode/get` so they are visible (#379)
-- **Files**: Treat a blob-less `FileNode` as the only folder signal and migrate legacy dir-markers
-- **Mail**: Empty Trash for shared and group folders (#387)
-- **Mail**: Move mail from a shared group inbox to a personal inbox (#375)
-- **Mail**: Preserve the HTML signature when sending a quick reply
-- **Mail**: Stop body clipping under the fold when the email sets `html`/`body` `height: 100%`
-- **Mail**: Drop single-letter `R:`/`I:` subject prefix tokens and deduplicate localized reply/forward prefixes
-- **Mail**: No more 404 console spam for missing sender favicons
-- **Auth**: Discover OIDC metadata server-side to avoid CORS failures (#382)
-- **Send**: Route the Sent copy to the shared-mailbox account on per-identity send
-- **Routing**: Honour `basePath` in the plugin sandbox, `http.post` proxy, and branding
-- **i18n**: Localize the PWA install prompt, reply/forward quote header (incl. sender address), `<html lang>`, and per-locale `<head>` description; add missing `settings.folders.role_memos` key
-- **Themes**: Plugin slot iframes inherit host font and color tokens
-- **Theme**: Gate preview "open in new tab" on inline-safe MIME types
-- **Appearance**: Move Themes settings into the Appearance category with a distinct tab icon; clicking the active theme is a no-op
-- **UI**: Fix invisible dark-mode borders (border token collided with secondary)
-- **UI**: Remove the 16px empty strip beside the collapsed sidebar
-- **UI**: Align top bars to a uniform `h-14` height and the account selector header to the search/reply toolbars
-- **UI**: Close pane gaps by centering the resize handle on the seam
-- **Settings**: Fix section gears permanently hijacking the active tab
-
-## 1.7.2 (2026-05-28)
-
-### Features
-
-- **Mail**: Scheduled send and send delay (#322)
-- **Mail**: Drag emails out to the file explorer as `.eml`
-- **Mail**: Import emails from `.zip` archives
-- **Mail**: "Move to Trash and mark as read" delete action (#323)
-- **Mail**: Include group inboxes in the unified mailbox view (#328)
-- **Mail**: Locale-aware date format in the email list with a preset picker (#331)
-- **Mail**: Allow drag-and-drop into shared mailboxes
-- **Composer**: Ctrl/Cmd+Enter sends the open draft
-- **Settings**: New Downloads tab with template editor for `.eml` and attachment filenames
-- **Settings**: Filename transform settings and an ASCII-only "date (from-to) subject" template
-- **Settings**: Post-export action (keep / archive / trash)
-- **Settings**: Template for multi-email `.zip` filenames
-- **Admin**: Per-domain branding editor with overrides on `/api/config`, manifest, and PWA icon (#332)
-- **Admin**: Policy-controlled push relay URL with optional user lock
-- **i18n**: `NEXT_PUBLIC_DEFAULT_LOCALE` for fallback UI locale (#243)
-
-### Fixes
-
-- **Mail**: Editable HTML signature in new mail; clean state on every compose entry (#329)
-- **Mail**: Report real upload progress with XHR progress events (#333)
-- **Mail**: Restore `blob:` in `object-src` and `frame-src` CSP for PDF/HTML previews
-- **Mail**: Match user-avatar treatment on quick reply
-- **Email viewer**: Stop shattering table cells with `word-break: break-word`
-- **Composer**: Scope Ctrl/Cmd+Enter send to the focused composer
-- **Composer**: Stop closing the form when editing any field
-- **Pro**: Keep the empty viewer pane visible in the split layout
-- **Pro**: Prevent an empty main pane when reordering tabs across panes
-- **Mobile**: Collapse focus mail layout to multi-line
-- **Mobile**: Keep a gutter on bare-HTML and plain-text emails
-- **Calendar**: Align continued multi-week events with the week's left edge
-- **Calendar**: Show the end date in the event popover for multi-day events (#318)
-- **Calendar**: Convert `recurrenceRules` to singular in batch create
-- **Calendar**: Handle malformed event dates (#316)
-- **Files**: Stop URL-encoding drag-out filenames and preserve Unicode letters
-- **Routing**: Prefix remaining `<img>`, favicon, and WebDAV URLs with `basePath` (#319)
-- **Routing**: Prefix hand-written URLs with `basePath` for subpath deployments
-- **Auth**: `OAUTH_ALLOW_PRIVATE_ENDPOINTS` for split-DNS setups
-
-### i18n
-
-- Add missing translation keys across 16 locales
-
 ## 1.7.1 (2026-05-22)
 
 ### Features

FEATURES.md

@@ -7,10 +7,7 @@
 - Unified mailbox view across all connected accounts
 - Three selectable mail layouts: split (three-pane), focused list, and reading pane at bottom
 - Draft auto-save with identity preservation, persisted HTML body, and proper `In-Reply-To` / `References` headers on replies
-- Attachment upload, download, drag-out to local file system, and inline preview – images, inline PDF on desktop and mobile, composer attachments (click to open), and `.eml` (`message/rfc822`) attachments rendered like an email; image thumbnails and forgotten-attachment warning
-- Scheduled send and configurable send delay
-- Read receipts (MDN, RFC 8098)
-- Editable, layout-preserving quote island when replying
+- Attachment upload, download, drag-out to local file system, and inline preview; image thumbnails and forgotten-attachment warning
 - Full-text search with JMAP filter panel, search chips, wildcards, OR conditions, and cross-mailbox queries
 - Batch operations – multi-select, archive, delete, move, tag
 - Archive modes – direct, by year, or by month
@@ -39,7 +36,7 @@
 - Auto-generated birthday calendar from contacts
 - Virtual locations (video conference URLs) as first-class event fields
 - Task management with due dates, priority, and completion status
-- Shared calendars with CalDAV discovery, multi-account home resolution, and per-viewer colors
+- Shared calendars with CalDAV discovery and multi-account home resolution
 - Week numbers, event hover preview, notifications with sound picker
 - Real-time sync via JMAP push
 
@@ -55,7 +52,7 @@
 ## Filters & Templates
 
 - Server-side filters via JMAP Sieve Scripts (RFC 9661)
-- Visual rule builder with expanded view; conditions (From, To, Subject, Size, Body, Attachment…) with multi-value matching and actions (Move, Forward, Star, Discard…)
+- Visual rule builder with expanded view; conditions (From, To, Subject, Size, Body…) and actions (Move, Forward, Star, Discard…)
 - Preserves rules authored in other clients
 - Raw Sieve editor with syntax validation
 - Vacation responder with date range scheduling
@@ -63,7 +60,7 @@
 
 ## Files
 
-- JMAP FileNode browser (Stalwart native cloud storage) with a real folder hierarchy; legacy flat-named files are migrated into nested `FileNode` folders automatically on load
+- JMAP FileNode browser (Stalwart native cloud storage)
 - Streamed WebDAV PUT upload and folder upload with progress tracking
 - Dynamic upload limits based on server configuration
 - Grid and list views with sorting by name, size, or date
@@ -75,7 +72,7 @@
 - External content blocked by default, with a trusted senders list
 - HTML sanitization via DOMPurify
 - S/MIME – manage certificates, sign, encrypt, decrypt, and verify; legacy 3DES / PBE support; per-account key isolation
-- SPF / DKIM / DMARC status indicators – surfaces the most severe SPF result and hides the "via" badge on spoofed mail
+- SPF / DKIM / DMARC status indicators
 - OAuth2 / OIDC with PKCE (Keycloak, Authentik, or built-in), OAuth-only mode, OAuth app passwords, and non-interactive SSO for embedded deployments
 - TOTP two-factor authentication
 - Account security panel for password and 2FA management via the Stalwart admin API
@@ -88,7 +85,6 @@
 
 - Selectable mail layouts (split three-pane, focused list, reading pane at bottom) with resizable columns
 - Dark and light themes with intelligent email color transformation
-- Bundled color themes including Aurora Glass and Elastic; theme cards render as a mini mailbox mockup built from the theme's own colors, with light/dark variant chips
 - Responsive desktop, tablet, and mobile layouts
 - Full keyboard navigation
 - Drag-and-drop email organization and tag assignment
@@ -102,7 +98,7 @@
 
 ## Internationalization
 
-18 languages: Česky · Dansk · Deutsch · English · Español · Français · Italiano · Latviešu · Magyar · Nederlands · Polski · Português · Türkçe · Русский · Українська · 한국어 · 日本語 · 简体中文
+17 languages: Česky · Dansk · Deutsch · English · Español · Français · Italiano · Latviešu · Nederlands · Polski · Português · Türkçe · Русский · Українська · 한국어 · 日本語 · 简体中文
 
 Automatic browser detection with persistent preference. Configurable locale URL prefix via `NEXT_PUBLIC_LOCALE_PREFIX`.
 
@@ -122,9 +118,7 @@ Automatic browser detection with persistent preference. Configurable locale URL
 - Web setup wizard for first launch – guides through JMAP server(s), OAuth/OIDC, session secret, logging, branding (with file upload), and admin password; persists to the admin config dir, no `.env.local` editing required
 - Stalwart admin dashboard with dedicated policy sections, collapsed into a single tabbed page
 - Split admin storage: `ADMIN_CONFIG_DIR` (operator-authored, mountable read-only after setup) and `ADMIN_STATE_DIR` (runtime audit log and login timestamps)
-- File-based secrets for JSON config: `passwordHashFile` (admin password), `sessionSecretFile`, and `oauthClientSecretFile` for Docker/Kubernetes secret mounts
-- Admin toggle for search-engine indexing (`robots.txt` / `noindex`)
-- Plugin system – schema-driven config UI, render and intercept hooks, `onAvatarResolve`, `onBeforeEmailSend`, composer-sidebar and email-banner slots, calendar event slots, i18n APIs (localizable sandboxed plugins via manifest locales and `api.i18n.t`), an `/api/translate` proxy, email-body access, and managed policy enforcement
+- Plugin system – schema-driven config UI, render and intercept hooks, `onAvatarResolve`, `onBeforeEmailSend`, composer-sidebar and email-banner slots, calendar event slots, i18n APIs, and managed policy enforcement
 - Plugin hot-reload and dev-folder loading, on-demand `src/` bundling via esbuild, and `http:fetch` permission with `httpOrigins`
 - Themes – upload, enforce, and manage admin-controlled themes as ZIP bundles
 - Extension marketplace – browse and install plugins and themes from a configurable directory (`EXTENSION_DIRECTORY_URL`); install/uninstall restricted to the admin dashboard
@@ -132,7 +126,7 @@ Automatic browser detection with persistent preference. Configurable locale URL
 
 ## Operations
 
-- Progressive Web App with service worker, install prompt, web push notifications for inbox mail, dynamic manifest, and configurable (per-domain) install screenshots
+- Progressive Web App with service worker, install prompt, web push notifications for inbox mail, and dynamic manifest
 - Automatic update check with server-side logging of new releases and a non-dismissible update notice
 - Structured logging (`text` or `json`) with category-based levels
 - Anonymous instance telemetry (opt-out via admin UI or `BULWARK_TELEMETRY=off`) – version, platform, bucketed account counts, feature toggles only

README.md

@@ -12,7 +12,7 @@ A modern, self-hosted webmail client for [Stalwart Mail Server](https://stalw.ar
 
 [![License: AGPL v3](https://img.shields.io/badge/license-AGPL%20v3-blue.svg?logo=gnu&logoColor=white)](LICENSE)
 [![Discord](https://img.shields.io/discord/1482128142939455674?color=7289da&label=discord&logo=discord&logoColor=white)](https://discord.gg/tYCujymGrT)
-[![Version](https://img.shields.io/badge/version-1.7.3-green.svg?logo=git&logoColor=white)](CHANGELOG.md)
+[![Version](https://img.shields.io/badge/version-1.7.1-green.svg?logo=git&logoColor=white)](CHANGELOG.md)
 [![Docker](https://img.shields.io/badge/docker-ghcr.io%2Fbulwarkmail%2Fwebmail-blue?logo=docker&logoColor=white)](https://ghcr.io/bulwarkmail/webmail)
 [![Grafana](https://img.shields.io/badge/grafana-dashboard-orange?logo=grafana&logoColor=white)](https://grafana.external.bulwarkmail.org/)
 
@@ -86,7 +86,7 @@ Bulwark is a full webmail suite, not just an inbox. It bundles the four apps mos
 - **Contacts** – multiple address books, groups, vCard import/export
 - **Files** – Stalwart's JMAP FileNode storage with previews and folder upload
 
-Plus the infrastructure around them: a web setup wizard, OAuth2 / OIDC SSO, TOTP 2FA, multi-account with HTTP/2 connection pooling, 18 languages, PWA install, dark/light themes, a plugin system with an extension marketplace, and an admin dashboard.
+Plus the infrastructure around them: a web setup wizard, OAuth2 / OIDC SSO, TOTP 2FA, multi-account with HTTP/2 connection pooling, 15 languages, PWA install, dark/light themes, a plugin system with an extension marketplace, and an admin dashboard.
 
 Full feature list: **[FEATURES.md](FEATURES.md)**.
 
@@ -211,12 +211,6 @@ LOGIN_COMPANY_NAME=My Company
 LOGIN_WEBSITE_URL=https://example.com
 LOGIN_IMPRINT_URL=https://example.com/imprint
 LOGIN_PRIVACY_POLICY_URL=https://example.com/privacy
-
-# Per-domain overrides (optional). When the webmail is served on multiple
-# hostnames, each host can override any subset of the branding fields above.
-# Match is on the request Host (or X-Forwarded-Host). Use "*.example.com" to
-# match any subdomain. Unset fields fall back to the global values.
-DOMAIN_BRANDING=[{"host":"maildomain1.com","loginCompanyName":"Company One","loginLogoLightUrl":"/branding/one.svg"},{"host":"maildomain2.com","loginCompanyName":"Company Two"}]
 ```
 
 </details>

VERSION

@@ -1 +1 @@
-1.7.3
+1.7.1

app/(main)/[locale]/calendar/page.tsx

@@ -60,7 +60,6 @@ import { useConfirmDialog } from "@/hooks/use-confirm-dialog";
 import { CreateCalendarModal } from "@/components/calendar/create-calendar-modal";
 import { getUserParticipantId } from "@/lib/calendar-participants";
 import { generateBirthdayEvents, createBirthdayCalendar, BIRTHDAY_CALENDAR_ID } from "@/lib/birthday-calendar";
-import { sharedCalendarColorKey, pickUnusedCalendarColor } from "@/lib/shared-calendar-colors";
 import { debug } from "@/lib/debug";
 import { consumePendingWebcal, hasPendingWebcal, subscribeToPendingWebcal } from "@/lib/protocol-handlers/session";
 import type { ParsedWebcal } from "@/lib/protocol-handlers/webcal";
@@ -98,9 +97,6 @@ export default function CalendarPage() {
     refreshAllSubscriptions, icalSubscriptions,
   } = useCalendarStore();
   const { firstDayOfWeek, timeFormat, showWeekNumbers, enableCalendarTasks, showTasksOnCalendar, calendarHoverPreview, showBirthdayCalendar, birthdayCalendarColor, updateSetting } = useSettingsStore();
-  const sharedCalendarColors = useSettingsStore((s) => s.sharedCalendarColors);
-  const setSharedCalendarColor = useSettingsStore((s) => s.setSharedCalendarColor);
-  const removeSharedCalendarColor = useSettingsStore((s) => s.removeSharedCalendarColor);
   const taskStore = useTaskStore();
   const fetchTasksFn = useTaskStore(state => state.fetchTasks);
   const { identities } = useIdentityStore();
@@ -1034,47 +1030,10 @@ export default function CalendarPage() {
     try { return t('birthday_calendar'); } catch { return 'Birthdays'; }
   })();
 
-  // Apply each shared calendar's local color override (per-viewer recolor,
-  // #345). The override replaces the calendar's color and wins over per-event
-  // colors via the `colorIsLocalOverride` flag (see getEventColor). Personal
-  // calendars are passed through untouched.
-  const displayCalendars = useMemo(() => {
-    return calendars.map((cal) => {
-      if (!cal.isShared) return cal;
-      const override = sharedCalendarColors[sharedCalendarColorKey(cal)];
-      if (!override) return cal;
-      return { ...cal, color: override, colorIsLocalOverride: true };
-    });
-  }, [calendars, sharedCalendarColors]);
-
-  // Auto-assign a random, not-yet-used palette color to any freshly shared
-  // calendar so multiple shared calendars don't collide on one color. Runs
-  // once per calendar (guarded by the presence of an existing key), and the
-  // user can still overwrite it from the sidebar.
-  useEffect(() => {
-    const shared = calendars.filter((c) => c.isShared);
-    const missing = shared.filter((c) => !sharedCalendarColors[sharedCalendarColorKey(c)]);
-    if (missing.length === 0) return;
-    // Seed "used" with personal calendar colors plus already-assigned shared
-    // overrides so the picks stay distinct from what's already on screen.
-    const used = new Set<string>();
-    for (const c of calendars) {
-      if (!c.isShared && c.color) used.add(c.color.toLowerCase());
-    }
-    for (const color of Object.values(sharedCalendarColors)) {
-      if (color) used.add(color.toLowerCase());
-    }
-    for (const cal of missing) {
-      const color = pickUnusedCalendarColor(used);
-      used.add(color.toLowerCase());
-      setSharedCalendarColor(sharedCalendarColorKey(cal), color);
-    }
-  }, [calendars, sharedCalendarColors, setSharedCalendarColor]);
-
   const allCalendars = useMemo(() => {
-    if (!showBirthdayCalendar) return displayCalendars;
-    return [...displayCalendars, createBirthdayCalendar(birthdayCalendarName, birthdayCalendarColor)];
-  }, [displayCalendars, showBirthdayCalendar, birthdayCalendarName, birthdayCalendarColor]);
+    if (!showBirthdayCalendar) return calendars;
+    return [...calendars, createBirthdayCalendar(birthdayCalendarName, birthdayCalendarColor)];
+  }, [calendars, showBirthdayCalendar, birthdayCalendarName, birthdayCalendarColor]);
 
   const visibleEvents = useMemo(() => {
     const filtered = events.filter((e) => {
@@ -1260,7 +1219,7 @@ export default function CalendarPage() {
               />
               <TaskListView
                 tasks={taskStore.tasks}
-                calendars={displayCalendars}
+                calendars={calendars}
                 selectedCalendarIds={selectedCalendarIds}
                 filter={taskStore.filter}
                 showCompleted={taskStore.showCompleted}
@@ -1358,21 +1317,8 @@ export default function CalendarPage() {
                   updateSetting('birthdayCalendarColor', color);
                   return;
                 }
-                // Shared calendars: recolor locally only (the viewer usually
-                // can't write the owner's calendar, and it'd recolor it for
-                // everyone). Personal calendars write through to the server.
-                const cal = allCalendars.find((c) => c.id === calendarId);
-                if (cal?.isShared) {
-                  setSharedCalendarColor(sharedCalendarColorKey(cal), color);
-                  return;
-                }
                 updateCalendar(client, calendarId, { color });
               } : undefined}
-              onResetColor={(cal) => {
-                // Drop the local override; the auto-assign effect picks a
-                // fresh unused color (so it never reverts to a collision).
-                removeSharedCalendarColor(sharedCalendarColorKey(cal));
-              }}
               onShareCalendar={client ? (cal) => setSharingCalendarId(cal.id) : undefined}
               onCreateEvent={(cal: Calendar) => {
                 setDefaultCalendarIdForCreate(cal.id);
@@ -1443,7 +1389,7 @@ export default function CalendarPage() {
           onSubscribe={() => setShowSubscriptionModal(true)}
           isMobile={isMobile}
           onNavigateBack={isMobile && mobileReturnToMonth && normalizedViewMode === "day" ? navigateBackToMonth : undefined}
-          calendars={displayCalendars}
+          calendars={calendars}
           selectedCalendarIds={selectedCalendarIds}
           onToggleVisibility={toggleCalendarVisibility}
           enableCalendarTasks={enableCalendarTasks}
@@ -1473,7 +1419,7 @@ export default function CalendarPage() {
               <EventModal
                 key={editEvent?.id ?? 'new'}
                 event={editEvent}
-                calendars={displayCalendars}
+                calendars={calendars}
                 defaultDate={defaultModalDate}
                 defaultEndDate={defaultModalEndDate}
                 defaultAllDay={defaultModalAllDay}
@@ -1496,7 +1442,7 @@ export default function CalendarPage() {
               <TaskModal
                 key={editTask?.id ?? 'new-task'}
                 task={editTask}
-                calendars={displayCalendars}
+                calendars={calendars}
                 onSave={handleSaveTask}
                 onDelete={handleDeleteTask}
                 onClose={() => { setShowTaskModal(false); setEditTask(null); }}
@@ -1583,7 +1529,7 @@ export default function CalendarPage() {
       {detailEvent && detailAnchorRect && (
         <EventDetailPopover
           event={detailEvent}
-          calendar={displayCalendars.find(c => detailEvent.calendarIds[c.id])}
+          calendar={calendars.find(c => detailEvent.calendarIds[c.id])}
           anchorRect={detailAnchorRect}
           onEdit={handleEditFromDetail}
           onDelete={handleDeleteFromDetail}
@@ -1603,7 +1549,7 @@ export default function CalendarPage() {
         <EventModal
           key={editEvent?.id ?? 'new'}
           event={editEvent}
-          calendars={displayCalendars}
+          calendars={calendars}
           defaultDate={defaultModalDate}
           defaultEndDate={defaultModalEndDate}
           defaultAllDay={defaultModalAllDay}
@@ -1620,7 +1566,7 @@ export default function CalendarPage() {
 
       {showImportModal && client && (
         <ICalImportModal
-          calendars={displayCalendars}
+          calendars={calendars}
           client={client}
           initialUrl={pendingSubscription?.url}
           onClose={() => {

app/(main)/[locale]/files/page.tsx

@@ -27,7 +27,7 @@ import { FilePreviewModal } from "@/components/files/file-preview-modal";
 import { loadFilesSettings } from "@/components/files/files-settings-dialog";
 import type { FolderLayout } from "@/components/files/files-settings-dialog";
 import { AppTopBannerSlot } from "@/components/plugins/app-top-banner-slot";
-import { AlertTriangle, Loader2 } from "lucide-react";
+import { AlertTriangle } from "lucide-react";
 
 export default function FilesPage() {
   const router = useRouter();
@@ -48,11 +48,9 @@ export default function FilesPage() {
     supportsFiles,
     selectedResources,
     uploadProgress,
-    migrationProgress,
     clipboard,
     initClient,
     checkSupport,
-    migrateLegacyFlatNodes,
     navigate,
     navigateByPath,
     refresh,
@@ -162,16 +160,13 @@ export default function FilesPage() {
   const storeClient = useFileStore(s => s.client);
   useEffect(() => {
     if (storeClient && supportsFiles === null) {
-      checkSupport().then(async (supported) => {
+      checkSupport().then((supported) => {
         if (supported) {
-          // Upgrade any files created by older builds (flat path-encoded names)
-          // into the real FileNode hierarchy before the first listing.
-          await migrateLegacyFlatNodes();
           navigate(null);
         }
       });
     }
-  }, [storeClient, supportsFiles, checkSupport, migrateLegacyFlatNodes, navigate]);
+  }, [storeClient, supportsFiles, checkSupport, navigate]);
 
   const handleNavigate = useCallback((path: string, resourceId?: string | null) => {
     // Pro shell only: the Account breadcrumb segment signals "go to this
@@ -578,32 +573,6 @@ export default function FilesPage() {
         />
       )}
 
-      {/* Legacy file migration progress (issue #379) */}
-      {migrationProgress && (
-        <div className="fixed inset-0 z-50 flex items-center justify-center bg-black/40 backdrop-blur-sm">
-          <div className="w-[22rem] max-w-[90vw] rounded-lg border border-border bg-background p-6 shadow-xl">
-            <div className="flex items-center gap-3">
-              <Loader2 className="w-5 h-5 text-primary animate-spin shrink-0" />
-              <div>
-                <p className="text-sm font-medium">{t("migration_title")}</p>
-                <p className="text-xs text-muted-foreground">{t("migration_description")}</p>
-              </div>
-            </div>
-            <div className="mt-4 h-1.5 bg-primary/20 rounded-full overflow-hidden">
-              <div
-                className="h-full bg-primary rounded-full transition-all duration-300"
-                style={{ width: migrationProgress.total > 0
-                  ? `${(migrationProgress.current / migrationProgress.total) * 100}%`
-                  : '0%' }}
-              />
-            </div>
-            <p className="mt-2 text-xs text-muted-foreground tabular-nums text-right">
-              {migrationProgress.current} / {migrationProgress.total}
-            </p>
-          </div>
-        </div>
-      )}
-
       <SidebarAppsModal isOpen={showAppsModal} onClose={closeAppsModal} />
       <ConfirmDialog {...confirmDialogProps} />
       </div>

app/(main)/[locale]/layout.tsx

@@ -9,7 +9,6 @@ import { ProtocolLaunchHandlerProvider } from "@/components/protocol/protocol-la
 import { ProInterfaceRedirect } from "@/components/pro/pro-interface-redirect";
 import { PluginDialogHost } from "@/components/plugins/plugin-dialog-host";
 import { PluginConsentDialog } from "@/components/plugins/plugin-consent-dialog";
-import { PWAInstallPrompt } from "@/components/pwa-install-prompt";
 import { locales } from "@/i18n/routing";
 
 export default async function LocaleLayout({
@@ -42,7 +41,6 @@ export default async function LocaleLayout({
                   {children}
                   <PluginDialogHost />
                   <PluginConsentDialog />
-                  <PWAInstallPrompt />
                 </ProtocolLaunchHandlerProvider>
               </TourProvider>
             </EmbeddedBridgeProvider>

app/(main)/[locale]/login/page.tsx

@@ -14,7 +14,7 @@ import { useConfig } from "@/hooks/use-config";
 import { apiFetch, getPathPrefix, withBasePath } from "@/lib/browser-navigation";
 import { cn } from "@/lib/utils";
 import { AlertCircle, Loader2, X, Info, Eye, EyeOff, LogIn, Sun, Moon, Monitor, Check, Shield, Play, Copy } from "lucide-react";
-import { type OAuthMetadata } from "@/lib/oauth/discovery";
+import { discoverOAuth, type OAuthMetadata } from "@/lib/oauth/discovery";
 import { generateCodeVerifier, generateCodeChallenge, generateState } from "@/lib/oauth/pkce";
 import { useUpdateStore, selectBanner } from "@/stores/update-store";
 import type { PublicJmapServerEntry } from "@/lib/admin/jmap-servers";
@@ -329,27 +329,16 @@ export default function LoginPage() {
     if (!oauthEnabled || !serverUrl) return;
     setOauthDiscoveryDone(false);
     setOauthMetadata(null);
-    const controller = new AbortController();
-    // Discover via our own origin rather than fetching the IdP's /.well-known/*
-    // documents directly from the browser. A direct cross-origin discovery
-    // fetch is subject to CORS, and providers like Authentik serve those
-    // documents without Access-Control-Allow-Origin, so the browser blocks the
-    // response and login breaks (issue #382). The proxy runs discovery server
-    // side where CORS does not apply.
-    const query = selectedServer?.id ? `?server_id=${encodeURIComponent(selectedServer.id)}` : "";
-    apiFetch(`/api/auth/oauth/metadata${query}`, { signal: controller.signal })
-      .then(async (res) => (res.ok ? ((await res.json()) as OAuthMetadata) : null))
+    discoverOAuth(effectiveOauthIssuerUrl || serverUrl)
       .then((metadata) => {
         setOauthMetadata(metadata);
         setOauthDiscoveryDone(true);
       })
-      .catch((err) => {
-        if (err?.name === "AbortError") return;
+      .catch(() => {
         setOauthMetadata(null);
         setOauthDiscoveryDone(true);
       });
-    return () => controller.abort();
-  }, [oauthEnabled, serverUrl, effectiveOauthIssuerUrl, selectedServer?.id]);
+  }, [oauthEnabled, serverUrl, effectiveOauthIssuerUrl]);
 
   // Auto-SSO: when enabled with OAUTH_ONLY, skip the login page entirely
   const ssoError = searchParams.get("sso_error");

app/(main)/[locale]/page.tsx

@@ -55,7 +55,7 @@ import { useProMultiAccountMailboxes } from "@/hooks/use-pro-multi-account-mailb
 import { Input } from "@/components/ui/input";
 import { FilePreviewModal } from "@/components/files/file-preview-modal";
 import { isFilePreviewable } from "@/lib/file-preview";
-import { appendHtmlSignature, appendPlainTextSignature } from "@/lib/signature-utils";
+import { appendPlainTextSignature } from "@/lib/signature-utils";
 import { computeReplyThreadingHeaders } from "@/lib/email-threading";
 import { EML_IMPORT_ACCEPT, expandImportableEmails } from "@/lib/eml-import";
 import { resolveReplyFrom } from "@/lib/reply-identity";
@@ -72,7 +72,6 @@ import { plainTextToComposerBody } from "@/lib/email-composer-utils";
 import { appLifecycleHooks, uiHooks, routerHooks, toastHooks, emailHooks } from "@/lib/plugin-hooks";
 import { emailToReadView } from "@/lib/plugin-projection";
 import { buildQuoteHeader } from "@/lib/quote-header";
-import { buildReplySubject, buildForwardSubject } from "@/lib/subject-prefix";
 import { useLocaleStore } from "@/stores/locale-store";
 import type { QuoteHeader } from "@/lib/plugin-types";
 
@@ -82,7 +81,6 @@ const SCHEDULED_MAILBOX_ID = '__scheduled__';
 export default function Home() {
   const t = useTranslations();
   const tCommon = useTranslations('common');
-  const tQuote = useTranslations('quote_header');
   const { appName } = useConfig();
   const mailLayout = useSettingsStore((state) => state.mailLayout);
   const [showComposer, setShowComposer] = useState(false);
@@ -301,7 +299,6 @@ export default function Home() {
     fetchTagCounts,
     fetchEmailContent,
     isUnifiedView,
-    unifiedRole,
     scheduledEmails,
     scheduledTotal,
     scheduledHasMore,
@@ -611,7 +608,6 @@ export default function Home() {
       }
     },
     onCompose: () => {
-      startFreshComposerSession();
       setComposerMode('compose');
       setShowComposer(true);
       if (isMobile) setActiveView('viewer');
@@ -754,9 +750,9 @@ export default function Home() {
     let title = t('email_composer.new_message');
     if (baseSubject) {
       if (effectiveMode === 'reply' || effectiveMode === 'replyAll') {
-        title = buildReplySubject(baseSubject, t('email_composer.prefix.reply'));
+        title = baseSubject.startsWith('Re:') ? baseSubject : `Re: ${baseSubject}`;
       } else if (effectiveMode === 'forward') {
-        title = buildForwardSubject(baseSubject, t('email_composer.prefix.forward'));
+        title = baseSubject.startsWith('Fwd:') ? baseSubject : `Fwd: ${baseSubject}`;
       } else {
         title = baseSubject;
       }
@@ -1132,7 +1128,6 @@ export default function Home() {
     inReplyTo?: string[];
     references?: string[];
     delayedUntil?: string;
-    requestReadReceipt?: boolean;
   }) => {
     if (!client) return;
 
@@ -1140,7 +1135,7 @@ export default function Home() {
       const effectiveMode = pendingDraft?.mode ?? composerMode;
       const originalEmailId = selectedEmail?.id;
 
-      const result = await sendEmail(client, data.to, data.subject, data.body, data.cc, data.bcc, data.identityId, data.fromEmail, data.draftId, data.fromName, data.htmlBody, data.attachments, data.inReplyTo, data.references, data.delayedUntil, data.envelopeMailFrom, { requestReadReceipt: data.requestReadReceipt });
+      const result = await sendEmail(client, data.to, data.subject, data.body, data.cc, data.bcc, data.identityId, data.fromEmail, data.draftId, data.fromName, data.htmlBody, data.attachments, data.inReplyTo, data.references, data.delayedUntil, data.envelopeMailFrom);
       setShowComposer(false);
       if (result.scheduled) {
         await refreshScheduledMetadata(client);
@@ -1216,29 +1211,13 @@ export default function Home() {
         locale: useLocaleStore.getState().locale,
         timeFormat: useSettingsStore.getState().timeFormat,
         unknownLabel: tCommon('unknown'),
-        labels: {
-          formatReplyLine: (vars) => tQuote('reply_line', vars),
-          forwardedSeparator: tQuote('forwarded_separator'),
-          fromLabel: tQuote('from_label'),
-          dateLabel: tQuote('date_label'),
-          subjectLabel: tQuote('subject_label'),
-        },
       });
       setComposerQuoteHeader(header);
     } catch (err) {
       console.warn('[quote-header] plugin transform failed; using default', err);
       setComposerQuoteHeader(null);
     }
-  }, [tCommon, tQuote]);
-
-  // Force a clean composer remount on every fresh entry point so prior
-  // compose state can't bleed into the new session (#329 C). The composer is
-  // keyed on composerSessionId, and pendingDraft would otherwise pin the
-  // composer to a stale draft from a discarded reply.
-  const startFreshComposerSession = useCallback(() => {
-    setComposerSessionId(id => id + 1);
-    setPendingDraft(null);
-  }, []);
+  }, [tCommon]);
 
   const handleReply = async (draftText?: string) => {
     if (selectedEmail) {
@@ -1252,7 +1231,6 @@ export default function Home() {
     } else {
       setComposerQuoteHeader(null);
     }
-    startFreshComposerSession();
     setComposerDraftText(draftText || "");
     setComposerMode('reply');
     setShowComposer(true);
@@ -1362,7 +1340,6 @@ export default function Home() {
     } else {
       setComposerQuoteHeader(null);
     }
-    startFreshComposerSession();
     setComposerMode('replyAll');
     setShowComposer(true);
     if (isMobile) setActiveView('viewer');
@@ -1380,7 +1357,6 @@ export default function Home() {
     } else {
       setComposerQuoteHeader(null);
     }
-    startFreshComposerSession();
     setComposerMode('forward');
     setShowComposer(true);
     if (isMobile) setActiveView('viewer');
@@ -1389,19 +1365,8 @@ export default function Home() {
   const handleDelete = async (emailToDelete: Email | null = selectedEmail) => {
     if (!client || !emailToDelete) return;
 
-    // In unified view the trash destination and current-folder check must come
-    // from the email's own account, not the active one. (#281)
-    const actionMailboxes =
-      isUnifiedView && emailToDelete.accountId
-        ? (accountMailboxes[emailToDelete.accountId] ?? mailboxes)
-        : mailboxes;
-
-    // Check if we're currently in the trash or junk folder. In unified view the
-    // "current folder" is the unified role within the email's account.
-    const currentMailbox = isUnifiedView
-      ? (actionMailboxes.find(m => m.role === unifiedRole && emailToDelete.mailboxIds?.[m.id])
-          ?? actionMailboxes.find(m => m.role === unifiedRole))
-      : mailboxes.find(m => m.id === selectedMailbox);
+    // Check if we're currently in the trash or junk folder
+    const currentMailbox = mailboxes.find(m => m.id === selectedMailbox);
     const isInTrash = currentMailbox?.role === 'trash';
     const isInJunk = currentMailbox?.role === 'junk';
     const permanentlyDeleteJunk = useSettingsStore.getState().permanentlyDeleteJunk;
@@ -1422,10 +1387,10 @@ export default function Home() {
         console.error("Failed to permanently delete email:", error);
       }
     } else {
-      // Not in trash: always move to trash (in the email's own account).
+      // Not in trash: always move to trash
       const trashMailbox =
-        actionMailboxes.find(m => m.role === 'trash' && !m.isShared) ??
-        actionMailboxes.find(m => {
+        mailboxes.find(m => m.role === 'trash' && !m.isShared) ??
+        mailboxes.find(m => {
           if (m.isShared) return false;
           const lower = m.name.toLowerCase();
           return lower.includes('trash') || lower.includes('deleted');
@@ -1448,27 +1413,9 @@ export default function Home() {
   const handleArchive = async (emailToArchive: Email | null = selectedEmail) => {
     if (!client || !emailToArchive) return;
 
-    // In unified view the archive folder (and any year/month subfolders we
-    // create) must live in the email's own account, reached through that
-    // account's client. (#281)
-    const archiveAccountId = isUnifiedView ? emailToArchive.accountId : undefined;
-    const archiveClient = archiveAccountId
-      ? (useAuthStore.getState().getClientForAccount(archiveAccountId) ?? client)
-      : client;
     // Read fresh mailboxes from the store – batch archive calls this in a loop,
     // and each iteration needs to see folders created by prior iterations.
-    const readMailboxes = () => {
-      const s = useEmailStore.getState();
-      return archiveAccountId
-        ? (s.accountMailboxes[archiveAccountId] ?? s.mailboxes)
-        : s.mailboxes;
-    };
-    const refreshMailboxes = () =>
-      archiveAccountId
-        ? useEmailStore.getState().fetchAccountMailboxes(archiveClient, archiveAccountId)
-        : fetchMailboxes(client);
-
-    const currentMailboxes = readMailboxes();
+    const currentMailboxes = useEmailStore.getState().mailboxes;
 
     const archiveMailbox = currentMailboxes.find(m => m.role === "archive" || m.name.toLowerCase() === "archive");
     if (!archiveMailbox) return;
@@ -1488,21 +1435,21 @@ export default function Home() {
           m => m.name === year && m.parentId === archiveId
         );
         if (!yearMailbox) {
-          yearMailbox = await archiveClient.createMailbox(year, archiveId);
-          await refreshMailboxes();
+          yearMailbox = await client.createMailbox(year, archiveId);
+          await fetchMailboxes(client);
         }
 
         if (archiveMode === 'year') {
           await moveThreadToMailbox(client, emailToArchive.id, yearMailbox.id);
         } else {
           const yearId = yearMailbox.originalId || yearMailbox.id;
-          const afterYear = readMailboxes();
+          const afterYear = useEmailStore.getState().mailboxes;
           let monthMailbox = afterYear.find(
             m => m.name === month && m.parentId === yearId
           );
           if (!monthMailbox) {
-            monthMailbox = await archiveClient.createMailbox(month, yearId);
-            await refreshMailboxes();
+            monthMailbox = await client.createMailbox(month, yearId);
+            await fetchMailboxes(client);
           }
           await moveThreadToMailbox(client, emailToArchive.id, monthMailbox.id);
         }
@@ -1513,7 +1460,7 @@ export default function Home() {
         setConversationEmails([]);
       }
 
-      void refreshMailboxes();
+      void fetchMailboxes(client);
     } catch (error) {
       console.error("Failed to archive email:", error);
     }
@@ -2130,21 +2077,9 @@ export default function Home() {
 
     // Append signature from the sending identity (fall back to primary
     // when the reply-from lives on the same identity but a different alias).
-    const separator = useSettingsStore.getState().signatureSeparatorEnabled;
-    const finalBody = appendPlainTextSignature(body, sendingIdentity, { separator });
-
-    // When the identity has an HTML signature, send a matching HTML body so the
-    // signature keeps its formatting; appendPlainTextSignature would otherwise
-    // flatten it to plain text. Text-only identities keep the plain-text-only
-    // behavior (htmlBody stays undefined).
-    const escapedBody = body
-      .replace(/&/g, '&')
-      .replace(/</g, '&lt;')
-      .replace(/>/g, '&gt;')
-      .replace(/\n/g, '<br>');
-    const finalHtmlBody = sendingIdentity?.htmlSignature?.trim()
-      ? appendHtmlSignature(`<div>${escapedBody}</div>`, sendingIdentity, { separator })
-      : undefined;
+    const finalBody = appendPlainTextSignature(body, sendingIdentity, {
+      separator: useSettingsStore.getState().signatureSeparatorEnabled,
+    });
 
     const originalEmailId = selectedEmail.id;
     const sendDelaySeconds = useSettingsStore.getState().sendDelaySeconds;
@@ -2168,7 +2103,7 @@ export default function Home() {
     const result = await sendEmail(
       client,
       [sender.email],
-      buildReplySubject(selectedEmail.subject || "(no subject)", t('email_composer.prefix.reply')),
+      `Re: ${selectedEmail.subject || "(no subject)"}`,
       finalBody,
       undefined,
       undefined,
@@ -2176,7 +2111,7 @@ export default function Home() {
       headerFromEmail,
       undefined,
       headerFromName,
-      finalHtmlBody,
+      undefined,
       undefined,
       threading?.inReplyTo,
       threading?.references,
@@ -2343,7 +2278,6 @@ export default function Home() {
   const handleConversationReply = async (email: Email) => {
     selectEmail(email);
     await prepareComposerQuoteHeader(email, 'reply');
-    startFreshComposerSession();
     setComposerMode('reply');
     setShowComposer(true);
     if (isMobile) setActiveView('viewer');
@@ -2352,7 +2286,6 @@ export default function Home() {
   const handleConversationReplyAll = async (email: Email) => {
     selectEmail(email);
     await prepareComposerQuoteHeader(email, 'replyAll');
-    startFreshComposerSession();
     setComposerMode('replyAll');
     setShowComposer(true);
     if (isMobile) setActiveView('viewer');
@@ -2361,7 +2294,6 @@ export default function Home() {
   const handleConversationForward = async (email: Email) => {
     selectEmail(email);
     await prepareComposerQuoteHeader(email, 'forward');
-    startFreshComposerSession();
     setComposerMode('forward');
     setShowComposer(true);
     if (isMobile) setActiveView('viewer');
@@ -2466,7 +2398,7 @@ export default function Home() {
                 ),
             inlineApp && "hidden"
           )}
-          style={!isMobile && !isTablet ? { width: sidebarCollapsed ? 48 : sidebarWidth } : undefined}
+          style={!isMobile && !isTablet ? { width: sidebarCollapsed ? 64 : sidebarWidth } : undefined}
         >
           <ErrorBoundary fallback={SidebarErrorFallback}>
             <Sidebar
@@ -2489,7 +2421,6 @@ export default function Home() {
               onImportEmail={handleImportEmailFromContextMenu}
               onRefreshMailboxes={handleRefreshMailboxes}
               onCompose={() => {
-                startFreshComposerSession();
                 setComposerMode('compose');
                 setShowComposer(true);
                 if (isMobile) {
@@ -2550,8 +2481,8 @@ export default function Home() {
 
             {/* Search Bar + Inline Advanced Filters */}
             <div className="border-b border-border bg-background">
-              <div className="px-3 h-14 flex items-center">
-                <div className="flex items-center gap-1.5 w-full">
+              <div className="px-3 py-3">
+                <div className="flex items-center gap-1.5">
                   {/* Select / Select All toggle */}
                   <button
                     type="button"
@@ -2874,7 +2805,6 @@ export default function Home() {
             {/* Floating Compose Button */}
             <Button
               onClick={() => {
-                startFreshComposerSession();
                 setComposerMode('compose');
                 setShowComposer(true);
                 if (isMobile) setActiveView('viewer');
@@ -3093,7 +3023,6 @@ export default function Home() {
                       }
                     }}
                     onCompose={() => {
-                      startFreshComposerSession();
                       setComposerMode('compose');
                       setShowComposer(true);
                     }}

app/(main)/[locale]/settings/page.tsx

@@ -33,7 +33,6 @@ import {
   Languages,
   Info,
   Bug,
-  SwatchBook,
   Download,
   X,
   type LucideIcon,
@@ -146,7 +145,7 @@ const tabIcons: Record<Tab, LucideIcon> = {
   protocol_handlers: LinkIcon,
   sidebar_apps: PanelLeftClose,
   about_data: Info,
-  themes: SwatchBook,
+  themes: Palette,
   plugins: Puzzle,
   debug: Bug,
 };
@@ -336,14 +335,6 @@ const LEGACY_TAB_MAP: Record<string, Tab> = {
 
 function readPersistedTab(): Tab {
   try {
-    // One-shot deep link from the sidebar section gears (Folders / Tags).
-    // Used only as the initial tab and intentionally NOT written to
-    // 'settings-active-tab', so a gear click never becomes the persisted
-    // default that the regular Settings button lands on. Cleared on mount.
-    const deepLink = sessionStorage.getItem('settings-deep-link-tab');
-    if (deepLink) {
-      return (deepLink in LEGACY_TAB_MAP ? LEGACY_TAB_MAP[deepLink] : deepLink) as Tab;
-    }
     const saved = localStorage.getItem('settings-active-tab');
     if (!saved) return 'appearance';
     if (saved in LEGACY_TAB_MAP) {
@@ -369,11 +360,6 @@ export default function SettingsPage() {
   const { stalwartFeaturesEnabled } = useConfig();
   const { isFeatureEnabled } = usePolicyStore();
   const [activeTab, setActiveTab] = useState<Tab>(readPersistedTab);
-  // Consume the one-shot deep-link key so a section gear only steers this one
-  // open, never the persisted default for future Settings-button clicks.
-  useEffect(() => {
-    try { sessionStorage.removeItem('settings-deep-link-tab'); } catch { /* ignore */ }
-  }, []);
   const [mobileShowContent, setMobileShowContent] = useState(false);
   const [searchQuery, setSearchQuery] = useState('');
   const [pendingHighlight, setPendingHighlight] = useState<{ tab: Tab; label: string; pluginId?: string } | null>(null);
@@ -596,7 +582,6 @@ export default function SettingsPage() {
     // Appearance
     { id: 'appearance', label: t('tabs.appearance'), icon: tabIcons.appearance, group: 'appearance' },
     { id: 'layout', label: t('tabs.layout'), icon: tabIcons.layout, group: 'appearance' },
-    ...(isFeatureEnabled('themesEnabled') ? [{ id: 'themes' as Tab, label: 'Themes', icon: tabIcons.themes, group: 'appearance' as TabGroup }] : []),
 
     // Mail
     { id: 'reading', label: t('tabs.reading'), icon: tabIcons.reading, group: 'mail' },
@@ -622,6 +607,7 @@ export default function SettingsPage() {
 
     // Advanced
     { id: 'about_data', label: t('tabs.about_data'), icon: tabIcons.about_data, group: 'advanced' },
+    ...(isFeatureEnabled('themesEnabled') ? [{ id: 'themes' as Tab, label: 'Themes', icon: tabIcons.themes, group: 'advanced' as TabGroup }] : []),
     ...(isFeatureEnabled('pluginsEnabled') ? [{ id: 'plugins' as Tab, label: 'Plugins', icon: tabIcons.plugins, group: 'advanced' as TabGroup }] : []),
     ...(isFeatureEnabled('debugModeEnabled') ? [{ id: 'debug' as Tab, label: t('tabs.debug'), icon: tabIcons.debug, group: 'advanced' as TabGroup }] : []),
   ];
@@ -947,7 +933,7 @@ export default function SettingsPage() {
                   return (
                     <div key={tab.id}>
                       <button
-                        onClick={() => handleTabSelect(tab.id)}
+                        onClick={() => setActiveTab(tab.id)}
                         className={cn(
                           'w-full text-left px-3 py-2 rounded-md text-sm transition-colors duration-150 flex items-center gap-2.5',
                           effectiveActiveTab === tab.id

app/(main)/admin/_tabs/branding.tsx

@@ -1,14 +1,8 @@
 'use client';
 
-import { useEffect, useMemo, useRef, useState } from 'react';
-import { Save, Loader2, RotateCcw, ImageIcon, Upload, Trash2, Globe, Plus, X } from 'lucide-react';
-import { apiFetch, withBasePath } from '@/lib/browser-navigation';
-import {
-  BRANDING_OVERRIDE_KEYS,
-  parseDomainBranding,
-  type BrandingOverrideKey,
-  type DomainBrandingEntry,
-} from '@/lib/admin/domain-branding';
+import { useEffect, useRef, useState } from 'react';
+import { Save, Loader2, RotateCcw, ImageIcon, Upload, Trash2 } from 'lucide-react';
+import { apiFetch } from '@/lib/browser-navigation';
 
 interface ConfigEntry {
   value?: unknown;
@@ -22,67 +16,42 @@ const IMAGE_FIELDS = [
   { key: 'appLogoDarkUrl', label: 'App Logo (Dark Mode)', accept: '.svg,.png,.jpg,.webp' },
   { key: 'loginLogoLightUrl', label: 'Login Logo (Light Mode)', accept: '.svg,.png,.jpg,.webp' },
   { key: 'loginLogoDarkUrl', label: 'Login Logo (Dark Mode)', accept: '.svg,.png,.jpg,.webp' },
-] as const;
+];
 
 const TEXT_FIELDS = [
   { key: 'loginCompanyName', label: 'Company Name' },
   { key: 'loginImprintUrl', label: 'Imprint URL' },
   { key: 'loginPrivacyPolicyUrl', label: 'Privacy Policy URL' },
   { key: 'loginWebsiteUrl', label: 'Company Website URL' },
-] as const;
+];
 
 const PWA_IMAGE_FIELDS = [
   { key: 'pwaIconUrl', label: 'PWA Icon', accept: '.svg,.png,.jpg,.webp' },
-  { key: 'pwaScreenshotMobileUrl', label: 'PWA Screenshot (Mobile)', accept: '.png,.jpg,.webp' },
-  { key: 'pwaScreenshotDesktopUrl', label: 'PWA Screenshot (Desktop)', accept: '.png,.jpg,.webp' },
-] as const;
+];
 
 const PWA_TEXT_FIELDS = [
   { key: 'appShortName', label: 'Short Name', placeholder: 'Shown on home screen (max ~12 chars)' },
   { key: 'appDescription', label: 'Description', placeholder: 'App description for install prompts' },
-] as const;
+];
 
 const PWA_COLOR_FIELDS = [
   { key: 'pwaThemeColor', label: 'Theme Color', defaultValue: '#ffffff' },
   { key: 'pwaBackgroundColor', label: 'Background Color', defaultValue: '#ffffff' },
-] as const;
-
-// Accepts exact hosts and one-level wildcards (e.g. *.example.com).
-const HOST_RE = /^(\*\.)?[a-z0-9]([a-z0-9-]*[a-z0-9])?(\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$/;
-// Tighter rule for uploads: wildcards can only point to externally-hosted
-// URLs, since we'd have no concrete subdomain to serve a file from.
-const EXACT_HOST_RE = /^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$/;
+];
 
 export function BrandingTab() {
   const [config, setConfig] = useState<Record<string, ConfigEntry>>({});
-  const [edits, setEdits] = useState<Record<string, string>>({});
+  const [edits, setEdits] = useState<Record<string, unknown>>({});
   const [loading, setLoading] = useState(true);
   const [saving, setSaving] = useState(false);
   const [uploading, setUploading] = useState<string | null>(null);
   const [message, setMessage] = useState<{ type: 'success' | 'error'; text: string } | null>(null);
-  const [selectedHost, setSelectedHost] = useState<string | null>(null);
-  const [addingHost, setAddingHost] = useState(false);
-  const [newHostInput, setNewHostInput] = useState('');
-  const [newHostError, setNewHostError] = useState<string | null>(null);
   const fileInputRefs = useRef<Record<string, HTMLInputElement | null>>({});
 
   useEffect(() => {
     fetchConfig();
   }, []);
 
-  const domainEntries = useMemo<DomainBrandingEntry[]>(
-    () => parseDomainBranding(config['domainBranding']?.value),
-    [config],
-  );
-
-  // Drop selection if the host disappeared from the config (e.g. concurrent edit).
-  useEffect(() => {
-    if (selectedHost && !domainEntries.some(e => e.host === selectedHost)) {
-      setSelectedHost(null);
-      setEdits({});
-    }
-  }, [domainEntries, selectedHost]);
-
   async function fetchConfig() {
     setLoading(true);
     const res = await apiFetch('/api/admin/config');
@@ -90,81 +59,29 @@ export function BrandingTab() {
     setLoading(false);
   }
 
-  function selectedEntry(): DomainBrandingEntry | null {
-    if (!selectedHost) return null;
-    return domainEntries.find(e => e.host === selectedHost) ?? null;
-  }
-
   function handleChange(key: string, value: string) {
     setEdits(prev => ({ ...prev, [key]: value }));
     setMessage(null);
   }
 
   function currentValue(key: string): string {
-    if (key in edits) return edits[key];
-    if (selectedHost) {
-      const entry = selectedEntry();
-      return (entry?.[key as BrandingOverrideKey] as string | undefined) ?? '';
-    }
+    if (key in edits) return edits[key] as string;
     return (config[key]?.value as string) ?? '';
   }
 
-  function isOverriddenInScope(key: string): boolean {
-    if (selectedHost) {
-      const entry = selectedEntry();
-      const v = entry?.[key as BrandingOverrideKey];
-      return typeof v === 'string' && v.length > 0;
-    }
-    return config[key]?.source === 'admin';
-  }
-
-  const isUploadedFile = (key: string): boolean => {
-    const val = currentValue(key);
-    return val.startsWith('/api/admin/branding/');
-  };
-
-  function buildUpdatedDomainBranding(merge: Record<string, string>): DomainBrandingEntry[] {
-    if (!selectedHost) return domainEntries;
-    const next = domainEntries.slice();
-    const idx = next.findIndex(e => e.host === selectedHost);
-    const base: DomainBrandingEntry =
-      idx === -1 ? { host: selectedHost } : { ...next[idx] };
-    const writable = base as unknown as Record<string, string | undefined>;
-    for (const [key, value] of Object.entries(merge)) {
-      if (!(BRANDING_OVERRIDE_KEYS as readonly string[]).includes(key)) continue;
-      if (typeof value === 'string' && value.length > 0) {
-        writable[key] = value;
-      } else {
-        delete writable[key];
-      }
-    }
-    if (idx === -1) next.push(base);
-    else next[idx] = base;
-    return next;
-  }
-
   async function handleSave() {
     if (Object.keys(edits).length === 0) return;
     setSaving(true);
     setMessage(null);
 
-    const payload = selectedHost
-      ? { domainBranding: buildUpdatedDomainBranding(edits) }
-      : edits;
-
     const res = await apiFetch('/api/admin/config', {
       method: 'PATCH',
       headers: { 'Content-Type': 'application/json' },
-      body: JSON.stringify(payload),
+      body: JSON.stringify(edits),
     });
 
     if (res.ok) {
-      setMessage({
-        type: 'success',
-        text: selectedHost
-          ? `Branding for ${selectedHost} updated. Changes visible on next page load.`
-          : 'Branding updated. Changes visible on next page load.',
-      });
+      setMessage({ type: 'success', text: 'Branding updated. Changes visible on next page load.' });
       setEdits({});
       await fetchConfig();
     } else {
@@ -175,20 +92,12 @@ export function BrandingTab() {
   }
 
   async function handleUpload(slot: string, file: File) {
-    if (selectedHost && !EXACT_HOST_RE.test(selectedHost)) {
-      setMessage({
-        type: 'error',
-        text: 'Wildcard hosts cannot upload files. Enter a URL instead.',
-      });
-      return;
-    }
     setUploading(slot);
     setMessage(null);
 
     const formData = new FormData();
     formData.append('file', file);
     formData.append('slot', slot);
-    if (selectedHost) formData.append('host', selectedHost);
 
     const res = await apiFetch('/api/admin/branding', {
       method: 'POST',
@@ -203,9 +112,10 @@ export function BrandingTab() {
         delete next[slot];
         return next;
       });
-      // Refresh from server so domainBranding entries reflect the upload.
-      await fetchConfig();
-      void data;
+      setConfig(prev => ({
+        ...prev,
+        [slot]: { value: data.url, source: 'admin' },
+      }));
     } else {
       const data = await res.json();
       setMessage({ type: 'error', text: data.error || 'Upload failed' });
@@ -216,13 +126,10 @@ export function BrandingTab() {
   async function handleDeleteUpload(slot: string) {
     setMessage(null);
 
-    const body: { slot: string; host?: string } = { slot };
-    if (selectedHost) body.host = selectedHost;
-
     const res = await apiFetch('/api/admin/branding', {
       method: 'DELETE',
       headers: { 'Content-Type': 'application/json' },
-      body: JSON.stringify(body),
+      body: JSON.stringify({ slot }),
     });
 
     if (res.ok) {
@@ -240,25 +147,6 @@ export function BrandingTab() {
   }
 
   async function handleRevert(key: string) {
-    if (selectedHost) {
-      // Domain scope: drop the field from the entry and PATCH the array.
-      const updated = buildUpdatedDomainBranding({ [key]: '' });
-      const res = await apiFetch('/api/admin/config', {
-        method: 'PATCH',
-        headers: { 'Content-Type': 'application/json' },
-        body: JSON.stringify({ domainBranding: updated }),
-      });
-      if (res.ok) {
-        setEdits(prev => {
-          const next = { ...prev };
-          delete next[key];
-          return next;
-        });
-        await fetchConfig();
-      }
-      return;
-    }
-    // Default scope: revert via DELETE /api/admin/config
     const res = await apiFetch('/api/admin/config', {
       method: 'DELETE',
       headers: { 'Content-Type': 'application/json' },
@@ -274,71 +162,12 @@ export function BrandingTab() {
     }
   }
 
-  async function handleAddDomain() {
-    const host = newHostInput.trim().toLowerCase().replace(/\.+$/, '');
-    if (!host) {
-      setNewHostError('Enter a hostname');
-      return;
-    }
-    if (!HOST_RE.test(host)) {
-      setNewHostError('Invalid hostname. Use foo.example.com or *.example.com');
-      return;
-    }
-    if (domainEntries.some(e => e.host === host)) {
-      setNewHostError('A branding entry for this host already exists');
-      return;
-    }
-    setNewHostError(null);
-
-    const next: DomainBrandingEntry[] = [...domainEntries, { host }];
-    const res = await apiFetch('/api/admin/config', {
-      method: 'PATCH',
-      headers: { 'Content-Type': 'application/json' },
-      body: JSON.stringify({ domainBranding: next }),
-    });
-    if (res.ok) {
-      setNewHostInput('');
-      setAddingHost(false);
-      setSelectedHost(host);
-      setEdits({});
-      await fetchConfig();
-    } else {
-      const data = await res.json();
-      setNewHostError(data.error || 'Failed to add domain');
-    }
-  }
-
-  async function handleDeleteDomain() {
-    if (!selectedHost) return;
-    if (!confirm(`Remove branding entry for ${selectedHost}? Uploaded files for this domain will be left behind on disk.`)) {
-      return;
-    }
-    const next = domainEntries.filter(e => e.host !== selectedHost);
-    const res = await apiFetch('/api/admin/config', {
-      method: 'PATCH',
-      headers: { 'Content-Type': 'application/json' },
-      body: JSON.stringify({ domainBranding: next }),
-    });
-    if (res.ok) {
-      setSelectedHost(null);
-      setEdits({});
-      await fetchConfig();
-      setMessage({ type: 'success', text: `Removed branding entry for ${selectedHost}.` });
-    } else {
-      const data = await res.json();
-      setMessage({ type: 'error', text: data.error || 'Failed to remove domain' });
-    }
-  }
-
-  function handleScopeChange(host: string | null) {
-    if (Object.keys(edits).length > 0 && !confirm('Discard unsaved changes?')) return;
-    setSelectedHost(host);
-    setEdits({});
-    setMessage(null);
-  }
+  const isUploadedFile = (key: string): boolean => {
+    const val = currentValue(key);
+    return val.startsWith('/api/admin/branding/');
+  };
 
   const hasEdits = Object.keys(edits).length > 0;
-  const wildcardScope = !!selectedHost && !EXACT_HOST_RE.test(selectedHost);
 
   if (loading) {
     return <div className="flex items-center justify-center py-12 text-muted-foreground text-sm">Loading...</div>;
@@ -363,102 +192,6 @@ export function BrandingTab() {
         )}
       </div>
 
-      {/* Scope picker */}
-      <div className="border border-border rounded-lg">
-        <div className="px-4 py-3 border-b border-border bg-muted/30 flex items-center gap-2">
-          <Globe className="w-4 h-4 text-muted-foreground" />
-          <h2 className="text-sm font-medium text-foreground">Scope</h2>
-        </div>
-        <div className="px-4 py-3 space-y-3">
-          <div className="flex flex-wrap gap-2">
-            <button
-              type="button"
-              onClick={() => handleScopeChange(null)}
-              className={`h-8 px-3 rounded-md text-sm font-medium transition-colors ${
-                selectedHost === null
-                  ? 'bg-primary text-primary-foreground'
-                  : 'bg-muted text-foreground hover:bg-muted/70'
-              }`}
-            >
-              Default
-            </button>
-            {domainEntries.map(entry => (
-              <button
-                key={entry.host}
-                type="button"
-                onClick={() => handleScopeChange(entry.host)}
-                className={`h-8 px-3 rounded-md text-sm font-medium transition-colors ${
-                  selectedHost === entry.host
-                    ? 'bg-primary text-primary-foreground'
-                    : 'bg-muted text-foreground hover:bg-muted/70'
-                }`}
-              >
-                {entry.host}
-              </button>
-            ))}
-            {!addingHost && (
-              <button
-                type="button"
-                onClick={() => { setAddingHost(true); setNewHostError(null); }}
-                className="inline-flex items-center gap-1 h-8 px-3 rounded-md border border-dashed border-input text-sm text-muted-foreground hover:bg-muted hover:text-foreground transition-colors"
-              >
-                <Plus className="w-3.5 h-3.5" />
-                Add domain
-              </button>
-            )}
-          </div>
-          {addingHost && (
-            <div className="flex flex-wrap items-center gap-2">
-              <input
-                type="text"
-                autoFocus
-                value={newHostInput}
-                onChange={(e) => { setNewHostInput(e.target.value); setNewHostError(null); }}
-                onKeyDown={(e) => { if (e.key === 'Enter') void handleAddDomain(); }}
-                placeholder="mail.example.com or *.example.com"
-                className="h-8 w-64 rounded-md border border-input bg-background px-2.5 text-sm text-foreground placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring"
-              />
-              <button
-                type="button"
-                onClick={handleAddDomain}
-                className="h-8 px-3 rounded-md bg-primary text-primary-foreground text-sm font-medium hover:bg-primary/90 transition-colors"
-              >
-                Add
-              </button>
-              <button
-                type="button"
-                onClick={() => { setAddingHost(false); setNewHostInput(''); setNewHostError(null); }}
-                className="h-8 px-2.5 rounded-md text-sm text-muted-foreground hover:text-foreground transition-colors"
-              >
-                Cancel
-              </button>
-              {newHostError && <span className="text-xs text-destructive">{newHostError}</span>}
-            </div>
-          )}
-          {selectedHost ? (
-            <div className="flex items-center justify-between gap-3 text-xs">
-              <p className="text-muted-foreground">
-                Editing overrides for <span className="font-mono text-foreground">{selectedHost}</span>.
-                Unset fields fall back to the Default values.
-                {wildcardScope && ' Uploads are disabled for wildcard hosts; enter a URL instead.'}
-              </p>
-              <button
-                type="button"
-                onClick={handleDeleteDomain}
-                className="inline-flex items-center gap-1 text-destructive hover:underline whitespace-nowrap"
-              >
-                <X className="w-3.5 h-3.5" />
-                Remove domain
-              </button>
-            </div>
-          ) : (
-            <p className="text-xs text-muted-foreground">
-              Editing the Default branding. Add a domain to override branding when the webmail is served on a specific hostname.
-            </p>
-          )}
-        </div>
-      </div>
-
       {message && (
         <div className={`text-sm rounded-md px-3 py-2 ${message.type === 'success' ? 'bg-emerald-50 text-emerald-700 dark:bg-emerald-950/30 dark:text-emerald-300' : 'bg-destructive/10 text-destructive'}`}>
           {message.text}
@@ -476,9 +209,9 @@ export function BrandingTab() {
               <div className="flex flex-col gap-2 sm:flex-row sm:items-center sm:justify-between sm:gap-4">
                 <div className="flex items-center gap-2 min-w-0">
                   <label className="text-sm text-foreground">{field.label}</label>
-                  {isOverriddenInScope(field.key) && (
+                  {config[field.key]?.source === 'admin' && (
                     <span className="text-[10px] font-medium uppercase tracking-wider px-1.5 py-0.5 rounded bg-primary/10 text-primary">
-                      {isUploadedFile(field.key) ? 'uploaded' : selectedHost ? 'domain' : 'admin'}
+                      {isUploadedFile(field.key) ? 'uploaded' : 'admin'}
                     </span>
                   )}
                 </div>
@@ -487,7 +220,7 @@ export function BrandingTab() {
                     type="text"
                     value={currentValue(field.key)}
                     onChange={(e) => handleChange(field.key, e.target.value)}
-                    placeholder={selectedHost ? 'Enter URL (uploads only for default scope)' : 'Enter URL or upload a file'}
+                    placeholder="Enter URL or upload a file"
                     className="h-8 w-full sm:w-64 min-w-0 rounded-md border border-input bg-background px-2.5 text-sm text-foreground placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring"
                   />
                   <input
@@ -503,9 +236,9 @@ export function BrandingTab() {
                   />
                   <button
                     onClick={() => fileInputRefs.current[field.key]?.click()}
-                    disabled={uploading === field.key || wildcardScope}
+                    disabled={uploading === field.key}
                     className="inline-flex items-center gap-1.5 h-8 px-2.5 rounded-md border border-input bg-background text-sm text-foreground hover:bg-muted disabled:opacity-50 transition-colors"
-                    title={wildcardScope ? 'Uploads disabled for wildcard hosts' : 'Upload file'}
+                    title="Upload file"
                   >
                     {uploading === field.key ? <Loader2 className="w-3.5 h-3.5 animate-spin" /> : <Upload className="w-3.5 h-3.5" />}
                   </button>
@@ -518,7 +251,7 @@ export function BrandingTab() {
                       <Trash2 className="w-3.5 h-3.5" />
                     </button>
                   )}
-                  {isOverriddenInScope(field.key) && !isUploadedFile(field.key) && (
+                  {config[field.key]?.source === 'admin' && !isUploadedFile(field.key) && (
                     <button onClick={() => handleRevert(field.key)} className="text-muted-foreground hover:text-foreground" title="Revert to default">
                       <RotateCcw className="w-3.5 h-3.5" />
                     </button>
@@ -530,7 +263,7 @@ export function BrandingTab() {
                   <ImageIcon className="w-3.5 h-3.5 text-muted-foreground" />
                   <div className="h-8 w-auto bg-muted rounded flex items-center justify-center px-2">
                     <img
-                      src={withBasePath(currentValue(field.key))}
+                      src={currentValue(field.key)}
                       alt={field.label}
                       className="max-h-6 max-w-[200px] object-contain"
                       onError={(e) => { (e.target as HTMLImageElement).style.display = 'none'; }}
@@ -554,9 +287,9 @@ export function BrandingTab() {
               <div className="flex flex-col gap-2 sm:flex-row sm:items-center sm:justify-between sm:gap-4">
                 <div className="flex items-center gap-2 min-w-0">
                   <label className="text-sm text-foreground">{field.label}</label>
-                  {isOverriddenInScope(field.key) && (
+                  {config[field.key]?.source === 'admin' && (
                     <span className="text-[10px] font-medium uppercase tracking-wider px-1.5 py-0.5 rounded bg-primary/10 text-primary">
-                      {isUploadedFile(field.key) ? 'uploaded' : selectedHost ? 'domain' : 'admin'}
+                      {isUploadedFile(field.key) ? 'uploaded' : 'admin'}
                     </span>
                   )}
                 </div>
@@ -565,7 +298,7 @@ export function BrandingTab() {
                     type="text"
                     value={currentValue(field.key)}
                     onChange={(e) => handleChange(field.key, e.target.value)}
-                    placeholder={selectedHost ? 'Enter URL (uploads only for default scope)' : 'Enter URL or upload a file'}
+                    placeholder="Enter URL or upload a file"
                     className="h-8 w-full sm:w-64 min-w-0 rounded-md border border-input bg-background px-2.5 text-sm text-foreground placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring"
                   />
                   <input
@@ -581,9 +314,9 @@ export function BrandingTab() {
                   />
                   <button
                     onClick={() => fileInputRefs.current[field.key]?.click()}
-                    disabled={uploading === field.key || wildcardScope}
+                    disabled={uploading === field.key}
                     className="inline-flex items-center gap-1.5 h-8 px-2.5 rounded-md border border-input bg-background text-sm text-foreground hover:bg-muted disabled:opacity-50 transition-colors"
-                    title={wildcardScope ? 'Uploads disabled for wildcard hosts' : 'Upload file'}
+                    title="Upload file"
                   >
                     {uploading === field.key ? <Loader2 className="w-3.5 h-3.5 animate-spin" /> : <Upload className="w-3.5 h-3.5" />}
                   </button>
@@ -596,7 +329,7 @@ export function BrandingTab() {
                       <Trash2 className="w-3.5 h-3.5" />
                     </button>
                   )}
-                  {isOverriddenInScope(field.key) && !isUploadedFile(field.key) && (
+                  {config[field.key]?.source === 'admin' && !isUploadedFile(field.key) && (
                     <button onClick={() => handleRevert(field.key)} className="text-muted-foreground hover:text-foreground" title="Revert to default">
                       <RotateCcw className="w-3.5 h-3.5" />
                     </button>
@@ -608,7 +341,7 @@ export function BrandingTab() {
                   <ImageIcon className="w-3.5 h-3.5 text-muted-foreground" />
                   <div className="h-8 w-auto bg-muted rounded flex items-center justify-center px-2">
                     <img
-                      src={withBasePath(currentValue(field.key))}
+                      src={currentValue(field.key)}
                       alt={field.label}
                       className="max-h-6 max-w-[200px] object-contain"
                       onError={(e) => { (e.target as HTMLImageElement).style.display = 'none'; }}
@@ -622,10 +355,8 @@ export function BrandingTab() {
             <div key={field.key} className="px-4 py-3 flex flex-col gap-2 sm:flex-row sm:items-center sm:justify-between sm:gap-4">
               <div className="flex items-center gap-2 min-w-0">
                 <label className="text-sm text-foreground">{field.label}</label>
-                {isOverriddenInScope(field.key) && (
-                  <span className="text-[10px] font-medium uppercase tracking-wider px-1.5 py-0.5 rounded bg-primary/10 text-primary">
-                    {selectedHost ? 'domain' : 'admin'}
-                  </span>
+                {config[field.key]?.source === 'admin' && (
+                  <span className="text-[10px] font-medium uppercase tracking-wider px-1.5 py-0.5 rounded bg-primary/10 text-primary">admin</span>
                 )}
               </div>
               <div className="flex items-center gap-2 w-full sm:w-auto">
@@ -636,7 +367,7 @@ export function BrandingTab() {
                   placeholder={field.placeholder}
                   className="h-8 w-full sm:w-72 min-w-0 rounded-md border border-input bg-background px-2.5 text-sm text-foreground placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring"
                 />
-                {isOverriddenInScope(field.key) && (
+                {config[field.key]?.source === 'admin' && (
                   <button onClick={() => handleRevert(field.key)} className="text-muted-foreground hover:text-foreground" title="Revert to default">
                     <RotateCcw className="w-3.5 h-3.5" />
                   </button>
@@ -650,10 +381,8 @@ export function BrandingTab() {
               <div key={field.key} className="px-4 py-3 flex flex-col gap-2 sm:flex-row sm:items-center sm:justify-between sm:gap-4">
                 <div className="flex items-center gap-2 min-w-0">
                   <label className="text-sm text-foreground">{field.label}</label>
-                  {isOverriddenInScope(field.key) && (
-                    <span className="text-[10px] font-medium uppercase tracking-wider px-1.5 py-0.5 rounded bg-primary/10 text-primary">
-                      {selectedHost ? 'domain' : 'admin'}
-                    </span>
+                  {config[field.key]?.source === 'admin' && (
+                    <span className="text-[10px] font-medium uppercase tracking-wider px-1.5 py-0.5 rounded bg-primary/10 text-primary">admin</span>
                   )}
                 </div>
                 <div className="flex items-center gap-2 w-full sm:w-auto">
@@ -671,7 +400,7 @@ export function BrandingTab() {
                     placeholder={field.defaultValue}
                     className="h-8 w-full sm:w-32 min-w-0 rounded-md border border-input bg-background px-2.5 text-sm font-mono text-foreground placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring"
                   />
-                  {isOverriddenInScope(field.key) && (
+                  {config[field.key]?.source === 'admin' && (
                     <button onClick={() => handleRevert(field.key)} className="text-muted-foreground hover:text-foreground" title="Revert to default">
                       <RotateCcw className="w-3.5 h-3.5" />
                     </button>
@@ -692,10 +421,8 @@ export function BrandingTab() {
             <div key={field.key} className="px-4 py-3 flex flex-col gap-2 sm:flex-row sm:items-center sm:justify-between sm:gap-4">
               <div className="flex items-center gap-2 min-w-0">
                 <label className="text-sm text-foreground">{field.label}</label>
-                {isOverriddenInScope(field.key) && (
-                  <span className="text-[10px] font-medium uppercase tracking-wider px-1.5 py-0.5 rounded bg-primary/10 text-primary">
-                    {selectedHost ? 'domain' : 'admin'}
-                  </span>
+                {config[field.key]?.source === 'admin' && (
+                  <span className="text-[10px] font-medium uppercase tracking-wider px-1.5 py-0.5 rounded bg-primary/10 text-primary">admin</span>
                 )}
               </div>
               <div className="flex items-center gap-2 w-full sm:w-auto">
@@ -706,7 +433,7 @@ export function BrandingTab() {
                   placeholder={field.key.includes('Url') ? 'https://...' : 'Enter value'}
                   className="h-8 w-full sm:w-72 min-w-0 rounded-md border border-input bg-background px-2.5 text-sm text-foreground placeholder:text-muted-foreground focus-visible:outline-none focus-visible:ring-2 focus-visible:ring-ring"
                 />
-                {isOverriddenInScope(field.key) && (
+                {config[field.key]?.source === 'admin' && (
                   <button onClick={() => handleRevert(field.key)} className="text-muted-foreground hover:text-foreground" title="Revert to default">
                     <RotateCcw className="w-3.5 h-3.5" />
                   </button>

app/(main)/admin/_tabs/policy.tsx

@@ -74,18 +74,6 @@ export function PolicyTab() {
     setMessage(null);
   }
 
-  function setPushRelayUrl(value: string) {
-    setPolicy(prev => ({ ...prev, pushRelayUrl: value }));
-    setDirty(true);
-    setMessage(null);
-  }
-
-  function togglePushRelayLocked() {
-    setPolicy(prev => ({ ...prev, pushRelayUrlLocked: !prev.pushRelayUrlLocked }));
-    setDirty(true);
-    setMessage(null);
-  }
-
   function toggleLocked(settingKey: string) {
     setPolicy(prev => {
       const existing = prev.restrictions[settingKey] || {};
@@ -195,34 +183,6 @@ export function PolicyTab() {
         </div>
       </div>
 
-      <div className="border border-border rounded-lg">
-        <div className="px-4 py-3 border-b border-border bg-muted/30">
-          <h2 className="text-sm font-medium text-foreground">Push Relay</h2>
-          <p className="text-xs text-muted-foreground mt-0.5">Override the Web Push relay URL shown in user notification settings. Leave empty to use the built-in default.</p>
-        </div>
-        <div className="px-4 py-3 space-y-3">
-          <input
-            type="url"
-            inputMode="url"
-            autoComplete="off"
-            spellCheck={false}
-            value={policy.pushRelayUrl ?? ''}
-            onChange={(e) => setPushRelayUrl(e.target.value)}
-            placeholder="https://notifications.relay.example.com"
-            className="w-full rounded border border-input bg-background px-3 py-2 text-sm"
-          />
-          <label className="flex items-center gap-1.5 text-xs text-muted-foreground cursor-pointer">
-            <input
-              type="checkbox"
-              checked={!!policy.pushRelayUrlLocked}
-              onChange={togglePushRelayLocked}
-              className="rounded border-input"
-            />
-            <Lock className="w-3 h-3" /> Lock - users cannot change this URL
-          </label>
-        </div>
-      </div>
-
       {categories.map(category => (
         <div key={category} className="border border-border rounded-lg">
           <div className="px-4 py-3 border-b border-border bg-muted/30">

app/(main)/admin/_tabs/settings.tsx

@@ -125,7 +125,6 @@ export function SettingsTab() {
         )}
         <ToggleSetting label="Stalwart Features" description="Enable Stalwart Mail Server-specific features" configKey="stalwartFeaturesEnabled" value={currentValue('stalwartFeaturesEnabled') as boolean} source={config.stalwartFeaturesEnabled?.source} onChange={handleChange} onRevert={handleRevert} />
         <ToggleSetting label="Demo Mode" description="Enable demo mode with sample data" configKey="demoMode" value={currentValue('demoMode') as boolean} source={config.demoMode?.source} onChange={handleChange} onRevert={handleRevert} />
-        <ToggleSetting label="Search Engine Indexing" description="Allow search engines to index this webmail. Off (the default) sends noindex/nofollow in the page head, recommended for private deployments." configKey="searchEngineIndexing" value={currentValue('searchEngineIndexing') as boolean} source={config.searchEngineIndexing?.source} onChange={handleChange} onRevert={handleRevert} />
       </SettingsSection>
 
       <SettingsSection title="JMAP Servers (multi-server)">

app/(main)/layout.tsx

@@ -1,25 +1,13 @@
 import type { Metadata, Viewport } from "next";
 import { Geist, Geist_Mono } from "next/font/google";
 import { headers } from "next/headers";
-import { getLocale, getTranslations } from "next-intl/server";
+import { getLocale } from "next-intl/server";
+import { PWAInstallPrompt } from "@/components/pwa-install-prompt";
 import { ServiceWorkerRegistration } from "@/components/service-worker-registration";
 import { configManager } from "@/lib/admin/config-manager";
 import { withBasePath } from "@/lib/browser-navigation";
-import { locales } from "@/i18n/routing";
 import "../globals.css";
 
-// This layout renders <html> and sits ABOVE the [locale] segment, so
-// next-intl's getLocale() returns the default locale here - emitting
-// <html lang="en"> on e.g. /de pages, which makes browsers offer to
-// "translate this page". Recover the active locale from the request pathname
-// (exposed by proxy.ts as x-pathname), falling back to getLocale() (cookie /
-// Accept-Language) when the path carries no locale segment.
-async function resolveRequestLocale(): Promise<string> {
-  const pathname = (await headers()).get("x-pathname") || "";
-  const seg = pathname.split("/").find((s) => (locales as readonly string[]).includes(s));
-  return seg ?? (await getLocale());
-}
-
 const geistSans = Geist({
   variable: "--font-geist-sans",
   subsets: ["latin"],
@@ -39,21 +27,10 @@ export const viewport: Viewport = {
 export async function generateMetadata(): Promise<Metadata> {
   await configManager.ensureLoaded();
   const faviconUrl = configManager.get<string>("faviconUrl", "/branding/Bulwark_Favicon.svg");
-  // Localize the <head> description to match the UI language; a hardcoded
-  // English description is another signal that makes Chrome offer to
-  // "translate this page". Resolve the locale from the request path, since this
-  // layout is above the [locale] segment (see resolveRequestLocale).
-  const locale = await resolveRequestLocale();
-  const t = await getTranslations({ locale });
 
   return {
     title: process.env.APP_NAME || process.env.NEXT_PUBLIC_APP_NAME || "Webmail",
-    description: t("meta_description"),
-    // A private webmail should not be indexed by search engines. This is opt-in
-    // via Settings -> General; the default (false) emits noindex/nofollow.
-    robots: configManager.get<boolean>("searchEngineIndexing", false)
-      ? { index: true, follow: true }
-      : { index: false, follow: false },
+    description: "Minimalist webmail client using JMAP protocol",
     appleWebApp: {
       capable: true,
       statusBarStyle: "black-translucent",
@@ -71,7 +48,7 @@ export default async function RootLayout({
 }: {
   children: React.ReactNode;
 }) {
-  const locale = await resolveRequestLocale();
+  const locale = await getLocale();
   const nonce = (await headers()).get("x-nonce") ?? "";
   const parentOrigin = process.env.NEXT_PUBLIC_PARENT_ORIGIN || "";
 
@@ -115,6 +92,7 @@ export default async function RootLayout({
       >
         <ServiceWorkerRegistration />
         {children}
+        <PWAInstallPrompt />
       </body>
     </html>
   );

app/(sandbox)/layout.tsx

@@ -1,14 +1,17 @@
 import type { Metadata } from 'next';
 import type { ReactNode } from 'react';
+import { Geist, Geist_Mono } from 'next/font/google';
+import '../globals.css';
 
-// The plugin sandbox iframe runs with an opaque origin (the `sandbox`
-// attribute in production excludes `allow-same-origin` for isolation). Any
-// asset request from this layout - bundled fonts, globals.css, etc. - is then
-// cross-origin from the "null" origin to the host origin and gets blocked
-// (fonts in particular require CORS). So this layout is intentionally minimal:
-// no font imports, no CSS imports. Plugins ship their own styles, and both the
-// plugin bundle and all host API calls travel over the postMessage RPC bridge,
-// so the sandbox never fetches same-origin assets itself.
+const geistSans = Geist({
+  variable: '--font-geist-sans',
+  subsets: ['latin'],
+});
+
+const geistMono = Geist_Mono({
+  variable: '--font-geist-mono',
+  subsets: ['latin'],
+});
 
 export const metadata: Metadata = {
   title: 'Plugin sandbox',
@@ -18,7 +21,10 @@ export const metadata: Metadata = {
 export default function PluginSandboxLayout({ children }: { children: ReactNode }) {
   return (
     <html lang="en">
-      <body style={{ margin: 0, padding: 0, background: 'transparent' }}>
+      <body
+        className={`${geistSans.variable} ${geistMono.variable} antialiased`}
+        style={{ margin: 0, padding: 0, background: 'transparent' }}
+      >
         {children}
       </body>
     </html>

app/api/admin/branding/route.ts

@@ -3,13 +3,8 @@ import { requireAdminAuth, getClientIP } from '@/lib/admin/session';
 import { auditLog } from '@/lib/admin/audit';
 import { configManager } from '@/lib/admin/config-manager';
 import { getConfigDir } from '@/lib/admin/paths';
-import {
-  parseDomainBranding,
-  type DomainBrandingEntry,
-  type BrandingOverrideKey,
-} from '@/lib/admin/domain-branding';
 import { logger } from '@/lib/logger';
-import { writeFile, unlink, mkdir, readdir } from 'node:fs/promises';
+import { writeFile, unlink, mkdir } from 'node:fs/promises';
 import { existsSync } from 'node:fs';
 import path from 'node:path';
 
@@ -26,99 +21,27 @@ const ALLOWED_MIME_TYPES = new Set([
   'image/vnd.microsoft.icon',
 ]);
 
-type UploadSlot = BrandingOverrideKey;
-
 /** Slots that correspond to branding config keys */
-const VALID_SLOTS = new Set<UploadSlot>([
+const VALID_SLOTS = new Set([
   'faviconUrl',
   'pwaIconUrl',
   'appLogoLightUrl',
   'appLogoDarkUrl',
   'loginLogoLightUrl',
   'loginLogoDarkUrl',
-  'pwaScreenshotMobileUrl',
-  'pwaScreenshotDesktopUrl',
 ]);
 
-const EXT_BY_MIME: Record<string, string> = {
-  'image/svg+xml': '.svg',
-  'image/png': '.png',
-  'image/jpeg': '.jpg',
-  'image/webp': '.webp',
-  'image/x-icon': '.ico',
-  'image/vnd.microsoft.icon': '.ico',
-};
-
-const POSSIBLE_EXTS = ['.svg', '.png', '.jpg', '.jpeg', '.webp', '.ico'];
-
-// Exact hostnames only (no wildcards): wildcards can't be uploaded against
-// because we'd need a real subdomain to serve the file from.
-const EXACT_HOST_RE = /^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$/;
-
 function sanitizeFilename(name: string): string {
   // Strip directory traversal, keep only safe chars
   return path.basename(name).replace(/[^a-zA-Z0-9._-]/g, '_');
 }
 
-function normalizeHost(raw: string): string {
-  return raw.trim().toLowerCase().replace(/\.+$/, '');
-}
-
-/** Filename used to store a per-host uploaded asset. */
-function domainAssetName(host: string, slot: BrandingOverrideKey, ext: string): string {
-  return sanitizeFilename(`domain__${host}__${slot}${ext}`);
-}
-
-/** True if the file belongs to the given host+slot (any extension). */
-function isDomainAssetFor(filename: string, host: string, slot: BrandingOverrideKey): boolean {
-  const prefix = sanitizeFilename(`domain__${host}__${slot}.`);
-  return filename.startsWith(prefix);
-}
-
-/** Merge a per-host update into the existing domainBranding array. */
-function mergeDomainEntry(
-  current: DomainBrandingEntry[],
-  host: string,
-  patch: Partial<DomainBrandingEntry>,
-): DomainBrandingEntry[] {
-  const next = current.slice();
-  const idx = next.findIndex(e => e.host === host);
-  if (idx === -1) {
-    next.push({ host, ...patch });
-  } else {
-    next[idx] = { ...next[idx], ...patch };
-  }
-  return next;
-}
-
-/** Remove keys from a host's entry. If the entry has nothing left besides
- *  `host`, drop it entirely. */
-function clearDomainKeys(
-  current: DomainBrandingEntry[],
-  host: string,
-  keys: BrandingOverrideKey[],
-): DomainBrandingEntry[] {
-  const idx = current.findIndex(e => e.host === host);
-  if (idx === -1) return current;
-  const entry = { ...current[idx] };
-  for (const key of keys) delete (entry as Record<string, unknown>)[key];
-  const next = current.slice();
-  if (Object.keys(entry).filter(k => k !== 'host').length === 0) {
-    next.splice(idx, 1);
-  } else {
-    next[idx] = entry;
-  }
-  return next;
-}
-
 /**
  * POST /api/admin/branding - Upload a branding image file
  *
  * Expects multipart/form-data with:
  *   - file: the image file
  *   - slot: which branding field this is for (e.g. "faviconUrl")
- *   - host (optional): when set, the upload is stored against the
- *     per-domain entry for that hostname instead of the global default.
  */
 export async function POST(request: NextRequest) {
   try {
@@ -129,24 +52,15 @@ export async function POST(request: NextRequest) {
     const formData = await request.formData();
     const file = formData.get('file') as File | null;
     const slot = formData.get('slot') as string | null;
-    const rawHost = (formData.get('host') as string | null) ?? '';
 
     if (!file || !slot) {
       return NextResponse.json({ error: 'Missing file or slot' }, { status: 400 });
     }
 
-    if (!VALID_SLOTS.has(slot as UploadSlot)) {
+    if (!VALID_SLOTS.has(slot)) {
       return NextResponse.json({ error: `Invalid slot: ${slot}` }, { status: 400 });
     }
 
-    const host = rawHost ? normalizeHost(rawHost) : '';
-    if (host && !EXACT_HOST_RE.test(host)) {
-      return NextResponse.json(
-        { error: `Invalid host: ${rawHost} (wildcards must be configured by URL, not upload)` },
-        { status: 400 },
-      );
-    }
-
     if (file.size > MAX_FILE_SIZE) {
       return NextResponse.json({ error: 'File too large (max 2 MB)' }, { status: 400 });
     }
@@ -158,51 +72,34 @@ export async function POST(request: NextRequest) {
       );
     }
 
-    const ext = EXT_BY_MIME[file.type] ?? '.png';
-    const safeName = host
-      ? domainAssetName(host, slot as BrandingOverrideKey, ext)
-      : sanitizeFilename(`${slot}${ext}`);
+    // Determine extension from mime type
+    const extMap: Record<string, string> = {
+      'image/svg+xml': '.svg',
+      'image/png': '.png',
+      'image/jpeg': '.jpg',
+      'image/webp': '.webp',
+      'image/x-icon': '.ico',
+      'image/vnd.microsoft.icon': '.ico',
+    };
+    const ext = extMap[file.type] || '.png';
+    const safeName = sanitizeFilename(`${slot}${ext}`);
     const filePath = path.join(getBrandingDir(), safeName);
 
+    // Ensure branding directory exists
     if (!existsSync(getBrandingDir())) {
       await mkdir(getBrandingDir(), { recursive: true });
     }
 
-    // Strip any prior asset for the same slot but a different extension so
-    // the directory doesn't accumulate orphan files on re-upload.
-    const dir = getBrandingDir();
-    const allFiles = await readdir(dir).catch(() => [] as string[]);
-    for (const f of allFiles) {
-      if (f === safeName) continue;
-      const isSame = host
-        ? isDomainAssetFor(f, host, slot as BrandingOverrideKey)
-        : POSSIBLE_EXTS.some(e => f === `${slot}${e}`);
-      if (isSame) {
-        try { await unlink(path.join(dir, f)); } catch { /* ignore */ }
-      }
-    }
-
+    // Write file to disk
     const buffer = Buffer.from(await file.arrayBuffer());
     await writeFile(filePath, buffer);
 
+    // Update config to point to the served URL
     const servedUrl = `/api/admin/branding/${safeName}`;
     await configManager.ensureLoaded();
+    await configManager.setAdminConfig({ [slot]: servedUrl });
 
-    if (host) {
-      const current = parseDomainBranding(configManager.get<unknown>('domainBranding', []));
-      const next = mergeDomainEntry(current, host, { [slot]: servedUrl });
-      await configManager.setAdminConfig({ domainBranding: next });
-    } else {
-      await configManager.setAdminConfig({ [slot]: servedUrl });
-    }
-
-    await auditLog('branding_upload', {
-      slot,
-      host: host || undefined,
-      filename: safeName,
-      size: file.size,
-      mimeType: file.type,
-    }, ip);
+    await auditLog('branding_upload', { slot, filename: safeName, size: file.size, mimeType: file.type }, ip);
 
     return NextResponse.json({ url: servedUrl, filename: safeName });
   } catch (error) {
@@ -214,11 +111,7 @@ export async function POST(request: NextRequest) {
 /**
  * DELETE /api/admin/branding - Remove an uploaded branding file
  *
- * Expects JSON body: { slot: string, host?: string }
- *
- * When `host` is provided, only the per-domain asset for that host+slot is
- * removed (and the override in `domainBranding[host][slot]` is cleared).
- * Otherwise the global asset and config override are removed.
+ * Expects JSON body: { slot: string }
  */
 export async function DELETE(request: NextRequest) {
   try {
@@ -226,48 +119,28 @@ export async function DELETE(request: NextRequest) {
     if ('error' in result) return result.error;
 
     const ip = getClientIP(request);
-    const body = await request.json().catch(() => ({})) as { slot?: string; host?: string };
-    const slot = body.slot;
-    const rawHost = body.host ?? '';
+    const { slot } = await request.json();
 
-    if (!slot || !VALID_SLOTS.has(slot as UploadSlot)) {
+    if (!slot || !VALID_SLOTS.has(slot)) {
       return NextResponse.json({ error: 'Invalid or missing slot' }, { status: 400 });
     }
 
-    const host = rawHost ? normalizeHost(rawHost) : '';
-    if (host && !EXACT_HOST_RE.test(host)) {
-      return NextResponse.json({ error: `Invalid host: ${rawHost}` }, { status: 400 });
-    }
-
-    const dir = getBrandingDir();
+    // Find and remove matching files for this slot
+    const possibleExts = ['.svg', '.png', '.jpg', '.webp', '.ico'];
     let removed = false;
-    if (host) {
-      const allFiles = await readdir(dir).catch(() => [] as string[]);
-      for (const f of allFiles) {
-        if (isDomainAssetFor(f, host, slot as BrandingOverrideKey)) {
-          try { await unlink(path.join(dir, f)); removed = true; } catch { /* ignore */ }
-        }
-      }
-    } else {
-      for (const ext of POSSIBLE_EXTS) {
-        const filePath = path.join(dir, `${slot}${ext}`);
-        if (existsSync(filePath)) {
-          await unlink(filePath);
-          removed = true;
-        }
+    for (const ext of possibleExts) {
+      const filePath = path.join(getBrandingDir(), `${slot}${ext}`);
+      if (existsSync(filePath)) {
+        await unlink(filePath);
+        removed = true;
       }
     }
 
+    // Clear the config override so it falls back to default/env
     await configManager.ensureLoaded();
-    if (host) {
-      const current = parseDomainBranding(configManager.get<unknown>('domainBranding', []));
-      const next = clearDomainKeys(current, host, [slot as BrandingOverrideKey]);
-      await configManager.setAdminConfig({ domainBranding: next });
-    } else {
-      await configManager.removeAdminOverride(slot);
-    }
+    await configManager.removeAdminOverride(slot);
 
-    await auditLog('branding_delete', { slot, host: host || undefined, fileRemoved: removed }, ip);
+    await auditLog('branding_delete', { slot, fileRemoved: removed }, ip);
 
     return NextResponse.json({ success: true });
   } catch (error) {

app/api/admin/config/route.ts

@@ -4,7 +4,6 @@ import { requireAdminAuth, getClientIP } from '@/lib/admin/session';
 import { auditLog } from '@/lib/admin/audit';
 import { CONFIG_ENV_MAP, SENSITIVE_CONFIG_KEYS } from '@/lib/admin/types';
 import { parseJmapServers } from '@/lib/admin/jmap-servers';
-import { parseDomainBranding } from '@/lib/admin/domain-branding';
 import { logger } from '@/lib/logger';
 
 // Strings that count as "no real secret configured" - used so the dashboard
@@ -89,25 +88,6 @@ export async function PATCH(request: NextRequest) {
       updates.jmapServers = sanitized;
     }
 
-    // Normalize domainBranding: drop entries with an invalid/missing host or
-    // duplicate hosts before persisting. Each entry's branding field strings
-    // are passed through unchanged (URL/string content is the operator's
-    // responsibility, same as the flat branding fields).
-    if ('domainBranding' in updates) {
-      const incoming = updates.domainBranding;
-      if (incoming != null && !Array.isArray(incoming)) {
-        return NextResponse.json({ error: 'domainBranding must be an array' }, { status: 400 });
-      }
-      const sanitized = parseDomainBranding(incoming);
-      const incomingCount = Array.isArray(incoming) ? incoming.length : 0;
-      if (sanitized.length !== incomingCount) {
-        return NextResponse.json({
-          error: 'One or more domainBranding entries are invalid (each needs a unique, valid host).',
-        }, { status: 400 });
-      }
-      updates.domainBranding = sanitized;
-    }
-
     // Get old values for audit
     const oldValues: Record<string, unknown> = {};
     for (const key of Object.keys(updates)) {

app/api/admin/plugins/route.ts

@@ -192,9 +192,6 @@ export async function POST(request: NextRequest) {
       ...(manifest.settingsSchema && typeof manifest.settingsSchema === 'object'
         ? { settingsSchema: manifest.settingsSchema as ServerPlugin['settingsSchema'] }
         : {}),
-      ...(manifest.locales && typeof manifest.locales === 'object'
-        ? { locales: manifest.locales as ServerPlugin['locales'] }
-        : {}),
       ...(declaredFrameOrigins.length > 0
         ? { frameOrigins: declaredFrameOrigins }
         : {}),

app/api/auth/oauth/metadata/route.ts

@@ -1,53 +0,0 @@
-import { NextRequest, NextResponse } from 'next/server';
-import { logger } from '@/lib/logger';
-import { configManager } from '@/lib/admin/config-manager';
-import { getMetadata, getRequiredConfig } from '@/lib/oauth/token-exchange';
-
-/**
- * Same-origin OAuth metadata (discovery) proxy.
- *
- * The login page needs the authorization_endpoint to build the PKCE authorize
- * URL in the browser. Discovering it directly from the browser means a
- * cross-origin fetch to the IdP's /.well-known/* documents, which is subject
- * to CORS: providers like Authentik serve those documents without an
- * Access-Control-Allow-Origin header, so the browser blocks the response and
- * discovery fails (issue #382). Performing discovery here - server to server,
- * where CORS does not apply - and handing the result back as a same-origin
- * response sidesteps the problem entirely.
- *
- * The discovery URL is resolved from admin config (via server_id), never from
- * client input, so this cannot be abused as an open SSRF proxy. Endpoint URLs
- * in the discovered document are still gated by the SSRF validator inside
- * discoverOAuth. The returned fields are public well-known metadata.
- */
-export async function GET(request: NextRequest) {
-  await configManager.ensureLoaded();
-  const serverId = request.nextUrl.searchParams.get('server_id');
-
-  let discoveryUrl: string;
-  try {
-    ({ discoveryUrl } = getRequiredConfig(serverId));
-  } catch {
-    // OAuth not configured for this server - surface as "no metadata" rather
-    // than a 500 so the login page just hides the SSO button.
-    return NextResponse.json({ error: 'OAuth not configured' }, { status: 404 });
-  }
-
-  try {
-    const metadata = await getMetadata(serverId);
-    if (!metadata?.authorization_endpoint || !metadata.token_endpoint) {
-      logger.warn('OAuth metadata discovery returned no usable endpoints', { discoveryUrl });
-      return NextResponse.json({ error: 'OAuth discovery failed' }, { status: 502 });
-    }
-    return NextResponse.json(metadata, {
-      // Mirror the in-process discovery cache TTL so repeated login-page loads
-      // hit the CDN/browser cache instead of re-running discovery.
-      headers: { 'Cache-Control': 'private, max-age=600' },
-    });
-  } catch (error) {
-    logger.error('OAuth metadata discovery error', {
-      error: error instanceof Error ? error.message : 'Unknown error',
-    });
-    return NextResponse.json({ error: 'OAuth discovery failed' }, { status: 502 });
-  }
-}

app/api/config/route.ts

@@ -1,15 +1,9 @@
-import { NextRequest, NextResponse } from 'next/server';
+import { NextResponse } from 'next/server';
 import { logger } from '@/lib/logger';
 import { configManager } from '@/lib/admin/config-manager';
 import { parseJmapServers, redactJmapServers } from '@/lib/admin/jmap-servers';
 import { hasSessionSecret } from '@/lib/auth/session-secret';
 import { getOauthScopes } from '@/lib/oauth/tokens';
-import {
-  matchDomainBranding,
-  parseDomainBranding,
-  pickRequestHost,
-  type BrandingOverrideKey,
-} from '@/lib/admin/domain-branding';
 
 /**
  * Runtime configuration endpoint
@@ -19,73 +13,49 @@ import {
  * post-build configuration for Docker deployments.
  *
  * Priority order:
- * 1. Per-domain branding override (admin-configured, matched on request host)
- * 2. Admin dashboard overrides (data/admin/config.json)
- * 3. Runtime env vars (APP_NAME, JMAP_SERVER_URL)
- * 4. Build-time env vars (NEXT_PUBLIC_APP_NAME, NEXT_PUBLIC_JMAP_SERVER_URL)
- * 5. Default values
+ * 1. Admin dashboard overrides (data/admin/config.json)
+ * 2. Runtime env vars (APP_NAME, JMAP_SERVER_URL)
+ * 3. Build-time env vars (NEXT_PUBLIC_APP_NAME, NEXT_PUBLIC_JMAP_SERVER_URL)
+ * 4. Default values
  */
-export async function GET(request: NextRequest) {
+export async function GET() {
   logger.debug('Config requested');
   await configManager.ensureLoaded();
 
-  const host = pickRequestHost(request);
-  const domainOverrides = matchDomainBranding(
-    host,
-    parseDomainBranding(configManager.get<unknown>('domainBranding', [])),
-  );
-
-  // Per-domain override wins over the global value, but only when the
-  // entry explicitly sets that key. Otherwise we fall through to the
-  // global admin/env/default chain.
-  const branded = <T,>(key: BrandingOverrideKey, fallback: T): T => {
-    const override = domainOverrides[key];
-    if (typeof override === 'string' && override.length > 0) return override as T;
-    return configManager.get<T>(key, fallback);
-  };
-
-  const appName =
-    branded<string>('appName', '') || process.env.NEXT_PUBLIC_APP_NAME || 'Webmail';
+  const appName = configManager.get<string>('appName') || process.env.NEXT_PUBLIC_APP_NAME || 'Webmail';
   const jmapServerUrl = configManager.get<string>('jmapServerUrl') || process.env.NEXT_PUBLIC_JMAP_SERVER_URL || '';
   const oauthEnabled = configManager.get<boolean>('oauthEnabled', false);
   const oauthOnly = oauthEnabled && configManager.get<boolean>('oauthOnly', false);
   const stalwartFeaturesEnabled = configManager.get<boolean>('stalwartFeaturesEnabled', true);
   const allowedFrameAncestors = configManager.get<string>('allowedFrameAncestors', '');
 
-  return NextResponse.json(
-    {
-      appName,
-      jmapServerUrl,
-      oauthEnabled,
-      oauthOnly,
-      oauthClientId: configManager.get<string>('oauthClientId', ''),
-      oauthIssuerUrl: configManager.get<string>('oauthIssuerUrl', ''),
-      oauthScopes: getOauthScopes(),
-      rememberMeEnabled: hasSessionSecret(),
-      settingsSyncEnabled: configManager.get<boolean>('settingsSyncEnabled', false) && hasSessionSecret(),
-      stalwartFeaturesEnabled,
-      devMode: configManager.get<boolean>('devMode', false),
-      faviconUrl: branded<string>('faviconUrl', '/branding/Bulwark_Favicon.svg'),
-      appLogoLightUrl: branded<string>('appLogoLightUrl', ''),
-      appLogoDarkUrl: branded<string>('appLogoDarkUrl', ''),
-      loginLogoLightUrl: branded<string>('loginLogoLightUrl', '/branding/Bulwark_Logo_Color.svg'),
-      loginLogoDarkUrl: branded<string>('loginLogoDarkUrl', '/branding/Bulwark_Logo_White.svg'),
-      loginCompanyName: branded<string>('loginCompanyName', ''),
-      loginImprintUrl: branded<string>('loginImprintUrl', ''),
-      loginPrivacyPolicyUrl: branded<string>('loginPrivacyPolicyUrl', ''),
-      loginWebsiteUrl: branded<string>('loginWebsiteUrl', ''),
-      demoMode: configManager.get<boolean>('demoMode', false),
-      allowCustomJmapEndpoint: configManager.get<boolean>('allowCustomJmapEndpoint', false),
-      jmapServers: redactJmapServers(parseJmapServers(configManager.get<unknown>('jmapServers', []))),
-      jmapServerAutoPickByDomain: configManager.get<boolean>('jmapServerAutoPickByDomain', false),
-      autoSsoEnabled: configManager.get<boolean>('autoSsoEnabled', false),
-      embeddedMode: !!allowedFrameAncestors && allowedFrameAncestors !== "'none'",
-      parentOrigin: configManager.get<string>('parentOrigin', ''),
-    },
-    {
-      // Branding varies by host, so any cache between us and the browser
-      // must key its entry by the host headers we consulted.
-      headers: { Vary: 'Host, X-Forwarded-Host' },
-    },
-  );
+  return NextResponse.json({
+    appName,
+    jmapServerUrl,
+    oauthEnabled,
+    oauthOnly,
+    oauthClientId: configManager.get<string>('oauthClientId', ''),
+    oauthIssuerUrl: configManager.get<string>('oauthIssuerUrl', ''),
+    oauthScopes: getOauthScopes(),
+    rememberMeEnabled: hasSessionSecret(),
+    settingsSyncEnabled: configManager.get<boolean>('settingsSyncEnabled', false) && hasSessionSecret(),
+    stalwartFeaturesEnabled,
+    devMode: configManager.get<boolean>('devMode', false),
+    faviconUrl: configManager.get<string>('faviconUrl', '/branding/Bulwark_Favicon.svg'),
+    appLogoLightUrl: configManager.get<string>('appLogoLightUrl', ''),
+    appLogoDarkUrl: configManager.get<string>('appLogoDarkUrl', ''),
+    loginLogoLightUrl: configManager.get<string>('loginLogoLightUrl', '/branding/Bulwark_Logo_Color.svg'),
+    loginLogoDarkUrl: configManager.get<string>('loginLogoDarkUrl', '/branding/Bulwark_Logo_White.svg'),
+    loginCompanyName: configManager.get<string>('loginCompanyName', ''),
+    loginImprintUrl: configManager.get<string>('loginImprintUrl', ''),
+    loginPrivacyPolicyUrl: configManager.get<string>('loginPrivacyPolicyUrl', ''),
+    loginWebsiteUrl: configManager.get<string>('loginWebsiteUrl', ''),
+    demoMode: configManager.get<boolean>('demoMode', false),
+    allowCustomJmapEndpoint: configManager.get<boolean>('allowCustomJmapEndpoint', false),
+    jmapServers: redactJmapServers(parseJmapServers(configManager.get<unknown>('jmapServers', []))),
+    jmapServerAutoPickByDomain: configManager.get<boolean>('jmapServerAutoPickByDomain', false),
+    autoSsoEnabled: configManager.get<boolean>('autoSsoEnabled', false),
+    embeddedMode: !!allowedFrameAncestors && allowedFrameAncestors !== "'none'",
+    parentOrigin: configManager.get<string>('parentOrigin', ''),
+  });
 }

app/api/dev-jmap/[...path]/route.ts

@@ -723,18 +723,7 @@ const emails: MockEmail[] = [
 // Identities
 // ---------------------------------------------------------------------------
 
-type MockIdentity = {
-  id: string;
-  name: string;
-  email: string;
-  replyTo: Array<{ name?: string; email: string }> | null;
-  bcc: Array<{ name?: string; email: string }> | null;
-  textSignature: string | null;
-  htmlSignature: string | null;
-  mayDelete: boolean;
-};
-
-const IDENTITIES: MockIdentity[] = [
+const IDENTITIES = [
   {
     id: 'identity-001',
     name: 'Dev User',
@@ -1573,55 +1562,13 @@ function handleIdentityGet(_args: MethodArgs, callId: string): MethodResult {
 
 function handleIdentitySet(args: MethodArgs, callId: string): MethodResult {
   const created: Record<string, { id: string }> = {};
-  const updated: Record<string, null> = {};
-  const destroyed: string[] = [];
-
-  const create = args.create as Record<string, Record<string, unknown>> | undefined;
+  const create = args.create as Record<string, unknown> | undefined;
   if (create) {
-    for (const [key, data] of Object.entries(create)) {
-      const newId = `identity-${Date.now()}-${key}`;
-      IDENTITIES.push({
-        id: newId,
-        name: (data.name as string) || '',
-        email: (data.email as string) || '',
-        replyTo: (data.replyTo as MockIdentity['replyTo']) ?? null,
-        bcc: (data.bcc as MockIdentity['bcc']) ?? null,
-        textSignature: (data.textSignature as string | null) ?? null,
-        htmlSignature: (data.htmlSignature as string | null) ?? null,
-        mayDelete: true,
-      });
-      created[key] = { id: newId };
+    for (const key of Object.keys(create)) {
+      created[key] = { id: `identity-new-${Date.now()}-${key}` };
     }
   }
-
-  const update = args.update as Record<string, Record<string, unknown>> | undefined;
-  if (update) {
-    for (const [id, changes] of Object.entries(update)) {
-      const identity = IDENTITIES.find((i) => i.id === id);
-      if (identity) {
-        // Email is immutable per the identity form, so it's never in `changes`.
-        if (changes.name !== undefined) identity.name = changes.name as string;
-        if (changes.replyTo !== undefined) identity.replyTo = changes.replyTo as MockIdentity['replyTo'];
-        if (changes.bcc !== undefined) identity.bcc = changes.bcc as MockIdentity['bcc'];
-        if (changes.textSignature !== undefined) identity.textSignature = changes.textSignature as string | null;
-        if (changes.htmlSignature !== undefined) identity.htmlSignature = changes.htmlSignature as string | null;
-        updated[id] = null;
-      }
-    }
-  }
-
-  const destroy = args.destroy as string[] | undefined;
-  if (destroy) {
-    for (const id of destroy) {
-      const idx = IDENTITIES.findIndex((i) => i.id === id);
-      if (idx !== -1) {
-        IDENTITIES.splice(idx, 1);
-        destroyed.push(id);
-      }
-    }
-  }
-
-  return ['Identity/set', { accountId: ACCOUNT_ID, oldState: nextState(), newState: nextState(), created, updated, destroyed, notCreated: null, notUpdated: null, notDestroyed: null }, callId];
+  return ['Identity/set', { accountId: ACCOUNT_ID, oldState: nextState(), newState: nextState(), created, updated: null, destroyed: null }, callId];
 }
 
 function handleThreadGet(args: MethodArgs, callId: string): MethodResult {

app/api/favicon/route.ts

@@ -19,20 +19,6 @@ const negativeCache = new Map<string, NegativeCacheEntry>();
 const NEGATIVE_CACHE_TTL_MS = 24 * 60 * 60 * 1000; // 1 day
 const NEGATIVE_CACHE_MAX_SIZE = 2000;
 
-// 1x1 transparent PNG. Returned with HTTP 200 (instead of 404) when no
-// favicon exists for a domain, so the browser's <img> tag loads it cleanly
-// without spamming the DevTools console with red 404 errors. Avatar.tsx
-// checks `naturalWidth <= 1` in onLoad and falls back to initials.
-const TRANSPARENT_PNG = Buffer.from(
-  'iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mNgAAIAAAUAAen63NgAAAAASUVORK5CYII=',
-  'base64',
-);
-const MISSING_FAVICON_HEADERS = {
-  'Content-Type': 'image/png',
-  'Cache-Control': 'public, max-age=86400', // 1 day
-  'X-Bulwark-Favicon': 'missing',
-};
-
 // Strict domain validation to prevent SSRF
 const DOMAIN_RE = /^[a-z0-9]([a-z0-9-]*[a-z0-9])?(\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)+$/i;
 
@@ -448,7 +434,10 @@ export async function GET(request: NextRequest) {
   // Check negative cache (domains known to have no favicon)
   const neg = negativeCache.get(normalizedDomain);
   if (neg && Date.now() - neg.fetchedAt < NEGATIVE_CACHE_TTL_MS) {
-    return new NextResponse(TRANSPARENT_PNG, { headers: MISSING_FAVICON_HEADERS });
+    return new NextResponse(null, {
+      status: 404,
+      headers: { 'Cache-Control': 'public, max-age=86400' }, // 1 day
+    });
   }
 
   // Check cache
@@ -471,7 +460,10 @@ export async function GET(request: NextRequest) {
     if (!upstream.ok) {
       evictNegativeOldest();
       negativeCache.set(normalizedDomain, { fetchedAt: Date.now() });
-      return new NextResponse(TRANSPARENT_PNG, { headers: MISSING_FAVICON_HEADERS });
+      return new NextResponse(null, {
+        status: 404,
+        headers: { 'Cache-Control': 'public, max-age=86400' },
+      });
     }
 
     const contentType = upstream.headers.get('content-type') || 'image/x-icon';
@@ -481,7 +473,10 @@ export async function GET(request: NextRequest) {
     if (data.byteLength < 10) {
       evictNegativeOldest();
       negativeCache.set(normalizedDomain, { fetchedAt: Date.now() });
-      return new NextResponse(TRANSPARENT_PNG, { headers: MISSING_FAVICON_HEADERS });
+      return new NextResponse(null, {
+        status: 404,
+        headers: { 'Cache-Control': 'public, max-age=86400' },
+      });
     }
 
     // Cache the result

app/api/plugins/route.ts

@@ -57,9 +57,6 @@ export async function GET() {
       // Per-user settings schema, captured from the manifest at upload/load
       // time so the client can render the settings UI without re-parsing.
       settingsSchema: p.settingsSchema,
-      // Plugin-declared i18n tables, so the sandbox can localize plugin
-      // strings via api.i18n.t().
-      locales: p.locales,
     }));
 
     // Only serve enabled themes

app/api/pwa-icon/[size]/route.ts

@@ -4,11 +4,6 @@ import path from 'node:path';
 import { readFile } from 'node:fs/promises';
 import { configManager } from '@/lib/admin/config-manager';
 import { getConfigDir } from '@/lib/admin/paths';
-import {
-  matchDomainBranding,
-  parseDomainBranding,
-  pickRequestHost,
-} from '@/lib/admin/domain-branding';
 
 const VALID_SIZES = new Set([192, 512]);
 
@@ -38,7 +33,7 @@ async function fetchSourceImage(iconUrl: string): Promise<Buffer> {
 }
 
 export async function GET(
-  req: NextRequest,
+  _req: NextRequest,
   { params }: { params: Promise<{ size: string }> }
 ) {
   const { size: sizeParam } = await params;
@@ -49,15 +44,8 @@ export async function GET(
   }
 
   await configManager.ensureLoaded();
-  const host = pickRequestHost(req);
-  const domainOverrides = matchDomainBranding(
-    host,
-    parseDomainBranding(configManager.get<unknown>('domainBranding', [])),
-  );
   const sources = configManager.getAllWithSources();
   const iconUrl =
-    domainOverrides.pwaIconUrl ||
-    domainOverrides.faviconUrl ||
     (sources.pwaIconUrl?.source !== 'default' ? (sources.pwaIconUrl?.value as string) : '') ||
     (sources.faviconUrl?.source !== 'default' ? (sources.faviconUrl?.value as string) : '');
   if (!iconUrl) {
@@ -67,7 +55,6 @@ export async function GET(
   const pngHeaders = {
     'Content-Type': 'image/png',
     'Cache-Control': 'public, max-age=86400',
-    Vary: 'Host, X-Forwarded-Host',
   };
 
   const cacheKey = `${size}|${iconUrl}`;

app/api/pwa-screenshot/[variant]/route.ts

@@ -1,104 +0,0 @@
-import { NextRequest, NextResponse } from 'next/server';
-import sharp from 'sharp';
-import path from 'node:path';
-import { readFile } from 'node:fs/promises';
-import { configManager } from '@/lib/admin/config-manager';
-import { getConfigDir } from '@/lib/admin/paths';
-import {
-  matchDomainBranding,
-  parseDomainBranding,
-  pickRequestHost,
-} from '@/lib/admin/domain-branding';
-
-/**
- * Variant → target output size + admin config key.
- * Matches the sizes declared in app/manifest.ts so the rendered PNG fits
- * the slot the manifest tells the browser about.
- */
-const VARIANTS = {
-  mobile: { width: 540, height: 720, configKey: 'pwaScreenshotMobileUrl' as const },
-  desktop: { width: 1280, height: 720, configKey: 'pwaScreenshotDesktopUrl' as const },
-} as const;
-
-type Variant = keyof typeof VARIANTS;
-
-// Cache resized images keyed by (variant, source URL).
-const cache = new Map<string, Blob>();
-
-async function fetchSourceImage(iconUrl: string): Promise<Buffer> {
-  if (iconUrl.startsWith('http://') || iconUrl.startsWith('https://')) {
-    const res = await fetch(iconUrl);
-    if (!res.ok) throw new Error(`Failed to fetch PWA screenshot: ${res.status}`);
-    return Buffer.from(await res.arrayBuffer());
-  }
-
-  // Admin-uploaded branding asset: served from /api/admin/branding/<file>
-  // but stored on disk under getConfigDir()/branding/.
-  const ADMIN_BRANDING_PREFIX = '/api/admin/branding/';
-  if (iconUrl.startsWith(ADMIN_BRANDING_PREFIX)) {
-    const filename = path.basename(iconUrl.slice(ADMIN_BRANDING_PREFIX.length));
-    return readFile(path.join(getConfigDir(), 'branding', filename));
-  }
-
-  // Path relative to public/ directory
-  const publicPath = path.join(process.cwd(), 'public', iconUrl.replace(/^\//, ''));
-  return readFile(publicPath);
-}
-
-export async function GET(
-  req: NextRequest,
-  { params }: { params: Promise<{ variant: string }> },
-) {
-  const { variant: variantParam } = await params;
-  if (!(variantParam in VARIANTS)) {
-    return new NextResponse('Invalid variant. Allowed: mobile, desktop', { status: 400 });
-  }
-  const { width, height, configKey } = VARIANTS[variantParam as Variant];
-
-  await configManager.ensureLoaded();
-  const host = pickRequestHost(req);
-  const domainOverrides = matchDomainBranding(
-    host,
-    parseDomainBranding(configManager.get<unknown>('domainBranding', [])),
-  );
-  const sources = configManager.getAllWithSources();
-  const sourceEntry = sources[configKey];
-  const screenshotUrl =
-    domainOverrides[configKey] ||
-    (sourceEntry?.source !== 'default' ? (sourceEntry?.value as string | undefined) : undefined);
-  if (!screenshotUrl) {
-    return new NextResponse('No PWA screenshot configured', { status: 404 });
-  }
-
-  const pngHeaders = {
-    'Content-Type': 'image/png',
-    'Cache-Control': 'public, max-age=86400',
-    Vary: 'Host, X-Forwarded-Host',
-  };
-  const cacheKey = `${variantParam}|${screenshotUrl}`;
-
-  try {
-    if (cache.has(cacheKey)) {
-      return new NextResponse(cache.get(cacheKey)!, { headers: pngHeaders });
-    }
-
-    const sourceBuffer = await fetchSourceImage(screenshotUrl);
-    // 'cover' fills the target box without letterboxing - screenshots benefit
-    // more from cropping than from a transparent frame around them. Users get
-    // a hint about the recommended aspect ratio in the admin UI.
-    const resized = await sharp(sourceBuffer)
-      .resize(width, height, { fit: 'cover', position: 'center' })
-      .png()
-      .toBuffer();
-
-    const ab = new ArrayBuffer(resized.byteLength);
-    new Uint8Array(ab).set(resized);
-    const blob = new Blob([ab], { type: 'image/png' });
-    cache.set(cacheKey, blob);
-
-    return new NextResponse(blob, { headers: pngHeaders });
-  } catch (err) {
-    console.error('Failed to generate PWA screenshot:', err);
-    return new NextResponse('Failed to generate screenshot', { status: 500 });
-  }
-}

app/api/setup/branding/route.ts

@@ -23,13 +23,10 @@ const ALLOWED_MIME_TYPES = new Set([
 
 const VALID_SLOTS = new Set([
   'faviconUrl',
-  'pwaIconUrl',
   'appLogoLightUrl',
   'appLogoDarkUrl',
   'loginLogoLightUrl',
   'loginLogoDarkUrl',
-  'pwaScreenshotMobileUrl',
-  'pwaScreenshotDesktopUrl',
 ]);
 
 const EXT_BY_MIME: Record<string, string> = {

app/api/translate/route.ts

@@ -1,298 +0,0 @@
-import { NextRequest, NextResponse } from 'next/server';
-
-// Host-side proxy backing the "Translate" plugin (manifest apiPostPaths:
-// ["/api/translate"]). The plugin slot iframe POSTs { text, target, source,
-// provider } here via api.http.post; we forward to a free translation backend
-// and return { translatedText, detectedSource } in a stable shape.
-//
-// Two providers:
-//   - "mymemory"     — public MyMemory API, no configuration required. Its
-//                       langpair needs an explicit source language, so when the
-//                       plugin asks for "auto" we detect it locally first.
-//   - "libretranslate" — only available when the host sets LIBRETRANSLATE_URL
-//                       (and optionally LIBRETRANSLATE_API_KEY). Supports native
-//                       source auto-detection.
-
-export const runtime = 'nodejs';
-
-const MAX_CHARS = 5000;
-// Long bodies are split into ~480-char chunks for MyMemory and translated
-// sequentially, so allow enough headroom for ~10 round-trips.
-const TIMEOUT_MS = 25000;
-
-type Provider = 'mymemory' | 'libretranslate';
-
-interface TranslateBody {
-  text?: unknown;
-  target?: unknown;
-  source?: unknown;
-  provider?: unknown;
-}
-
-interface TranslateResult {
-  translatedText: string;
-  detectedSource?: string;
-}
-
-// ─── Lightweight language detection ───────────────────────────
-//
-// MyMemory has no auto-detect, so we infer a source language from the text.
-// Non-Latin scripts are decided by Unicode range; Latin-script European
-// languages are scored by stop-word frequency. Detection only needs to be good
-// enough to (a) pick a sensible langpair and (b) let the plugin skip messages
-// already in the target language.
-
-const SCRIPT_RANGES: ReadonlyArray<[RegExp, string]> = [
-  [/[぀-ヿ]/, 'ja'], // Hiragana / Katakana
-  [/[가-힯]/, 'ko'], // Hangul
-  [/[一-鿿]/, 'zh'], // CJK ideographs (after JP/KR checks)
-  [/[Ѐ-ӿ]/, 'ru'], // Cyrillic (ru vs uk refined below)
-  [/[Ͱ-Ͽ]/, 'el'], // Greek
-  [/[؀-ۿ]/, 'ar'], // Arabic
-  [/[֐-׿]/, 'he'], // Hebrew
-  [/[ऀ-ॿ]/, 'hi'], // Devanagari
-];
-
-// Distinctive stop words per Latin-script language from the manifest's option
-// list. Kept small and high-signal to avoid cross-language collisions.
-const LATIN_STOPWORDS: Record<string, readonly string[]> = {
-  en: ['the', 'and', 'you', 'that', 'with', 'for', 'this', 'have', 'are'],
-  de: ['der', 'die', 'und', 'das', 'ist', 'nicht', 'mit', 'sie', 'ein', 'auch'],
-  fr: ['les', 'des', 'une', 'est', 'pour', 'que', 'vous', 'dans', 'avec', 'pas'],
-  es: ['que', 'los', 'una', 'por', 'con', 'para', 'como', 'pero', 'más', 'esta'],
-  it: ['che', 'non', 'per', 'una', 'sono', 'con', 'come', 'questo', 'anche', 'della'],
-  pt: ['que', 'não', 'uma', 'com', 'para', 'como', 'mais', 'você', 'está', 'isso'],
-  nl: ['het', 'een', 'van', 'dat', 'niet', 'met', 'voor', 'aan', 'zijn', 'maar'],
-  pl: ['nie', 'jest', 'się', 'ale', 'oraz', 'tego', 'jak', 'tym', 'przez', 'dla'],
-  sv: ['och', 'att', 'det', 'som', 'för', 'med', 'inte', 'den', 'till', 'har'],
-  no: ['og', 'det', 'som', 'for', 'med', 'ikke', 'har', 'til', 'denne', 'jeg'],
-  da: ['og', 'det', 'som', 'for', 'med', 'ikke', 'har', 'til', 'denne', 'jeg'],
-  fi: ['että', 'olen', 'tämä', 'kanssa', 'mutta', 'sekä', 'ei', 'on', 'ja', 'jotta'],
-  cs: ['není', 'jsem', 'pro', 'ale', 'jako', 'tento', 'také', 'přes', 'jsou', 'své'],
-  ro: ['este', 'pentru', 'care', 'dar', 'sunt', 'această', 'mai', 'din', 'sau', 'nu'],
-  hu: ['hogy', 'nem', 'egy', 'van', 'ezt', 'vagy', 'mint', 'csak', 'ezzel', 'így'],
-  tr: ['bir', 'için', 'değil', 'bu', 'çok', 'daha', 'ama', 'gibi', 've', 'ile'],
-};
-
-function detectLanguage(text: string): string {
-  const sample = text.slice(0, 1000);
-  for (const [range, lang] of SCRIPT_RANGES) {
-    if (range.test(sample)) {
-      // Ukrainian shares Cyrillic with Russian; its unique glyphs decide it.
-      if (lang === 'ru' && /[єіїґ]/.test(sample)) return 'uk';
-      return lang;
-    }
-  }
-
-  const words = sample.toLowerCase().match(/[a-zà-ÿčśžłńęąółżźć]+/gi) || [];
-  if (words.length === 0) return 'en';
-  const counts: Record<string, number> = {};
-  const wordSet = new Set(words);
-  for (const [lang, stops] of Object.entries(LATIN_STOPWORDS)) {
-    let score = 0;
-    for (const stop of stops) if (wordSet.has(stop)) score += 1;
-    counts[lang] = score;
-  }
-  let best = 'en';
-  let bestScore = -1;
-  for (const [lang, score] of Object.entries(counts)) {
-    if (score > bestScore) {
-      best = lang;
-      bestScore = score;
-    }
-  }
-  return bestScore > 0 ? best : 'en';
-}
-
-function baseLang(code: string): string {
-  return String(code || '').toLowerCase().split('-')[0];
-}
-
-// ─── Chunking ─────────────────────────────────────────────────
-//
-// MyMemory's free endpoint caps each request's `q` at 500 characters and
-// silently returns only the translated prefix beyond that — which is why long
-// emails came back truncated ("…about Sel…"). We split the text into
-// line-aware chunks under the limit, translate each, then rejoin so the whole
-// body is covered.
-
-const MYMEMORY_CHUNK = 480;
-
-function chunkText(text: string, max: number): string[] {
-  const chunks: string[] = [];
-  let cur = '';
-  const flush = () => {
-    if (cur) {
-      chunks.push(cur);
-      cur = '';
-    }
-  };
-  for (const line of text.split('\n')) {
-    if (line.length > max) {
-      flush();
-      // A single over-long line (e.g. a long URL list): split on words, and
-      // hard-cut any word that is itself longer than the limit.
-      let seg = '';
-      for (const word of line.split(' ')) {
-        const piece = seg ? seg + ' ' + word : word;
-        if (piece.length > max) {
-          if (seg) {
-            chunks.push(seg);
-            seg = '';
-          }
-          if (word.length > max) {
-            for (let i = 0; i < word.length; i += max) chunks.push(word.slice(i, i + max));
-          } else {
-            seg = word;
-          }
-        } else {
-          seg = piece;
-        }
-      }
-      if (seg) chunks.push(seg);
-      continue;
-    }
-    if (cur && cur.length + 1 + line.length > max) flush();
-    cur = cur ? cur + '\n' + line : line;
-  }
-  flush();
-  return chunks;
-}
-
-// ─── Providers ────────────────────────────────────────────────
-
-async function mymemoryRequest(
-  q: string,
-  langpair: string,
-  signal: AbortSignal,
-): Promise<string> {
-  const url = new URL('https://api.mymemory.translated.net/get');
-  url.searchParams.set('q', q);
-  url.searchParams.set('langpair', langpair);
-
-  const res = await fetch(url.toString(), {
-    signal,
-    headers: { 'User-Agent': 'JMAP-Webmail/1.0 Translate-Plugin' },
-  });
-  const data = (await res.json().catch(() => null)) as
-    | { responseStatus?: number | string; responseData?: { translatedText?: string }; responseDetails?: string }
-    | null;
-  if (!res.ok || !data) {
-    throw new Error(`MyMemory returned ${res.status}`);
-  }
-  const status = Number(data.responseStatus);
-  if (status && status !== 200) {
-    throw new Error(data.responseDetails || `MyMemory error ${status}`);
-  }
-  const translatedText = data.responseData?.translatedText || '';
-  if (!translatedText) {
-    throw new Error('MyMemory returned no translation');
-  }
-  return translatedText;
-}
-
-async function translateMyMemory(
-  text: string,
-  source: string,
-  target: string,
-  signal: AbortSignal,
-): Promise<TranslateResult> {
-  const detected = source === 'auto' || !source ? detectLanguage(text) : baseLang(source);
-  const tgt = baseLang(target);
-  // Nothing to do if already in the target language; the plugin skips display.
-  if (detected === tgt) {
-    return { translatedText: text, detectedSource: detected };
-  }
-  const langpair = `${detected}|${tgt}`;
-  const chunks = chunkText(text, MYMEMORY_CHUNK);
-  // Sequential to stay friendly to MyMemory's free-tier rate limits; emails are
-  // usually one or two chunks.
-  const translated: string[] = [];
-  for (const chunk of chunks) {
-    translated.push(await mymemoryRequest(chunk, langpair, signal));
-  }
-  return { translatedText: translated.join('\n'), detectedSource: detected };
-}
-
-async function translateLibre(
-  text: string,
-  source: string,
-  target: string,
-  signal: AbortSignal,
-): Promise<TranslateResult> {
-  const endpoint = process.env.LIBRETRANSLATE_URL;
-  if (!endpoint) {
-    throw new Error('LibreTranslate is not configured on this server');
-  }
-  const apiKey = process.env.LIBRETRANSLATE_API_KEY;
-  const url = endpoint.replace(/\/+$/, '') + '/translate';
-  const res = await fetch(url, {
-    method: 'POST',
-    signal,
-    headers: { 'Content-Type': 'application/json' },
-    body: JSON.stringify({
-      q: text,
-      source: source || 'auto',
-      target: baseLang(target),
-      format: 'text',
-      ...(apiKey ? { api_key: apiKey } : {}),
-    }),
-  });
-  const data = (await res.json().catch(() => null)) as
-    | { translatedText?: string; detectedLanguage?: { language?: string }; error?: string }
-    | null;
-  if (!res.ok || !data) {
-    throw new Error(data?.error || `LibreTranslate returned ${res.status}`);
-  }
-  if (!data.translatedText) {
-    throw new Error(data.error || 'LibreTranslate returned no translation');
-  }
-  return {
-    translatedText: data.translatedText,
-    detectedSource: data.detectedLanguage?.language || (source !== 'auto' ? baseLang(source) : undefined),
-  };
-}
-
-// ─── Route ────────────────────────────────────────────────────
-
-export async function POST(request: NextRequest) {
-  let body: TranslateBody;
-  try {
-    body = (await request.json()) as TranslateBody;
-  } catch {
-    return NextResponse.json({ error: 'Invalid request body' }, { status: 400 });
-  }
-
-  const text = typeof body.text === 'string' ? body.text.trim() : '';
-  const target = typeof body.target === 'string' && body.target.trim() ? body.target.trim() : 'en';
-  const source = typeof body.source === 'string' && body.source.trim() ? body.source.trim() : 'auto';
-  const provider: Provider = body.provider === 'libretranslate' ? 'libretranslate' : 'mymemory';
-
-  if (!text) {
-    return NextResponse.json({ error: 'No text to translate' }, { status: 400 });
-  }
-  if (text.length > MAX_CHARS) {
-    return NextResponse.json(
-      { error: `Text exceeds the ${MAX_CHARS}-character limit` },
-      { status: 413 },
-    );
-  }
-
-  const controller = new AbortController();
-  const timeout = setTimeout(() => controller.abort(), TIMEOUT_MS);
-  try {
-    const result =
-      provider === 'libretranslate'
-        ? await translateLibre(text, source, target, controller.signal)
-        : await translateMyMemory(text, source, target, controller.signal);
-    return NextResponse.json(result, { status: 200 });
-  } catch (error: unknown) {
-    if (error instanceof Error && error.name === 'AbortError') {
-      return NextResponse.json({ error: 'Translation timed out' }, { status: 504 });
-    }
-    const message = error instanceof Error ? error.message : 'Translation failed';
-    return NextResponse.json({ error: message }, { status: 502 });
-  } finally {
-    clearTimeout(timeout);
-  }
-}

app/globals.css

@@ -70,7 +70,7 @@
 }
 
 .dark {
-  --color-border: rgba(128, 128, 128, 0.3);
+  --color-border: #262626;
   --color-input: #262626;
   --color-ring: #d4d4d4;
   --color-background: #0a0a0a;

app/manifest.ts

@@ -1,12 +1,5 @@
 import type { MetadataRoute } from "next";
-import { headers } from "next/headers";
 import { configManager } from "@/lib/admin/config-manager";
-import {
-  matchDomainBranding,
-  parseDomainBranding,
-  pickRequestHost,
-  type BrandingOverrideKey,
-} from "@/lib/admin/domain-branding";
 
 export const dynamic = "force-dynamic";
 
@@ -32,40 +25,25 @@ const withBase = (p: string) => `${BASE_PATH}${p}`;
 export default async function manifest(): Promise<ExtendedManifest> {
   await configManager.ensureLoaded();
 
-  const host = pickRequestHost(await headers());
-  const domainOverrides = matchDomainBranding(
-    host,
-    parseDomainBranding(configManager.get<unknown>("domainBranding", [])),
-  );
-  const branded = <T,>(key: BrandingOverrideKey, fallback: T): T => {
-    const override = domainOverrides[key];
-    if (typeof override === "string" && override.length > 0) return override as T;
-    return configManager.get<T>(key, fallback);
-  };
-
   const appName =
-    branded<string>("appName", "") ||
+    configManager.get<string>("appName") ||
     process.env.NEXT_PUBLIC_APP_NAME ||
     "Bulwark Webmail";
 
-  const shortName = branded<string>("appShortName", "") || appName;
+  const shortName = configManager.get<string>("appShortName") || appName;
   const description =
-    branded<string>("appDescription", "") ||
+    configManager.get<string>("appDescription") ||
     "A modern webmail client built for Stalwart Mail Server";
-  const themeColor = branded<string>("pwaThemeColor", "") || "#ffffff";
-  const backgroundColor = branded<string>("pwaBackgroundColor", "") || "#ffffff";
+  const themeColor = configManager.get<string>("pwaThemeColor") || "#ffffff";
+  const backgroundColor = configManager.get<string>("pwaBackgroundColor") || "#ffffff";
 
-  // If pwaIconUrl or faviconUrl was explicitly configured (admin override,
-  // env var, or per-domain override), serve dynamically resized PNGs via
-  // /api/pwa-icon/[size]. Otherwise fall back to the static Bulwark PNGs -
-  // sources marked "default" are the built-in placeholder paths and not
-  // real custom icons.
+  // If pwaIconUrl or faviconUrl was explicitly configured (admin override or
+  // env var), serve dynamically resized PNGs via /api/pwa-icon/[size].
+  // Otherwise fall back to the static Bulwark PNGs - sources marked "default"
+  // are the built-in placeholder paths and not real custom icons.
   const sources = configManager.getAllWithSources();
   const hasCustomIcon =
-    !!domainOverrides.pwaIconUrl ||
-    !!domainOverrides.faviconUrl ||
-    sources.pwaIconUrl?.source !== "default" ||
-    sources.faviconUrl?.source !== "default";
+    sources.pwaIconUrl?.source !== "default" || sources.faviconUrl?.source !== "default";
 
   const icons: MetadataRoute.Manifest["icons"] = hasCustomIcon
     ? [
@@ -95,25 +73,10 @@ export default async function manifest(): Promise<ExtendedManifest> {
     background_color: backgroundColor,
     icons,
     categories: ["productivity"],
-    // Use admin-uploaded screenshots when configured (per-domain override,
-    // admin/env global; resized on the fly via /api/pwa-screenshot/[variant]);
-    // otherwise fall back to the built-in Bulwark screenshots from public/.
-    screenshots: (() => {
-      const hasMobile =
-        !!domainOverrides.pwaScreenshotMobileUrl ||
-        sources.pwaScreenshotMobileUrl?.source !== "default";
-      const hasDesktop =
-        !!domainOverrides.pwaScreenshotDesktopUrl ||
-        sources.pwaScreenshotDesktopUrl?.source !== "default";
-      return [
-        hasMobile
-          ? { src: withBase("/api/pwa-screenshot/mobile"), sizes: "540x720", type: "image/png" }
-          : { src: withBase("/screenshot-540x720.png"), sizes: "540x720", type: "image/png" },
-        hasDesktop
-          ? { src: withBase("/api/pwa-screenshot/desktop"), sizes: "1280x720", type: "image/png" }
-          : { src: withBase("/screenshot-1280x720.png"), sizes: "1280x720", type: "image/png" },
-      ];
-    })(),
+    screenshots: [
+      { src: withBase("/screenshot-540x720.png"), sizes: "540x720", type: "image/png" },
+      { src: withBase("/screenshot-1280x720.png"), sizes: "1280x720", type: "image/png" },
+    ],
     protocol_handlers: [
       { protocol: "mailto", url: withBase("/protocol/mailto?url=%s") },
       { protocol: "webcal", url: withBase("/protocol/webcal?url=%s") },

components/calendar/calendar-sidebar-panel.tsx

@@ -2,7 +2,7 @@
 
 import { useMemo, useState } from "react";
 import { useTranslations } from "next-intl";
-import { ChevronDown, ChevronRight, Globe, ListTodo, Pencil, RefreshCw, Share2, Trash2, Cake, User, Users, Plus, Eraser, Palette, Shuffle } from "lucide-react";
+import { ChevronDown, ChevronRight, Globe, ListTodo, Pencil, RefreshCw, Share2, Trash2, Cake, User, Users, Plus, Eraser, Palette } from "lucide-react";
 import { cn, formatDateTime } from "@/lib/utils";
 import type { Calendar } from "@/lib/jmap/types";
 import { CalendarColorPicker } from "@/components/settings/calendar-management-settings";
@@ -11,7 +11,6 @@ import { useSettingsStore } from "@/stores/settings-store";
 import { useTaskStore } from "@/stores/task-store";
 import { useAccountStore } from "@/stores/account-store";
 import { BIRTHDAY_CALENDAR_ID } from "@/lib/birthday-calendar";
-import { sharedCalendarColorKey } from "@/lib/shared-calendar-colors";
 import { toast } from "@/stores/toast-store";
 import { ContextMenu, ContextMenuItem, ContextMenuSeparator, ContextMenuSubMenu } from "@/components/ui/context-menu";
 import { useContextMenu } from "@/hooks/use-context-menu";
@@ -51,7 +50,6 @@ interface CalendarSidebarPanelProps {
   selectedCalendarIds: string[];
   onToggleVisibility: (id: string) => void;
   onColorChange?: (calendarId: string, color: string) => void;
-  onResetColor?: (calendar: Calendar) => void;
   onShareCalendar?: (calendar: Calendar) => void;
   onCreateEvent?: (calendar: Calendar) => void;
   onClearCalendar?: (calendar: Calendar) => void;
@@ -73,7 +71,6 @@ export function CalendarSidebarPanel({
   selectedCalendarIds,
   onToggleVisibility,
   onColorChange,
-  onResetColor,
   onShareCalendar,
   onCreateEvent,
   onClearCalendar,
@@ -97,7 +94,6 @@ export function CalendarSidebarPanel({
   const refreshICalSubscription = useCalendarStore((s) => s.refreshICalSubscription);
   const removeICalSubscription = useCalendarStore((s) => s.removeICalSubscription);
   const timeFormat = useSettingsStore((s) => s.timeFormat);
-  const sharedCalendarColors = useSettingsStore((s) => s.sharedCalendarColors);
   const enableCalendarTasks = useSettingsStore((s) => s.enableCalendarTasks);
   const tasks = useTaskStore((s) => s.tasks);
   const setViewMode = useCalendarStore((s) => s.setViewMode);
@@ -307,11 +303,9 @@ export function CalendarSidebarPanel({
     const canCreate = onCreateEvent && !isBirthday && cal.myRights?.mayWriteOwn !== false;
     const canShare = onShareCalendar && cal.myRights?.mayShare && !cal.isShared;
     const canChangeColor = !!onColorChange;
-    const hasColorOverride = !!cal.isShared && !!sharedCalendarColors[sharedCalendarColorKey(cal)];
-    const canResetColor = !!onResetColor && hasColorOverride;
     const canClear = onClearCalendar && !isBirthday && cal.myRights?.mayDelete !== false;
     const canDelete = onDeleteCalendar && !isBirthday && !cal.isDefault && !cal.isShared;
-    const showSeparator = (canCreate || canShare || canChangeColor || canResetColor) && (canClear || canDelete);
+    const showSeparator = (canCreate || canShare || canChangeColor) && (canClear || canDelete);
     const color = cal.color || "#3b82f6";
 
     return (
@@ -341,13 +335,6 @@ export function CalendarSidebarPanel({
             </div>
           </ContextMenuSubMenu>
         )}
-        {canResetColor && (
-          <ContextMenuItem
-            icon={Shuffle}
-            label={tMgmt('random_color')}
-            onClick={() => { closeContextMenu(); onResetColor!(cal); }}
-          />
-        )}
         {showSeparator && <ContextMenuSeparator />}
         {canClear && (
           <ContextMenuItem

components/calendar/event-card.tsx

@@ -34,11 +34,6 @@ function sanitizeColor(color: string | null | undefined, fallback = "#3b82f6"):
 }
 
 function getEventColor(event: CalendarEvent, calendar?: Calendar): string {
-  // A local color override on a shared calendar wins over per-event colors,
-  // so the whole shared calendar paints uniformly in the viewer's chosen hue.
-  if (calendar?.colorIsLocalOverride && calendar.color) {
-    return sanitizeColor(calendar.color);
-  }
   return sanitizeColor(event.color, sanitizeColor(calendar?.color));
 }
 

components/email/email-composer.tsx

@@ -5,14 +5,11 @@ import { useFocusTrap } from "@/hooks/use-focus-trap";
 import { useTranslations } from "next-intl";
 import { Button } from "@/components/ui/button";
 import { Input } from "@/components/ui/input";
-import { X, Paperclip, Send, Save, Check, Loader2, AlertCircle, FileText, BookmarkPlus, ShieldCheck, Lock, CalendarClock, ChevronDown, MailCheck } from "lucide-react";
+import { X, Paperclip, Send, Save, Check, Loader2, AlertCircle, FileText, BookmarkPlus, ShieldCheck, Lock, CalendarClock, ChevronDown } from "lucide-react";
 import { cn, formatFileSize, formatDateTime, generateUUID } from "@/lib/utils";
 import { debug } from "@/lib/debug";
 import { toast } from "@/stores/toast-store";
-import { sanitizeSignatureHtml, sanitizeEmailHtml } from "@/lib/email-sanitization";
-import { buildReplySubject, buildForwardSubject } from "@/lib/subject-prefix";
-import { isFilePreviewable } from "@/lib/file-preview";
-import { buildQuotedHtmlBlock, serializeEditorContent } from "@/components/email/quoted-html";
+import { sanitizeSignatureHtml } from "@/lib/email-sanitization";
 import { emailHooks, contactHooks } from "@/lib/plugin-hooks";
 import type { OutgoingEmail, RecipientSuggestion } from "@/lib/plugin-types";
 import { useAuthStore } from "@/stores/auth-store";
@@ -26,7 +23,6 @@ import { buildMimeMessage, wrapCmsAsSmimeMessage } from "@/lib/smime/mime-builde
 import type { MimeAttachment } from "@/lib/smime/mime-builder";
 import { smimeSign } from "@/lib/smime/smime-sign";
 import { PluginSlot } from "@/components/plugins/plugin-slot";
-import { FilePreviewModal } from "@/components/files/file-preview-modal";
 import { smimeEncrypt } from "@/lib/smime/smime-encrypt";
 import { useContactStore } from "@/stores/contact-store";
 import { useTemplateStore } from "@/stores/template-store";
@@ -93,7 +89,6 @@ interface EmailComposerProps {
     inReplyTo?: string[];
     references?: string[];
     delayedUntil?: string;
-    requestReadReceipt?: boolean;
   }) => void | Promise<void>;
   onScheduledSendCreated?: () => void | Promise<void>;
   onClose?: () => void;
@@ -201,7 +196,6 @@ export function EmailComposer({
 }: EmailComposerProps) {
   const t = useTranslations('email_composer');
   const tCommon = useTranslations('common');
-  const tQuote = useTranslations('quote_header');
   const timeFormat = useSettingsStore((state) => state.timeFormat);
   const plainTextMode = useSettingsStore((state) => state.plainTextMode);
   const subAddressDelimiter = useSettingsStore((state) => state.subAddressDelimiter);
@@ -211,7 +205,6 @@ export function EmailComposer({
   const sendDelaySeconds = useSettingsStore((state) => state.sendDelaySeconds);
   const signaturePosition = useSettingsStore((state) => state.signaturePosition);
   const signatureSeparatorEnabled = useSettingsStore((state) => state.signatureSeparatorEnabled);
-  const requestReadReceiptDefault = useSettingsStore((state) => state.requestReadReceiptDefault);
   const activeIdentities = useIdentityStore((s) => s.identities);
   // Pro shell: surface identities from every connected account, grouped
   // for the From dropdown's <optgroup>s. Outside Pro this collapses to
@@ -235,16 +228,10 @@ export function EmailComposer({
   const initialSignatureIdentity = (initialCurrentIdentityForSig?.htmlSignature || initialCurrentIdentityForSig?.textSignature)
     ? initialCurrentIdentityForSig
     : primaryIdentity;
-  const hasInitialSignature = !!(initialSignatureIdentity?.htmlSignature || initialSignatureIdentity?.textSignature);
   const shouldEmbedSignatureAboveQuote =
     (mode === 'reply' || mode === 'replyAll' || mode === 'forward') &&
     signaturePosition === 'above_quote' &&
-    hasInitialSignature;
-  // New-mail composes always embed the signature into the editor body so it's
-  // editable/removable (the previous read-only preview below the editor was
-  // never spec-correct - see #329). Compose mode also ignores any leftover
-  // `replyTo` from a still-selected email; getInitialBody short-circuits below.
-  const shouldEmbedSignatureInNewMail = mode === 'compose' && hasInitialSignature;
+    !!(initialSignatureIdentity?.htmlSignature || initialSignatureIdentity?.textSignature);
 
   // Initialize with reply/forward data if provided
   const getInitialTo = () => {
@@ -272,9 +259,11 @@ export function EmailComposer({
   const getInitialSubject = () => {
     if (!replyTo?.subject) return "";
     if (mode === 'forward') {
-      return buildForwardSubject(replyTo.subject, t('prefix.forward'));
+      const fwdPrefix = t('prefix.forward');
+      return `${fwdPrefix} ${replyTo.subject.replace(/^(Fwd:\s*|Tr:\s*)+/i, '')}`;
     } else if (mode === 'reply' || mode === 'replyAll') {
-      return buildReplySubject(replyTo.subject, t('prefix.reply'));
+      const rePrefix = t('prefix.reply');
+      return `${rePrefix} ${replyTo.subject.replace(/^(Re:\s*)+/i, '')}`;
     }
     return "";
   };
@@ -283,26 +272,11 @@ export function EmailComposer({
     if (plainTextMode) {
       // Plain text mode: produce plain text body with no HTML
       const prefix = initialDraftText || "";
-      // Compose mode: ignore any leftover replyTo (e.g. a selected mail in the
-      // viewer) and embed the signature directly into the body so it's
-      // editable. Fixes #329 (A,B).
-      if (mode === 'compose') {
-        if (!shouldEmbedSignatureInNewMail) return prefix;
-        const sep = signatureSeparatorEnabled ? '\n\n-- \n' : '\n\n';
-        return `${prefix}${sep}${getPlainTextSignature(initialSignatureIdentity)}`;
-      }
       if (!replyTo?.body && !replyTo?.htmlBody) return prefix;
 
       const date = replyTo.receivedAt ? formatDateTime(replyTo.receivedAt, timeFormat, { weekday: 'short', year: 'numeric', month: 'short', day: 'numeric' }) : "";
       const from = replyTo.from?.[0];
       const fromStr = from ? `${from.name || from.email}` : tCommon('unknown');
-      // Forward "From:" shows the full sender incl. address; reply line keeps
-      // the bare name (reads naturally in the localized "On … wrote:" line).
-      const fromStrFull = from
-        ? (from.name && from.email && from.name !== from.email
-            ? `${from.name} <${from.email}>`
-            : (from.email || from.name || tCommon('unknown')))
-        : tCommon('unknown');
 
       const originalText = replyTo.body || (replyTo.htmlBody ? htmlToPlainText(replyTo.htmlBody) : '');
       const quotedText = originalText.split('\n').map(line => `> ${line}`).join('\n');
@@ -323,36 +297,19 @@ export function EmailComposer({
       }
 
       if (mode === 'forward') {
-        return `${prefix}${signatureBlock}\n\n${tQuote('forwarded_separator')}\n${tQuote('from_label')}: ${fromStrFull}\n${tQuote('date_label')}: ${date}\n${tQuote('subject_label')}: ${replyTo.subject || ''}\n\n${originalText}`;
+        return `${prefix}${signatureBlock}\n\n---------- Forwarded message ----------\nFrom: ${fromStr}\nDate: ${date}\nSubject: ${replyTo.subject || ''}\n\n${originalText}`;
       } else if (mode === 'reply' || mode === 'replyAll') {
-        return `${prefix}${signatureBlock}\n\n${tQuote('reply_line', { date, from: fromStr })}\n${quotedText}`;
+        return `${prefix}${signatureBlock}\n\nOn ${date}, ${fromStr} wrote:\n${quotedText}`;
       }
       return prefix;
     }
 
     const prefix = initialDraftText ? `<p>${initialDraftText.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/\n/g, '<br>')}</p>` : "";
-    // Compose mode: ignore any leftover replyTo and embed the signature
-    // directly into the body so the user can edit/delete it. The leading
-    // empty paragraph gives the cursor a place to land above the signature.
-    if (mode === 'compose') {
-      if (!shouldEmbedSignatureInNewMail) return prefix;
-      const composePrefix = prefix || '<p></p>';
-      const embedded = buildEmbeddedSignatureHtml(initialSignatureIdentity, {
-        embed: true,
-        separator: signatureSeparatorEnabled,
-      });
-      return `${composePrefix}${embedded}`;
-    }
     if (!replyTo?.body && !replyTo?.htmlBody) return prefix;
 
     const date = replyTo.receivedAt ? formatDateTime(replyTo.receivedAt, timeFormat, { weekday: 'short', year: 'numeric', month: 'short', day: 'numeric' }) : "";
     const from = replyTo.from?.[0];
     const fromStr = from ? `${from.name || from.email}` : tCommon('unknown');
-    const fromStrFull = from
-      ? (from.name && from.email && from.name !== from.email
-          ? `${from.name} <${from.email}>`
-          : (from.email || from.name || tCommon('unknown')))
-      : tCommon('unknown');
 
     const signatureBlock = buildEmbeddedSignatureHtml(initialSignatureIdentity, {
       embed: shouldEmbedSignatureAboveQuote,
@@ -361,46 +318,35 @@ export function EmailComposer({
 
     // Plugin override (resolved at composer open via onBuildQuoteHeader).
     if (replyTo.quoteHeaderHtml !== undefined && (mode === 'reply' || mode === 'replyAll' || mode === 'forward')) {
-      if (replyTo.htmlBody) {
-        // Layout-heavy original: embed verbatim as a QuotedHtml island so
-        // nested tables / MJML survive 1:1 (sanitize strips scripts/styles
-        // first; cid rewrite runs after so its data-cid markers survive).
-        const island = buildQuotedHtmlBlock(
-          rewriteCidImagesForEditor(sanitizeEmailHtml(replyTo.htmlBody))
-        );
-        return `${prefix}${signatureBlock}<br>${replyTo.quoteHeaderHtml}${island}`;
-      }
-      const escaped = replyTo.body
-        ? replyTo.body.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/\n/g, '<br>')
-        : '';
       const wrap = replyTo.quoteWrapInBlockquote !== false;
+      const originalHtml = replyTo.htmlBody
+        ? rewriteCidImagesForEditor(replyTo.htmlBody)
+        : (replyTo.body
+          ? replyTo.body.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/\n/g, '<br>')
+          : '');
       const bodyHtml = wrap
-        ? `<blockquote style="margin:0 0 0 0.8ex;border-left:2px solid #ccc;padding-left:1ex">${escaped}</blockquote>`
-        : escaped;
+        ? `<blockquote style="margin:0 0 0 0.8ex;border-left:2px solid #ccc;padding-left:1ex">${originalHtml}</blockquote>`
+        : originalHtml;
       return `${prefix}${signatureBlock}<br>${replyTo.quoteHeaderHtml}${bodyHtml}`;
     }
 
     // Build quoted content as HTML
     if (replyTo.htmlBody && (mode === 'reply' || mode === 'replyAll' || mode === 'forward')) {
       const quoteHeader = mode === 'forward'
-        ? `${tQuote('forwarded_separator')}<br>${tQuote('from_label')}: ${fromStrFull}<br>${tQuote('date_label')}: ${date}<br>${tQuote('subject_label')}: ${replyTo.subject || ''}<br><br>`
-        : `${tQuote('reply_line', { date, from: fromStr })}<br>`;
-      // Embed the original as a QuotedHtml island (verbatim, schema-free) so
-      // its layout survives the editor round-trip. Sanitize first to strip
-      // scripts/styles/head; cid rewrite afterwards so data-cid markers
-      // aren't dropped by the sanitizer's ALLOW_DATA_ATTR:false.
-      const island = buildQuotedHtmlBlock(
-        rewriteCidImagesForEditor(sanitizeEmailHtml(replyTo.htmlBody))
-      );
-      return `${prefix}${signatureBlock}<br><div>${quoteHeader}</div>${island}`;
+        ? `---------- Forwarded message ----------<br>From: ${fromStr}<br>Date: ${date}<br>Subject: ${replyTo.subject || ''}<br><br>`
+        : `On ${date}, ${fromStr} wrote:<br>`;
+      // cid: image refs are rewritten so they render in the editor (browsers
+      // can't fetch cid: URLs); see useEffect below for the data-URL backfill.
+      const quotedHtml = rewriteCidImagesForEditor(replyTo.htmlBody);
+      return `${prefix}${signatureBlock}<br><div>${quoteHeader}</div><blockquote style="margin:0 0 0 0.8ex;border-left:2px solid #ccc;padding-left:1ex">${quotedHtml}</blockquote>`;
     }
 
     if (replyTo.body) {
       const escapedOriginal = replyTo.body.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/\n/g, '<br>');
       if (mode === 'forward') {
-        return `${prefix}${signatureBlock}<br><br>${tQuote('forwarded_separator')}<br>${tQuote('from_label')}: ${fromStrFull}<br>${tQuote('date_label')}: ${date}<br>${tQuote('subject_label')}: ${replyTo.subject || ''}<br><br>${escapedOriginal}`;
+        return `${prefix}${signatureBlock}<br><br>---------- Forwarded message ----------<br>From: ${fromStr}<br>Date: ${date}<br>Subject: ${replyTo.subject || ''}<br><br>${escapedOriginal}`;
       } else if (mode === 'reply' || mode === 'replyAll') {
-        return `${prefix}${signatureBlock}<br><br>${tQuote('reply_line', { date, from: fromStr })}<br><blockquote style="margin:0 0 0 0.8ex;border-left:2px solid #ccc;padding-left:1ex">${escapedOriginal}</blockquote>`;
+        return `${prefix}${signatureBlock}<br><br>On ${date}, ${fromStr} wrote:<br><blockquote style="margin:0 0 0 0.8ex;border-left:2px solid #ccc;padding-left:1ex">${escapedOriginal}</blockquote>`;
       }
     }
     return prefix;
@@ -413,7 +359,6 @@ export function EmailComposer({
   const [body, setBody] = useState(initialData?.body ?? getInitialBody());
   const [showCc, setShowCc] = useState(initialData?.showCc ?? !!getInitialCc());
   const [showBcc, setShowBcc] = useState(initialData?.showBcc ?? false);
-  const [requestReadReceipt, setRequestReadReceipt] = useState(requestReadReceiptDefault);
   const [draftId, setDraftId] = useState<string | null>(initialData?.draftId ?? null);
   // Mirror of draftId for synchronous reads inside chained saves; React's
   // setDraftId is async, so a queued saveDraft would otherwise see the old
@@ -454,7 +399,6 @@ export function EmailComposer({
   const [showSaveAsTemplate, setShowSaveAsTemplate] = useState(false);
   const [showCloseDialog, setShowCloseDialog] = useState(false);
   const [showAllAttachments, setShowAllAttachments] = useState(false);
-  const [previewAttachment, setPreviewAttachment] = useState<ComposerAttachment | null>(null);
   const [smimeSign_, setSmimeSign] = useState(false);
   const [smimeEncrypt_, setSmimeEncrypt] = useState(false);
   const [smimePassphrasePrompt, setSmimePassphrasePrompt] = useState<{ keyId: string; resolve: (passphrase: string) => void; reject: () => void } | null>(null);
@@ -527,15 +471,10 @@ export function EmailComposer({
     if (!editor) return;
     if (!identityChanged && !separatorChanged) return;
     if (plainTextMode) return;
-    // Replies/forwards only embed when configured for "above quote". Compose
-    // always embeds (see getInitialBody), so swap on identity change there too.
-    const isReplyLike = mode === 'reply' || mode === 'replyAll' || mode === 'forward';
-    if (!isReplyLike && mode !== 'compose') return;
-    if (isReplyLike && signaturePosition !== 'above_quote') return;
+    if (mode !== 'reply' && mode !== 'replyAll' && mode !== 'forward') return;
+    if (signaturePosition !== 'above_quote') return;
 
-    // serializeEditorContent (not getHTML) so a QuotedHtml island's verbatim
-    // body isn't lost during the signature splice + setContent round-trip.
-    const currentHtml = serializeEditorContent(editor);
+    const currentHtml = editor.getHTML();
     const doc = new DOMParser().parseFromString(currentHtml, 'text/html');
     const startEl = doc.querySelector('[data-signature-block="separator"], [data-signature-block="start"]');
     if (!startEl) return;
@@ -557,23 +496,15 @@ export function EmailComposer({
     if (!parent) return;
 
     // Remove the existing signature range [startEl … endEl] inclusive, or
-    // from startEl to the next quote boundary if no end marker is present.
-    // The quote boundary is either a legacy <blockquote> or the QuotedHtml
-    // island wrapper (<div data-quoted-html>) - stop before either so the
-    // signature splice never eats into the quoted body.
+    // from startEl to the next blockquote if no end marker is present.
     const removeUntil = endEl && endEl.parentNode === parent ? endEl : null;
-    const isQuoteBoundary = (n: Node | null): boolean => {
-      if (!n || n.nodeType !== 1) return false;
-      const el = n as Element;
-      return el.tagName === 'BLOCKQUOTE' || el.hasAttribute('data-quoted-html');
-    };
     const toRemove: Node[] = [];
     let cursor: Node | null = startEl;
     while (cursor) {
       toRemove.push(cursor);
       if (cursor === removeUntil) break;
       const next: Node | null = cursor.nextSibling;
-      if (!removeUntil && isQuoteBoundary(next)) break;
+      if (!removeUntil && next && (next as Element).tagName === 'BLOCKQUOTE') break;
       cursor = next;
     }
     const insertBefore = toRemove[toRemove.length - 1]?.nextSibling ?? null;
@@ -772,16 +703,9 @@ export function EmailComposer({
   // Ref to latest saveDraft for use in event handlers with stale closures
   const saveDraftRef = useRef<() => Promise<string | null>>(() => Promise.resolve(null));
 
-  // Set by the explicit close paths (clean close, save-and-close, discard) so
-  // the unmount auto-save below doesn't fire and stash a stale pendingDraft
-  // on the parent (#329 D). Without this, "Reply → Discard → New mail" would
-  // open the next composer with the discarded reply's mode/replyTo.
-  const explicitCloseRef = useRef(false);
-
   // Auto-save state on unmount (when user navigates away without explicitly closing)
   useEffect(() => {
     return () => {
-      if (explicitCloseRef.current) return;
       if (onSaveState && isDirtyRef.current) {
         const s = stateRef.current;
         onSaveState({
@@ -1126,43 +1050,6 @@ export function EmailComposer({
     setAttachments(prev => prev.filter((_, i) => i !== index));
   };
 
-  // Inline preview for composer attachments, reusing the message viewer's
-  // FilePreviewModal (so previewability and the open-in-new-tab safety gate are
-  // handled there). Prefer the local File - no network - and fall back to the
-  // uploaded blob (forwarded attachments, which carry only a blobId).
-  const getPreviewAttachmentContent = useCallback(async () => {
-    if (!previewAttachment) throw new Error('No attachment selected');
-    if (previewAttachment.file) {
-      return {
-        blob: previewAttachment.file,
-        contentType: previewAttachment.type || previewAttachment.file.type || 'application/octet-stream',
-      };
-    }
-    if (composerClient && previewAttachment.blobId) {
-      const blob = await composerClient.fetchBlob(previewAttachment.blobId, previewAttachment.name, previewAttachment.type);
-      return { blob, contentType: previewAttachment.type || blob.type || 'application/octet-stream' };
-    }
-    throw new Error('No attachment content available');
-  }, [previewAttachment, composerClient]);
-
-  const handlePreviewAttachmentDownload = useCallback(async () => {
-    if (!previewAttachment) return;
-    if (previewAttachment.file) {
-      const url = URL.createObjectURL(previewAttachment.file);
-      const a = document.createElement('a');
-      a.href = url;
-      a.download = previewAttachment.name;
-      document.body.appendChild(a);
-      a.click();
-      document.body.removeChild(a);
-      URL.revokeObjectURL(url);
-      return;
-    }
-    if (composerClient && previewAttachment.blobId) {
-      await composerClient.downloadBlob(previewAttachment.blobId, previewAttachment.name, previewAttachment.type);
-    }
-  }, [previewAttachment, composerClient]);
-
   // Auto-save draft functionality
   const saveDraftOnce = async (): Promise<string | null> => {
     if (!client || !composerClient) return null;
@@ -1485,14 +1372,12 @@ export function EmailComposer({
     const envelopeMailFrom = overrideActive ? identityFromEmail : undefined;
 
     // Body is already HTML from the rich text editor (or plain text in plain text mode).
-    // The signature is embedded into the body during init for compose mode
-    // (when the initial identity had a signature) and for above-quote
-    // replies/forwards - skip the trailing append in those cases so we don't
-    // duplicate it.
+    // When "above quote" mode is configured for replies/forwards, the signature
+    // was embedded into the body during init (see getInitialBody) so the
+    // trailing append must be skipped to avoid duplicating it.
     const signatureAlreadyInBody =
-      shouldEmbedSignatureInNewMail ||
-      ((mode === 'reply' || mode === 'replyAll' || mode === 'forward') &&
-        signaturePosition === 'above_quote');
+      (mode === 'reply' || mode === 'replyAll' || mode === 'forward') &&
+      signaturePosition === 'above_quote';
 
     // Build HTML signature block (used only in rich text mode)
     const buildSignatureHtml = (): string => {
@@ -1734,7 +1619,6 @@ export function EmailComposer({
           attachments: uploadedAttachments.length > 0 ? uploadedAttachments : undefined,
           inReplyTo: threadingHeaders?.inReplyTo,
           references: threadingHeaders?.references,
-          requestReadReceipt,
           delayedUntil: effectiveDelayedUntil,
         });
 
@@ -1809,7 +1693,6 @@ export function EmailComposer({
   }, []);
 
   const cleanClose = () => {
-    explicitCloseRef.current = true;
     if (saveTimeoutRef.current) {
       clearTimeout(saveTimeoutRef.current);
     }
@@ -1818,7 +1701,6 @@ export function EmailComposer({
   };
 
   const handleSaveDraftAndClose = async () => {
-    explicitCloseRef.current = true;
     setShowCloseDialog(false);
     if (saveTimeoutRef.current) {
       clearTimeout(saveTimeoutRef.current);
@@ -1829,7 +1711,6 @@ export function EmailComposer({
   };
 
   const handleDiscardAndClose = () => {
-    explicitCloseRef.current = true;
     setShowCloseDialog(false);
     if (saveTimeoutRef.current) {
       clearTimeout(saveTimeoutRef.current);
@@ -2226,9 +2107,8 @@ export function EmailComposer({
         )}
 
         {/* Hide the visual signature preview when the signature has already been
-            embedded into the body (compose, or above-quote replies). */}
-        {(shouldEmbedSignatureInNewMail
-          || ((mode === 'reply' || mode === 'replyAll' || mode === 'forward') && signaturePosition === 'above_quote')) ? null
+            embedded into the body above the quote (otherwise it would appear twice). */}
+        {((mode === 'reply' || mode === 'replyAll' || mode === 'forward') && signaturePosition === 'above_quote') ? null
           : plainTextMode ? (
           getPlainTextSignature(signatureIdentity) ? (
             <div className="px-4 pb-3 text-sm leading-6 text-muted-foreground break-words whitespace-pre-wrap font-mono">
@@ -2247,21 +2127,7 @@ export function EmailComposer({
         {attachments.length > 0 && (
           <div className="px-4 py-2 border-t shrink-0">
             <div className="flex flex-wrap gap-2">
-              {(showAllAttachments ? attachments : attachments.slice(0, 3)).map((att, index) => {
-                // Clickable to preview only once it has content (local File or an
-                // uploaded blob) and the type is previewable; never mid-upload.
-                const canPreview = !att.uploading && !att.error
-                  && (!!att.file || !!att.blobId)
-                  && isFilePreviewable(att.name, att.type);
-                const label = (
-                  <>
-                    <span className="max-w-[150px] md:max-w-[200px] truncate">{att.name}</span>
-                    <span className="text-xs text-muted-foreground whitespace-nowrap">
-                      ({formatFileSize(att.size)})
-                    </span>
-                  </>
-                );
-                return (
+              {(showAllAttachments ? attachments : attachments.slice(0, 3)).map((att, index) => (
                 <div
                   key={index}
                   className={cn(
@@ -2283,18 +2149,10 @@ export function EmailComposer({
                     ) : (
                       <Paperclip className="w-3 h-3 flex-shrink-0" />
                     )}
-                    {canPreview ? (
-                      <button
-                        type="button"
-                        onClick={() => setPreviewAttachment(att)}
-                        title={att.name}
-                        className="flex items-center gap-2 min-w-0 hover:underline"
-                      >
-                        {label}
-                      </button>
-                    ) : (
-                      <div className="flex items-center gap-2 min-w-0">{label}</div>
-                    )}
+                    <span className="max-w-[150px] md:max-w-[200px] truncate">{att.name}</span>
+                    <span className="text-xs text-muted-foreground whitespace-nowrap">
+                      ({formatFileSize(att.size)})
+                    </span>
                     <button
                       onClick={() => removeAttachment(index)}
                       className="ml-1 hover:text-red-500 min-w-[20px] min-h-[20px] flex items-center justify-center"
@@ -2304,8 +2162,7 @@ export function EmailComposer({
                     </button>
                   </div>
                 </div>
-                );
-              })}
+              ))}
               {attachments.length > 3 && (
                 <button
                   onClick={() => setShowAllAttachments(prev => !prev)}
@@ -2319,7 +2176,7 @@ export function EmailComposer({
         )}
 
         {/* Bottom toolbar */}
-        <div className="flex items-center justify-between px-4 py-2.5 border-t bg-background shrink-0 pb-[calc(0.625rem+env(safe-area-inset-bottom)/2)]">
+        <div className="flex items-center justify-between px-4 py-2.5 border-t bg-background shrink-0 pb-[calc(env(safe-area-inset-bottom)/2)]">
           {/* Left side actions */}
           <div className="flex items-center gap-1">
             <input
@@ -2382,21 +2239,6 @@ export function EmailComposer({
                 </Button>
               </>
             )}
-
-            {/* Read-receipt request toggle */}
-            <Button
-              variant="ghost"
-              size="icon"
-              onClick={() => setRequestReadReceipt(v => !v)}
-              className={cn(
-                "h-9 w-9",
-                requestReadReceipt && "bg-green-600 text-white hover:bg-green-600 hover:text-white dark:bg-green-600 dark:hover:bg-green-600"
-              )}
-              title={requestReadReceipt ? t('read_receipt_on') : t('read_receipt_off')}
-              aria-pressed={requestReadReceipt}
-            >
-              <MailCheck className="w-4 h-4" />
-            </Button>
             <PluginSlot name="composer-toolbar" />
           </div>
 
@@ -2635,15 +2477,6 @@ export function EmailComposer({
           </div>
         </div>
       )}
-
-      {previewAttachment && (
-        <FilePreviewModal
-          name={previewAttachment.name}
-          onClose={() => setPreviewAttachment(null)}
-          onDownload={handlePreviewAttachmentDownload}
-          getFileContent={getPreviewAttachmentContent}
-        />
-      )}
     </div>
       <PluginSlot
         name="composer-sidebar-right"

components/email/email-identity-badge.tsx

@@ -5,7 +5,6 @@ import { Mail, Tag } from 'lucide-react';
 import { cn } from '@/lib/utils';
 import type { Email, Identity } from '@/lib/jmap/types';
 import { parseSubAddress } from '@/lib/sub-addressing';
-import { isAuthenticationSpoofed } from '@/lib/email-headers';
 import { useSettingsStore } from '@/stores/settings-store';
 
 interface EmailIdentityBadgeProps {
@@ -30,17 +29,10 @@ export function EmailIdentityBadge({
   // Parse the from address to check for sub-addressing
   const parsedFrom = parseSubAddress(fromAddress, subAddressDelimiter);
 
-  // Find matching identity (email sent BY the user). When the message is
-  // likely spoofed, the From address can't be trusted, so we ignore any
-  // identity match — otherwise a forged From matching one of the user's own
-  // addresses would render a misleading "via <identity>" badge that implies
-  // legitimacy.
-  const spoofed = isAuthenticationSpoofed(email.authenticationResults);
-  const matchingIdentity = spoofed
-    ? undefined
-    : identities.find(
-        (identity) => identity.email === fromAddress || identity.email === `${parsedFrom.baseUser}@${parsedFrom.domain}`
-      );
+  // Find matching identity (email sent BY the user)
+  const matchingIdentity = identities.find(
+    (identity) => identity.email === fromAddress || identity.email === `${parsedFrom.baseUser}@${parsedFrom.domain}`
+  );
 
   // Check if email was sent TO a sub-address (received email)
   let receivedToTag: string | null = null;

components/email/email-viewer.tsx

@@ -83,8 +83,6 @@ import { useThemeStore } from "@/stores/theme-store";
 import { EmailIdentityBadge } from "./email-identity-badge";
 import { UnsubscribeBanner } from "./unsubscribe-banner";
 import { CalendarInvitationBanner } from "./calendar-invitation-banner";
-import { ReadReceiptBanner } from "./read-receipt-banner";
-import { stripCrossAccountIdentityPrefix } from "@/hooks/use-pro-multi-account-identities";
 import { useTour } from "@/components/tour/tour-provider";
 import { useIsEmbedded } from "@/hooks/use-is-embedded";
 import { SmimePassphraseDialog } from "@/components/settings/smime-passphrase-dialog";
@@ -913,7 +911,6 @@ export function EmailViewer({
   const showToolbarLabels = useSettingsStore((state) => state.showToolbarLabels);
   const mailLayout = useSettingsStore((state) => state.mailLayout);
   const calendarInvitationParsingEnabled = useSettingsStore((state) => state.calendarInvitationParsingEnabled);
-  const readReceiptResponse = useSettingsStore((state) => state.readReceiptResponse);
   const hideInlineImageAttachments = useSettingsStore((state) => state.hideInlineImageAttachments);
   const attachmentImagePreviewsEnabled = useSettingsStore((state) => state.attachmentImagePreviewsEnabled);
   const dragOutActive = useMemo(() => isDragOutSupported(), []);
@@ -2196,9 +2193,6 @@ export function EmailViewer({
       // Hide inline cid-referenced images when the user has opted to keep them
       // out of the attachment list (default on): these are embedded in the body.
       .filter(att => !(hideInlineImageAttachments && att.cid && att.disposition === 'inline' && (att.type || '').startsWith('image/')))
-      // Hide machine-readable report parts (MDN read-receipts, DSN bounce
-      // reports). These are required MIME parts, not real user attachments.
-      .filter(att => att.type !== 'message/disposition-notification' && att.type !== 'message/delivery-status')
       .map((attachment, index) => ({
         id: attachment.blobId || `${attachment.name || 'attachment'}-${index}`,
         name: attachment.name || null,
@@ -2899,10 +2893,7 @@ export function EmailViewer({
 <html style="color-scheme: ${colorScheme};"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1">
 <meta http-equiv="Content-Security-Policy" content="${iframeCsp}">
 <style>
-  /* Force content height: some emails set html/body { height: 100% }, which -
-     combined with overflow:hidden and our scrollHeight-based auto-resize -
-     collapses the measured height and clips everything below the fold. */
-  html, body { overflow: hidden; height: auto !important; }
+  html, body { overflow: hidden; }
   body { margin: 0; padding: ${bodyPadding}; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; font-size: 14px; line-height: 1.6; color: #1a1a1a; background: #ffffff; word-wrap: break-word; overflow-wrap: break-word; }
   @media (max-width: 640px) { body { padding-left: ${mobileBodyPaddingX}; padding-right: ${mobileBodyPaddingX}; } }
   img { max-width: 100% !important; height: auto !important; }
@@ -3261,103 +3252,6 @@ export function EmailViewer({
     ? calendarInvitationParsingEnabled && !!findCalendarAttachment(email)
     : false;
 
-  // ── Read receipt (MDN, RFC 8098) ──────────────────────────────
-  // Detect a Disposition-Notification-To request on the open message. The
-  // header is parsed into email.headers by the client; look it up
-  // case-insensitively and extract the bare address.
-  const readReceiptRequestedBy = useMemo(() => {
-    const headers = email?.headers as Record<string, string | string[]> | undefined;
-    if (!headers) return null;
-    let raw: string | undefined;
-    for (const key of Object.keys(headers)) {
-      if (key.toLowerCase() === 'disposition-notification-to') {
-        const v = headers[key];
-        raw = Array.isArray(v) ? v[0] : v;
-        break;
-      }
-    }
-    if (!raw) return null;
-    const m = raw.match(/<([^>]+)>/);
-    const addr = (m ? m[1] : raw).trim();
-    return addr || null;
-  }, [email?.headers]);
-
-  // The identity whose address received the original message — the MDN is sent
-  // "from" that address. Falls back to the primary identity.
-  const receiptIdentity = useMemo(() => {
-    if (!identities?.length) return null;
-    const recipients = [...(email?.to || []), ...(email?.cc || [])]
-      .map(r => r.email?.toLowerCase())
-      .filter(Boolean);
-    return identities.find(i => recipients.includes(i.email?.toLowerCase())) || identities[0];
-  }, [identities, email?.to, email?.cc]);
-
-  const mdnAlreadyHandled = email?.keywords?.['$mdnsent'] === true;
-  const [mdnHandledLocally, setMdnHandledLocally] = useState(false);
-  useEffect(() => { setMdnHandledLocally(false); }, [email?.id]);
-
-  // Only offer the receipt for mail you're actually reading in a "received"
-  // location. Suppress your own copies (sent/drafts), discarded mail (trash),
-  // and spam (junk) - never confirm your address to spammers. Inbox, Archive
-  // and user folders all qualify.
-  const inReceiptEligibleFolder = !['sent', 'drafts', 'trash', 'junk'].includes(currentMailboxRole || '');
-
-  const shouldOfferReadReceipt =
-    !!readReceiptRequestedBy &&
-    !mdnAlreadyHandled &&
-    !mdnHandledLocally &&
-    readReceiptResponse !== 'never' &&
-    inReceiptEligibleFolder &&
-    !isDraft &&
-    !!receiptIdentity;
-
-  const sendReadReceiptNow = useCallback(async (automatic: boolean) => {
-    if (!client || !email || !readReceiptRequestedBy || !receiptIdentity) return;
-    const { rawId } = stripCrossAccountIdentityPrefix(receiptIdentity.id);
-    try {
-      await client.sendReadReceipt({
-        to: readReceiptRequestedBy,
-        fromEmail: receiptIdentity.email,
-        fromName: receiptIdentity.name,
-        identityId: rawId ?? receiptIdentity.id,
-        originalMessageId: email.messageId,
-        originalSubject: email.subject,
-        originalRecipient: receiptIdentity.email,
-        automatic,
-        subject: t('read_receipt.mdn_subject', { subject: email.subject || '' }),
-        humanText: t('read_receipt.mdn_body', { recipient: receiptIdentity.email }),
-      });
-      await client.setKeyword(email.id, '$mdnsent');
-    } catch (err) {
-      // Surface the failure instead of silently resetting the banner so we can
-      // see which step (upload / import / submission) failed.
-      console.error('Read-receipt (MDN) send failed:', err);
-      toast.error(t('read_receipt.send_failed'), {
-        message: err instanceof Error ? err.message : String(err),
-      });
-      throw err;
-    }
-  }, [client, email, readReceiptRequestedBy, receiptIdentity, t]);
-
-  const ignoreReadReceipt = useCallback(async () => {
-    setMdnHandledLocally(true);
-    if (client && email) {
-      // $MDNSent is the RFC 3503 flag every IMAP/JMAP client honours, so the
-      // request is suppressed everywhere - not just locally.
-      try { await client.setKeyword(email.id, '$mdnsent'); } catch { /* best effort */ }
-    }
-  }, [client, email]);
-
-  // "always" mode: auto-send the MDN once when the message is opened.
-  const autoMdnRef = useRef<string | null>(null);
-  useEffect(() => {
-    if (readReceiptResponse !== 'always') return;
-    if (!shouldOfferReadReceipt || !email) return;
-    if (autoMdnRef.current === email.id) return;
-    autoMdnRef.current = email.id;
-    sendReadReceiptNow(true).catch(() => { autoMdnRef.current = null; });
-  }, [readReceiptResponse, shouldOfferReadReceipt, email?.id, sendReadReceiptNow]);
-
   // Show loading skeleton while email is being fetched
   if (isLoading && !email) {
     return (
@@ -4226,8 +4120,8 @@ export function EmailViewer({
           "bg-background border-b border-border",
           "max-lg:sticky max-lg:top-0 max-lg:z-10"
         )}>
-          <div className="px-2 sm:px-4 lg:px-6 h-14 flex items-center">
-            <div ref={toolbarRef} className="flex items-center justify-between gap-0.5 sm:gap-2 w-full">
+          <div className="px-2 sm:px-4 lg:px-6 py-1 sm:py-2">
+            <div ref={toolbarRef} className="flex items-center justify-between gap-0.5 sm:gap-2">
               {renderToolbarItems(true)}
             </div>
           </div>
@@ -4817,27 +4711,9 @@ export function EmailViewer({
                   <section className="min-w-0">
                     <SectionHeader>{t('details.authentication_security')}</SectionHeader>
                     <div className="flex flex-wrap gap-1.5">
-                      {auth?.spf && (() => {
-                        // When multiple identities (HELO + MAIL FROM) were
-                        // evaluated, list each result in the tooltip for full
-                        // transparency; the chip itself shows the most severe.
-                        const breakdown = auth.spf.all && auth.spf.all.length > 1
-                          ? auth.spf.all
-                              .map((r) => {
-                                const label = r.identity === 'mailfrom' ? 'MAIL FROM' : r.identity === 'helo' ? 'HELO' : 'SPF';
-                                return `${label}: ${translateAuthResult(r.result)}${r.domain ? ` (${r.domain})` : ''}`;
-                              })
-                              .join('\n')
-                          : null;
-                        return (
-                          <AuthChip
-                            name="SPF"
-                            result={auth.spf.result}
-                            extra={auth.spf.domain}
-                            tooltip={breakdown ? `${t('authentication.tooltip_spf')}\n\n${breakdown}` : t('authentication.tooltip_spf')}
-                          />
-                        );
-                      })()}
+                      {auth?.spf && (
+                        <AuthChip name="SPF" result={auth.spf.result} extra={auth.spf.domain} tooltip={t('authentication.tooltip_spf')} />
+                      )}
                       {auth?.dkim && (
                         <AuthChip name="DKIM" result={auth.dkim.result} extra={auth.dkim.domain} tooltip={t('authentication.tooltip_dkim')} />
                       )}
@@ -5070,10 +4946,9 @@ export function EmailViewer({
           error={smimeUnlockError}
         />
 
-        {/* Unified Notification Banner - External Content + Calendar Invitation + Read Receipt */}
+        {/* Unified Notification Banner - External Content + Calendar Invitation */}
         {((hasBlockedContent && !allowExternalContent && externalContentPolicy !== 'allow') ||
-          hasCalendarInvitation ||
-          (readReceiptResponse === 'ask' && shouldOfferReadReceipt)) && (
+          hasCalendarInvitation) && (
           <div className="border-b border-border bg-muted/30 isolate">
             <div className="px-6 py-1.5">
               <div className="flex flex-col gap-3 isolate">
@@ -5128,17 +5003,6 @@ export function EmailViewer({
 
 
 
-                {/* Read-receipt (MDN) request banner — only in "ask" mode */}
-                {readReceiptResponse === 'ask' && shouldOfferReadReceipt && readReceiptRequestedBy && (
-                  <div className="py-1">
-                    <ReadReceiptBanner
-                      requestedBy={readReceiptRequestedBy}
-                      onSend={() => sendReadReceiptNow(false)}
-                      onIgnore={ignoreReadReceipt}
-                    />
-                  </div>
-                )}
-
                 {/* Calendar Invitation Banner */}
                 {hasCalendarInvitation && (
                   <div className="py-1">

components/email/quoted-html.ts

@@ -1,187 +0,0 @@
-"use client";
-
-import { Node as TiptapNode, mergeAttributes } from "@tiptap/core";
-import { DOMSerializer } from "@tiptap/pm/model";
-import type { Editor } from "@tiptap/react";
-
-// Marker attribute that identifies the quoted-original wrapper in serialized
-// HTML, so parseHTML can recognise it on the way back in.
-export const QUOTED_HTML_MARKER = "data-quoted-html";
-
-/**
- * QuotedHtml — an atomic block node that carries the *verbatim* HTML of a
- * quoted/forwarded original email. The HTML is stored in the `html` attribute
- * and is NEVER parsed into the ProseMirror schema, so layout-heavy emails
- * (nested tables, MJML, Outlook divs) survive a reply/forward 1:1.
- *
- * Behaviour:
- *  - To ProseMirror it's a single atomic block: Backspace at the boundary or
- *    Ctrl+A + Delete removes the whole quote in one go ("wie es sich gehört").
- *  - Its NodeView renders an inner `contentEditable` region so the user can
- *    still redact text inside the quote. Inner edits are synced back into the
- *    `html` attribute (without polluting the undo history).
- *
- * Serialization: ProseMirror's DOM serializer can't emit an atom's inner raw
- * HTML, so use `serializeEditorContent(editor)` (below) instead of
- * `editor.getHTML()` to read the composer body for sending/draft-saving.
- */
-export const QuotedHtml = TiptapNode.create({
-  name: "quotedHtml",
-  group: "block",
-  atom: true,
-  selectable: true,
-  draggable: false,
-  // Isolating keeps selection/gapcursor behaviour sane at the boundary.
-  isolating: true,
-
-  addAttributes() {
-    return {
-      html: {
-        default: "",
-        // Capture the verbatim inner HTML when parsing. Because the node is
-        // an atom, ProseMirror does NOT descend into the children, so they
-        // never hit the schema.
-        parseHTML: (el) => el.innerHTML,
-        // Not rendered as an attribute - the real content round-trips via the
-        // custom serializer. renderHTML below only needs the wrapper.
-        renderHTML: () => ({}),
-      },
-    };
-  },
-
-  parseHTML() {
-    return [{ tag: `div[${QUOTED_HTML_MARKER}]` }];
-  },
-
-  renderHTML({ HTMLAttributes }) {
-    // Only used for ProseMirror's internal/clipboard round-trip. The send /
-    // draft path uses serializeEditorContent() which inlines attrs.html.
-    return ["div", mergeAttributes(HTMLAttributes, { [QUOTED_HTML_MARKER]: "" })];
-  },
-
-  addNodeView() {
-    return ({ node, editor, getPos }) => {
-      // Host element ProseMirror manages. A subtle left border echoes the
-      // classic email quote bar without touching the quoted content's styling.
-      const dom = document.createElement("div");
-      dom.setAttribute(QUOTED_HTML_MARKER, "");
-      dom.className = "quoted-html-island";
-      dom.style.cssText =
-        "border-left:2px solid #c5c5c5;padding-left:12px;margin-top:8px;";
-
-      // CRITICAL: render the quoted email inside a Shadow Root. The app's
-      // global CSS (Tailwind preflight, .tiptap table/td rules, box-sizing
-      // resets) would otherwise cascade INTO the quote and destroy its layout
-      // - even though the verbatim HTML serializes/sends perfectly. Shadow DOM
-      // isolates both directions: only the browser's UA defaults + the email's
-      // own inline styles apply, so the in-editor rendering matches the sent
-      // mail 1:1.
-      const shadow = dom.attachShadow({ mode: "open" });
-      const inner = document.createElement("div");
-      inner.contentEditable = "true";
-      inner.style.cssText = "outline:none;";
-      inner.innerHTML = node.attrs.html || "";
-      shadow.appendChild(inner);
-
-      // Track focus via focusin/focusout: inside a shadow root,
-      // document.activeElement is retargeted to the host, so we can't rely on
-      // it to detect "is the user editing in here".
-      let focused = false;
-      inner.addEventListener("focusin", () => {
-        focused = true;
-      });
-      inner.addEventListener("focusout", () => {
-        focused = false;
-      });
-
-      // Sync inner edits back into the node attribute. Coalesced via rAF so a
-      // burst of keystrokes is one transaction; addToHistory:false keeps
-      // redaction edits out of the editor's undo stack. The `input` event is
-      // composed and crosses the shadow boundary, so this listener fires.
-      let frame = 0;
-      const syncBack = () => {
-        cancelAnimationFrame(frame);
-        frame = requestAnimationFrame(() => {
-          if (typeof getPos !== "function") return;
-          const pos = getPos();
-          if (pos == null) return;
-          const current = inner.innerHTML;
-          if (current === node.attrs.html) return;
-          editor.view.dispatch(
-            editor.view.state.tr
-              .setNodeAttribute(pos, "html", current)
-              .setMeta("addToHistory", false)
-          );
-        });
-      };
-      inner.addEventListener("input", syncBack);
-
-      return {
-        dom,
-        // ProseMirror must not try to reconcile the foreign shadow content.
-        ignoreMutation: () => true,
-        // Events originating inside the island are retargeted to the host
-        // (`dom`) once they cross the shadow boundary, so dom.contains(target)
-        // is true for them → let the native shadow contentEditable handle
-        // them. Events from the surrounding doc (boundary Backspace,
-        // Ctrl+A+Delete) target other elements → fall through to ProseMirror
-        // so whole-block deletion still works.
-        stopEvent: (event) => {
-          const target = event.target as Node | null;
-          return !!target && dom.contains(target);
-        },
-        update: (updatedNode) => {
-          if (updatedNode.type.name !== "quotedHtml") return false;
-          // Don't clobber the caret while the user is redacting inside.
-          if (!focused && inner.innerHTML !== updatedNode.attrs.html) {
-            inner.innerHTML = updatedNode.attrs.html || "";
-          }
-          return true;
-        },
-        destroy: () => {
-          cancelAnimationFrame(frame);
-          inner.removeEventListener("input", syncBack);
-        },
-      };
-    };
-  },
-});
-
-/**
- * Serialize the composer document to HTML for sending / draft-saving.
- *
- * Use this INSTEAD of `editor.getHTML()`: ProseMirror's DOM serializer cannot
- * emit the raw inner HTML of an atom node, so it would drop the quoted body.
- * Here we walk the top-level nodes, inline the quote node's verbatim `html`,
- * and serialize everything else normally.
- */
-export function serializeEditorContent(editor: Editor): string {
-  const serializer = DOMSerializer.fromSchema(editor.schema);
-  const parts: string[] = [];
-  editor.state.doc.forEach((node) => {
-    if (node.type.name === "quotedHtml") {
-      // Emit the SAME wrapper buildQuotedHtmlBlock produces, so a saved draft
-      // round-trips: re-opening parses this back into a QuotedHtml node
-      // instead of letting the schema mangle the raw table layout again.
-      parts.push(buildQuotedHtmlBlock((node.attrs.html as string) || ""));
-      return;
-    }
-    const fragment = serializer.serializeNode(node);
-    const tmp = document.createElement("div");
-    tmp.appendChild(fragment);
-    parts.push(tmp.innerHTML);
-  });
-  return parts.join("");
-}
-
-/**
- * Build the editor-content wrapper that the composer prepends/appends so the
- * quoted original becomes a single QuotedHtml node. The inner HTML must be
- * pre-sanitized (scripts/styles/head stripped, cid: images rewritten).
- *
- * The `data-quoted-html` marker is what parseHTML keys on, so this exact form
- * must be what serializeEditorContent emits too (round-trip consistency).
- */
-export function buildQuotedHtmlBlock(sanitizedInnerHtml: string): string {
-  return `<div ${QUOTED_HTML_MARKER}>${sanitizedInnerHtml}</div>`;
-}

components/email/read-receipt-banner.tsx

@@ -1,60 +0,0 @@
-'use client';
-
-import { useState } from 'react';
-import { MailCheck, Loader2, CheckCircle } from 'lucide-react';
-import { useTranslations } from 'next-intl';
-
-interface ReadReceiptBannerProps {
-  /** Address that requested the receipt (Disposition-Notification-To). */
-  requestedBy: string;
-  /** Sends the MDN. Should resolve when the receipt has been submitted. */
-  onSend: () => Promise<void>;
-  /** Suppresses the request without sending (sets $MDNSent server-side). */
-  onIgnore: () => void;
-}
-
-export function ReadReceiptBanner({ requestedBy, onSend, onIgnore }: ReadReceiptBannerProps) {
-  const t = useTranslations('email_viewer.read_receipt');
-  const [state, setState] = useState<'idle' | 'sending' | 'sent'>('idle');
-
-  if (state === 'sent') {
-    return (
-      <div className="flex items-center gap-2 rounded-md border border-border bg-muted/40 px-3 py-2 text-sm text-muted-foreground">
-        <CheckCircle className="w-4 h-4 text-green-600 dark:text-green-400 shrink-0" />
-        <span>{t('sent')}</span>
-      </div>
-    );
-  }
-
-  return (
-    <div className="flex flex-wrap items-center gap-2 rounded-md border border-amber-300/60 bg-amber-50 px-3 py-2 text-sm dark:border-amber-700/50 dark:bg-amber-950/30">
-      <MailCheck className="w-4 h-4 shrink-0 text-amber-600 dark:text-amber-400" />
-      <span className="text-foreground">{t('prompt')}</span>
-      <span className="break-all text-muted-foreground">{requestedBy}</span>
-      <div className="ml-auto flex items-center gap-2">
-        <button
-          onClick={async () => {
-            setState('sending');
-            try {
-              await onSend();
-              setState('sent');
-            } catch {
-              setState('idle');
-            }
-          }}
-          disabled={state === 'sending'}
-          className="inline-flex items-center gap-1.5 rounded-md bg-green-600 px-3 py-1.5 text-xs font-medium text-white transition-colors hover:bg-green-700 disabled:cursor-not-allowed disabled:opacity-50"
-        >
-          {state === 'sending' && <Loader2 className="w-3 h-3 animate-spin" />}
-          {t('send')}
-        </button>
-        <button
-          onClick={onIgnore}
-          className="rounded-md bg-red-600 px-3 py-1.5 text-xs font-medium text-white transition-colors hover:bg-red-700"
-        >
-          {t('ignore')}
-        </button>
-      </div>
-    </div>
-  );
-}

components/email/rich-text-editor.tsx

@@ -16,7 +16,6 @@ import { Table } from "@tiptap/extension-table";
 import { TableRow } from "@tiptap/extension-table-row";
 import { TableHeader } from "@tiptap/extension-table-header";
 import { TableCell } from "@tiptap/extension-table-cell";
-import { QuotedHtml, serializeEditorContent } from "@/components/email/quoted-html";
 import { cn } from "@/lib/utils";
 import {
   Bold,
@@ -232,9 +231,6 @@ export function RichTextEditor({
           style: "padding:6px 8px;border:1px solid #ccc;vertical-align:top;",
         },
       }),
-      // Quoted/forwarded original email body - held verbatim as an atomic
-      // node so layout-heavy HTML survives 1:1 (see quoted-html.ts).
-      QuotedHtml,
     ],
     content,
     editorProps: {
@@ -285,18 +281,14 @@ export function RichTextEditor({
       },
     },
     onUpdate: ({ editor }) => {
-      // serializeEditorContent (not getHTML) so the verbatim quoted-original
-      // HTML held in the QuotedHtml atom node is emitted intact.
-      onChange(serializeEditorContent(editor));
+      onChange(editor.getHTML());
     },
     immediatelyRender: false,
   });
 
-  // Sync external content changes (e.g. template application). Compare against
-  // the custom serialization so a doc that only differs inside a QuotedHtml
-  // island isn't needlessly re-parsed (which would reset the island DOM).
+  // Sync external content changes (e.g. template application)
   useEffect(() => {
-    if (editor && content !== serializeEditorContent(editor)) {
+    if (editor && content !== editor.getHTML()) {
       editor.commands.setContent(content, { emitUpdate: false });
     }
   }, [content, editor]);

components/files/eml-preview.tsx

@@ -1,110 +0,0 @@
-"use client";
-
-import { useTranslations } from "next-intl";
-import { Paperclip, Download } from "lucide-react";
-import { sanitizeEmailHtmlForIframe } from "@/lib/email-sanitization";
-
-// A parsed message/rfc822 (.eml), as produced by postal-mime. Only the fields
-// this preview renders are typed.
-export type ParsedEml = {
-  subject?: string;
-  from?: { name?: string; address?: string };
-  to?: Array<{ name?: string; address?: string }>;
-  date?: string;
-  html?: string;
-  text?: string;
-  attachments?: Array<{ filename?: string; mimeType?: string; content?: ArrayBuffer | Uint8Array }>;
-};
-
-function formatAddress(a?: { name?: string; address?: string }): string {
-  if (!a) return "";
-  if (a.name && a.address) return `${a.name} <${a.address}>`;
-  return a.address || a.name || "";
-}
-
-function escapeHtml(s: string): string {
-  return s
-    .replace(/&/g, "&amp;")
-    .replace(/</g, "&lt;")
-    .replace(/>/g, "&gt;")
-    .replace(/"/g, "&quot;")
-    .replace(/'/g, "&#39;");
-}
-
-// Renders a .eml attachment like an email: header (from/to/subject/date) + the
-// body, plus the message's own attachments. The body is sanitized with
-// DOMPurify AND rendered in a fully-locked sandbox iframe (sandbox="" - no
-// scripts, no same-origin), so a script-bearing .eml can never execute in our
-// origin. Parsing happens in the caller (FilePreviewModal); this is pure
-// presentation.
-export function EmlPreview({ message }: { message: ParsedEml }) {
-  const t = useTranslations("email_viewer");
-
-  const bodyDoc = message.html
-    ? sanitizeEmailHtmlForIframe(message.html)
-    : message.text
-      ? `<pre style="white-space:pre-wrap;word-break:break-word;font-family:ui-monospace,monospace;margin:0;padding:8px">${escapeHtml(message.text)}</pre>`
-      : "";
-
-  const downloadAttachment = (att: NonNullable<ParsedEml["attachments"]>[number]) => {
-    if (!att.content) return;
-    // content is a real ArrayBuffer/Uint8Array at runtime; cast for the strict
-    // BlobPart lib type (Uint8Array<ArrayBufferLike> vs ArrayBuffer).
-    const url = URL.createObjectURL(new Blob([att.content as BlobPart], { type: att.mimeType || "application/octet-stream" }));
-    const a = document.createElement("a");
-    a.href = url;
-    a.download = att.filename || "attachment";
-    document.body.appendChild(a);
-    a.click();
-    document.body.removeChild(a);
-    URL.revokeObjectURL(url);
-  };
-
-  return (
-    <div
-      className="w-full max-w-3xl max-h-full self-start overflow-auto rounded-lg border border-border bg-background shadow-2xl p-4"
-      onClick={(e) => e.stopPropagation()}
-    >
-      <h2 className="text-lg font-semibold text-foreground break-words">{message.subject || ""}</h2>
-      <div className="mt-2 space-y-0.5 text-sm text-muted-foreground border-b border-border pb-3">
-        {message.from && (
-          <div><span className="font-medium text-foreground">{t("from")}: </span>{formatAddress(message.from)}</div>
-        )}
-        {message.to && message.to.length > 0 && (
-          <div><span className="font-medium text-foreground">{t("to")}: </span>{message.to.map(formatAddress).join(", ")}</div>
-        )}
-        {message.date && (
-          <div><span className="font-medium text-foreground">{t("date")}: </span>{new Date(message.date).toLocaleString()}</div>
-        )}
-      </div>
-      {bodyDoc && (
-        <iframe
-          title={message.subject || "email"}
-          sandbox=""
-          srcDoc={bodyDoc}
-          className="w-full min-h-[55vh] mt-3 rounded bg-white"
-        />
-      )}
-      {message.attachments && message.attachments.length > 0 && (
-        <div className="mt-4 border-t border-border pt-3">
-          <div className="text-xs font-medium text-muted-foreground mb-2">{t("attachments")}</div>
-          <div className="flex flex-wrap gap-2">
-            {message.attachments.map((att, i) => (
-              <button
-                key={i}
-                type="button"
-                onClick={() => downloadAttachment(att)}
-                title={t("download")}
-                className="flex items-center gap-2 px-3 py-1.5 rounded-md text-sm bg-muted text-foreground hover:bg-muted/70"
-              >
-                <Paperclip className="w-3 h-3 flex-shrink-0" />
-                <span className="max-w-[200px] truncate">{att.filename || "attachment"}</span>
-                <Download className="w-3 h-3 flex-shrink-0 text-muted-foreground" />
-              </button>
-            ))}
-          </div>
-        </div>
-      )}
-    </div>
-  );
-}

components/files/file-preview-modal.tsx

@@ -1,48 +1,10 @@
 "use client";
 
-import { useState, useEffect, useRef } from "react";
+import { useState, useEffect } from "react";
 import { useTranslations } from "next-intl";
-import { X, Download, Loader2, ExternalLink } from "lucide-react";
+import { X, Download, Loader2 } from "lucide-react";
 import { Button } from "@/components/ui/button";
-import { getFilePreviewKind, isMimeTypeSafeForInlinePreview } from "@/lib/file-preview";
-import dynamic from "next/dynamic";
-import { EmlPreview, type ParsedEml } from "@/components/files/eml-preview";
-
-// pdf.js-based inline viewer for mobile (no native inline PDF viewer). Loaded
-// only on the mobile PDF path so pdfjs-dist + its worker never reach the
-// desktop bundle.
-const PdfMobileViewer = dynamic(
-  () => import("@/components/files/pdf-mobile-viewer").then((m) => m.PdfMobileViewer),
-  { ssr: false },
-);
-
-// Map a few well-known extensions back to canonical MIME types. Used when the
-// server returns application/octet-stream (or empty) for an attachment whose
-// actual type is obvious from the filename. The blob.type drives how browsers
-// render blob: URLs, so guessing wrong here means the inline preview silently
-// downgrades to a download.
-const EXT_TO_MIME: Record<string, string> = {
-  pdf: "application/pdf",
-  png: "image/png",
-  jpg: "image/jpeg",
-  jpeg: "image/jpeg",
-  gif: "image/gif",
-  webp: "image/webp",
-  avif: "image/avif",
-  bmp: "image/bmp",
-  mp3: "audio/mpeg",
-  wav: "audio/wav",
-  ogg: "audio/ogg",
-  m4a: "audio/mp4",
-  mp4: "video/mp4",
-  webm: "video/webm",
-  ogv: "video/ogg",
-};
-
-function inferMimeFromName(name: string): string | undefined {
-  const ext = name.toLowerCase().split(".").pop();
-  return ext ? EXT_TO_MIME[ext] : undefined;
-}
+import { getFilePreviewKind } from "@/lib/file-preview";
 
 interface FilePreviewModalProps {
   name: string;
@@ -149,54 +111,6 @@ export function FilePreviewModal({ name, onClose, onDownload, getFileContent }:
   const [loading, setLoading] = useState(true);
   const [error, setError] = useState(false);
   const [resolvedFileType, setResolvedFileType] = useState(() => getFilePreviewKind(name));
-  const [pdfInlineSupported, setPdfInlineSupported] = useState(true);
-  // Whether the resolved blob MIME is inert enough to open as a top-level
-  // navigation. Blob URLs inherit our origin, so opening a script-bearing type
-  // (text/html, image/svg+xml, ...) in a new tab would execute it in-origin.
-  const [canOpenInNewTab, setCanOpenInNewTab] = useState(false);
-  const [emlContent, setEmlContent] = useState<ParsedEml | null>(null);
-
-  // Decide whether to render the PDF in a plain <iframe> (desktop) or with the
-  // pdf.js canvas viewer (mobile). navigator.pdfViewerEnabled is the standard
-  // signal and correctly reports false on Android Chrome (no inline viewer).
-  // iOS Safari is the exception: it reports true (it can show PDFs on top-frame
-  // navigation) yet renders only the FIRST page inside an <iframe> - a
-  // long-standing WebKit limitation - so it must use pdf.js too. Detect iOS
-  // (incl. iPadOS, which spoofs a "Macintosh" UA but exposes touch points).
-  useEffect(() => {
-    const nav = navigator as Navigator & { pdfViewerEnabled?: boolean };
-    const isIOS =
-      /iPad|iPhone|iPod/.test(nav.userAgent) ||
-      (nav.maxTouchPoints > 1 && /Macintosh/.test(nav.userAgent));
-    if (isIOS) {
-      setPdfInlineSupported(false);
-    } else if (typeof nav.pdfViewerEnabled === "boolean") {
-      setPdfInlineSupported(nav.pdfViewerEnabled);
-    }
-  }, []);
-
-  // Keep the latest onClose for the back-button handler without re-subscribing.
-  const onCloseRef = useRef(onClose);
-  onCloseRef.current = onClose;
-
-  // Make the Android/browser Back button close the preview instead of
-  // navigating the page underneath: push a throwaway history entry when the
-  // modal opens and close it on popstate. On a normal close (X / backdrop /
-  // Escape) the modal unmounts and we pop that entry ourselves, so the user's
-  // next Back isn't swallowed by it.
-  useEffect(() => {
-    window.history.pushState({ __filePreview: true }, "");
-    let poppedByBack = false;
-    const onPop = () => {
-      poppedByBack = true;
-      onCloseRef.current();
-    };
-    window.addEventListener("popstate", onPop);
-    return () => {
-      window.removeEventListener("popstate", onPop);
-      if (!poppedByBack) window.history.back();
-    };
-  }, []);
 
   const fileType = resolvedFileType;
 
@@ -206,8 +120,6 @@ export function FilePreviewModal({ name, onClose, onDownload, getFileContent }:
 
     setContent(null);
     setObjectUrl(null);
-    setCanOpenInNewTab(false);
-    setEmlContent(null);
     setLoading(true);
     setError(false);
     setResolvedFileType(getFilePreviewKind(name));
@@ -224,36 +136,9 @@ export function FilePreviewModal({ name, onClose, onDownload, getFileContent }:
         if (previewType === "text" || previewType === "markdown") {
           const text = await blob.text();
           if (!cancelled) setContent(text);
-        } else if (previewType === "eml") {
-          // Parse the embedded message (postal-mime, dynamic-imported so it
-          // stays off the bundle) and render it like an email via EmlPreview.
-          const { default: PostalMime } = await import("postal-mime");
-          const parsed = await new PostalMime().parse(await blob.arrayBuffer());
-          if (!cancelled) setEmlContent(parsed as ParsedEml);
         } else {
-          // Stalwart's download endpoint can return generic
-          // application/octet-stream for attachments even when the email's
-          // MIME structure declared application/pdf (etc.). The blob inherits
-          // that, so a blob: URL plugged into <iframe> looks like a binary
-          // stream and Chrome/Edge silently download it (with the blob UUID
-          // as filename) instead of rendering inline. Re-wrap with the most
-          // specific MIME we can resolve - prefer explicit attachment type,
-          // then filename-derived MIME, then whatever the blob came with.
-          const inferredFromName = inferMimeFromName(name);
-          const isUseless = (ty?: string) =>
-            !ty || ty === "application/octet-stream" || ty === "binary/octet-stream";
-          const effectiveType =
-            (contentType && !isUseless(contentType) ? contentType : undefined)
-            ?? inferredFromName
-            ?? blob.type;
-          const typedBlob = blob.type !== effectiveType
-            ? new Blob([blob], { type: effectiveType })
-            : blob;
-          revokeUrl = URL.createObjectURL(typedBlob);
-          if (!cancelled) {
-            setObjectUrl(revokeUrl);
-            setCanOpenInNewTab(isMimeTypeSafeForInlinePreview(effectiveType));
-          }
+          revokeUrl = URL.createObjectURL(blob);
+          if (!cancelled) setObjectUrl(revokeUrl);
         }
       } catch {
         if (!cancelled) setError(true);
@@ -288,18 +173,6 @@ export function FilePreviewModal({ name, onClose, onDownload, getFileContent }:
       <div className="flex items-center justify-between px-4 py-3 bg-background/90 backdrop-blur border-b border-border" onClick={(e) => e.stopPropagation()}>
         <h3 className="text-sm font-medium truncate">{name}</h3>
         <div className="flex items-center gap-2">
-          {objectUrl && canOpenInNewTab && (
-            <Button
-              variant="ghost"
-              size="icon"
-              className="h-8 w-8"
-              title={t("open_in_new_tab")}
-              aria-label={t("open_in_new_tab")}
-              onClick={() => window.open(objectUrl, "_blank", "noopener,noreferrer")}
-            >
-              <ExternalLink className="w-4 h-4" />
-            </Button>
-          )}
           <Button variant="ghost" size="icon" className="h-8 w-8" onClick={() => void onDownload()}>
             <Download className="w-4 h-4" />
           </Button>
@@ -338,10 +211,6 @@ export function FilePreviewModal({ name, onClose, onDownload, getFileContent }:
           </div>
         )}
 
-        {!loading && !error && fileType === "eml" && emlContent && (
-          <EmlPreview message={emlContent} />
-        )}
-
         {!loading && !error && fileType === "image" && objectUrl && (
           <img
             src={objectUrl}
@@ -362,29 +231,19 @@ export function FilePreviewModal({ name, onClose, onDownload, getFileContent }:
           />
         )}
 
-        {!loading && !error && fileType === "pdf" && objectUrl && pdfInlineSupported && (
-          // <iframe> renders PDFs reliably across desktop Chromium, Firefox,
-          // and Safari from a blob: URL. <object> was prone to falling back to
-          // a silent download when the blob's Content-Type wasn't recognised.
-          <iframe
-            src={objectUrl}
+        {!loading && !error && fileType === "pdf" && objectUrl && (
+          <object
+            data={objectUrl}
+            type="application/pdf"
             className="w-full max-w-5xl h-full rounded-lg bg-white"
-            title={name}
-            onClick={(e) => e.stopPropagation()}
-          />
-        )}
-
-        {!loading && !error && fileType === "pdf" && objectUrl && !pdfInlineSupported && (
-          // Mobile browsers can't show a PDF inline in an <iframe> (Android: a
-          // blank frame / silent download; iOS: only the first page), so render
-          // it with pdf.js (canvas) instead. The header's open-in-new-tab /
-          // download actions are the fallback if pdf.js can't render the doc.
-          <div
-            className="w-full max-w-3xl h-full overflow-auto rounded-lg bg-neutral-200 dark:bg-neutral-800 p-2"
+            aria-label={name}
             onClick={(e) => e.stopPropagation()}
           >
-            <PdfMobileViewer url={objectUrl} />
-          </div>
+            <Button onClick={() => void onDownload()}>
+              <Download className="w-4 h-4 mr-2" />
+              {t("download")}
+            </Button>
+          </object>
         )}
 
         {!loading && !error && fileType === "audio" && objectUrl && (

components/files/pdf-mobile-viewer.tsx

@@ -1,223 +0,0 @@
-"use client";
-
-import { useEffect, useRef, useState } from "react";
-import { useTranslations } from "next-intl";
-import { Loader2, ExternalLink } from "lucide-react";
-import { Button } from "@/components/ui/button";
-
-// Real inline PDF preview for mobile browsers. Android Chrome / iOS WebKit have
-// no native inline PDF viewer, so the desktop <iframe src=blob:> approach
-// renders a blank frame. pdf.js rasterises each page to a <canvas> in pure JS,
-// so it works everywhere regardless of native PDF support.
-//
-// This component is dynamic-imported (ssr:false) only on the mobile PDF path,
-// and it dynamic-imports pdfjs-dist itself, so the (~hundreds of KB) library +
-// worker never reach the desktop bundle.
-
-// iOS WebKit caps total canvas area (~16 MP) and is memory-sensitive; keep each
-// page's backing store well under that so large pages don't render blank. The
-// backing store is rendered at ~2x the fit width (dpr), which also gives the
-// double-tap zoom some headroom before CSS upscaling softens the text.
-const MAX_CANVAS_AREA = 4_000_000; // ~4 MP per page
-
-// Double-tap zoom steps: fit -> 2x -> 3x -> fit. Implemented as the page
-// container's CSS width (so panning is native scrolling, not a transform).
-const ZOOM_STEPS = [1, 2, 3];
-const MAX_ZOOM = 4; // pinch can go a bit beyond the double-tap steps
-const DOUBLE_TAP_MS = 300;
-const DOUBLE_TAP_SLOP = 30; // px
-
-export function PdfMobileViewer({ url }: { url: string }) {
-  const rootRef = useRef<HTMLDivElement>(null);
-  const pagesRef = useRef<HTMLDivElement>(null);
-  const zoom = useRef({ step: 0, scale: 1 });
-  const [status, setStatus] = useState<"loading" | "ready" | "error">("loading");
-  const t = useTranslations("files");
-
-  // Render the PDF pages to canvases.
-  useEffect(() => {
-    let cancelled = false;
-    let loadingTask: import("pdfjs-dist").PDFDocumentLoadingTask | null = null;
-
-    // Reset zoom for a freshly loaded document.
-    zoom.current = { step: 0, scale: 1 };
-    if (pagesRef.current) pagesRef.current.style.width = "100%";
-
-    (async () => {
-      try {
-        const pdfjs = await import("pdfjs-dist");
-        pdfjs.GlobalWorkerOptions.workerSrc = new URL(
-          "pdfjs-dist/build/pdf.worker.min.mjs",
-          import.meta.url,
-        ).toString();
-
-        loadingTask = pdfjs.getDocument({ url });
-        const doc = await loadingTask.promise;
-        if (cancelled) return;
-
-        const pages = pagesRef.current;
-        if (!pages) return;
-        pages.replaceChildren();
-
-        const dpr = Math.min(window.devicePixelRatio || 1, 2);
-        const cssWidth = Math.min(pages.clientWidth || 320, 900);
-
-        for (let n = 1; n <= doc.numPages; n++) {
-          if (cancelled) return;
-          const page = await doc.getPage(n);
-          const baseVp = page.getViewport({ scale: 1 });
-          let scale = (cssWidth / baseVp.width) * dpr;
-          const area = baseVp.width * scale * (baseVp.height * scale);
-          if (area > MAX_CANVAS_AREA) scale *= Math.sqrt(MAX_CANVAS_AREA / area);
-          const viewport = page.getViewport({ scale });
-
-          const canvas = document.createElement("canvas");
-          canvas.width = Math.floor(viewport.width);
-          canvas.height = Math.floor(viewport.height);
-          canvas.style.width = "100%";
-          canvas.style.height = "auto";
-          canvas.style.display = "block";
-          canvas.style.margin = "0 auto 8px";
-          canvas.style.background = "#fff";
-          pages.appendChild(canvas);
-          await page.render({ canvas, viewport }).promise;
-        }
-        if (!cancelled) setStatus("ready");
-      } catch {
-        if (!cancelled) setStatus("error");
-      }
-    })();
-
-    return () => {
-      cancelled = true;
-      void loadingTask?.destroy().catch(() => {});
-    };
-  }, [url]);
-
-  // Gesture zoom. 1-finger double-tap cycles the steps (fit -> 2x -> 3x ->
-  // fit); 2-finger pinch zooms continuously up to MAX_ZOOM. Both drive a
-  // per-page CSS-width zoom that pans via native scrolling and re-centre on the
-  // gesture point. touch-action (pan-x pan-y) keeps 1-finger panning native
-  // while disabling the browser's own pinch/double-tap page zoom, which we
-  // replace here.
-  useEffect(() => {
-    const root = rootRef.current;
-    if (!root) return;
-
-    const distance = (a: Touch, b: Touch) =>
-      Math.hypot(a.clientX - b.clientX, a.clientY - b.clientY);
-
-    // Apply an absolute zoom scale, keeping (cx, cy) [relative to root] under
-    // the same content point.
-    const applyZoom = (target: number, cx: number, cy: number) => {
-      const pages = pagesRef.current;
-      if (!pages) return;
-      const next = Math.max(1, Math.min(MAX_ZOOM, target));
-      const ratio = next / zoom.current.scale;
-      if (ratio === 1) return;
-      pages.style.width = `${next * 100}%`;
-      void root.offsetWidth; // force reflow so the new scroll range is live
-      root.scrollLeft = (root.scrollLeft + cx) * ratio - cx;
-      root.scrollTop = (root.scrollTop + cy) * ratio - cy;
-      zoom.current.scale = next;
-    };
-
-    let lastTap = 0;
-    let lastX = 0;
-    let lastY = 0;
-    let pinching = false;
-    let pinchStartDist = 0;
-    let pinchStartScale = 1;
-    let didPinch = false;
-
-    const onStart = (e: TouchEvent) => {
-      if (e.touches.length === 2) {
-        pinching = true;
-        didPinch = true;
-        pinchStartDist = distance(e.touches[0], e.touches[1]) || 1;
-        pinchStartScale = zoom.current.scale;
-      }
-    };
-
-    const onMove = (e: TouchEvent) => {
-      if (!pinching || e.touches.length !== 2) return;
-      e.preventDefault(); // take over the 2-finger gesture from native pan
-      const rect = root.getBoundingClientRect();
-      const cx = (e.touches[0].clientX + e.touches[1].clientX) / 2 - rect.left;
-      const cy = (e.touches[0].clientY + e.touches[1].clientY) / 2 - rect.top;
-      applyZoom(pinchStartScale * (distance(e.touches[0], e.touches[1]) / pinchStartDist), cx, cy);
-    };
-
-    const onEnd = (e: TouchEvent) => {
-      if (pinching && e.touches.length < 2) {
-        pinching = false;
-        // Snap the step index to the current scale so double-tap stays sensible.
-        const s = zoom.current.scale;
-        zoom.current.step = s <= 1.01 ? 0 : s < 3 ? 1 : 2;
-      }
-      if (e.touches.length > 0) return; // fingers still down
-      if (didPinch) {
-        didPinch = false; // a pinch is not a tap
-        return;
-      }
-      if (e.changedTouches.length !== 1) return;
-      const touch = e.changedTouches[0];
-      const now = e.timeStamp;
-      const isDouble =
-        now - lastTap < DOUBLE_TAP_MS &&
-        Math.abs(touch.clientX - lastX) < DOUBLE_TAP_SLOP &&
-        Math.abs(touch.clientY - lastY) < DOUBLE_TAP_SLOP;
-      if (!isDouble) {
-        lastTap = now;
-        lastX = touch.clientX;
-        lastY = touch.clientY;
-        return;
-      }
-      lastTap = 0; // consume so a third tap starts fresh
-      e.preventDefault();
-      const rect = root.getBoundingClientRect();
-      zoom.current.step = (zoom.current.step + 1) % ZOOM_STEPS.length;
-      applyZoom(ZOOM_STEPS[zoom.current.step], touch.clientX - rect.left, touch.clientY - rect.top);
-    };
-
-    root.addEventListener("touchstart", onStart, { passive: true });
-    root.addEventListener("touchmove", onMove, { passive: false });
-    root.addEventListener("touchend", onEnd, { passive: false });
-    return () => {
-      root.removeEventListener("touchstart", onStart);
-      root.removeEventListener("touchmove", onMove);
-      root.removeEventListener("touchend", onEnd);
-    };
-  }, []);
-
-  return (
-    <div
-      ref={rootRef}
-      className="w-full h-full overflow-auto"
-      // Allow panning, but disable the browser's pinch/double-tap page zoom so
-      // our own double-tap zoom drives the PDF instead of the whole modal.
-      style={{ touchAction: "pan-x pan-y" }}
-    >
-      {status === "loading" && (
-        <div className="flex justify-center py-10">
-          <Loader2 className="w-6 h-6 animate-spin text-muted-foreground" />
-        </div>
-      )}
-      {status === "error" && (
-        // pdf.js couldn't render this document (corrupt/encrypted, worker load
-        // failure, ...). Offer the OS/native viewer instead of a stuck frame.
-        <div className="flex justify-center py-10">
-          <Button
-            variant="outline"
-            size="sm"
-            onClick={() => window.open(url, "_blank", "noopener,noreferrer")}
-          >
-            <ExternalLink className="w-4 h-4 mr-2" />
-            {t("open_in_new_tab")}
-          </Button>
-        </div>
-      )}
-      <div ref={pagesRef} className="w-full" />
-    </div>
-  );
-}

components/filters/filter-rule-modal.tsx

@@ -27,7 +27,7 @@ interface FilterRuleModalProps {
 }
 
 const ALL_FIELDS: FilterConditionField[] = [
-  "from", "to", "cc", "subject", "header", "size", "body", "attachment",
+  "from", "to", "cc", "subject", "header", "size", "body",
 ];
 
 const TEXT_COMPARATORS: FilterComparator[] = [
@@ -36,14 +36,6 @@ const TEXT_COMPARATORS: FilterComparator[] = [
 
 const SIZE_COMPARATORS: FilterComparator[] = ["greater_than", "less_than"];
 
-const ATTACHMENT_COMPARATORS: FilterComparator[] = ["has_any", "has_type"];
-
-function comparatorsFor(field: FilterConditionField): FilterComparator[] {
-  if (field === "size") return SIZE_COMPARATORS;
-  if (field === "attachment") return ATTACHMENT_COMPARATORS;
-  return TEXT_COMPARATORS;
-}
-
 const ALL_ACTION_TYPES: FilterActionType[] = [
   "move", "copy", "forward", "mark_read", "star", "add_label", "discard", "reject", "keep", "stop",
 ];
@@ -55,27 +47,6 @@ function makeEmptyCondition(): FilterCondition {
   return { field: "from", comparator: "contains", value: "" };
 }
 
-// Multi-value handling: conditions are stored as string | string[]. The UI
-// presents them as a single comma-separated text input — the user types
-// "a, b, c" and the saved value becomes ["a","b","c"]. Single entries stay
-// strings so existing single-value rules don't change shape.
-function valueToInputString(v: string | string[]): string {
-  if (Array.isArray(v)) return v.join(", ");
-  return v;
-}
-
-function inputStringToValue(s: string): string | string[] {
-  const parts = s.split(",").map((p) => p.trim()).filter((p) => p.length > 0);
-  if (parts.length === 0) return "";
-  if (parts.length === 1) return parts[0];
-  return parts;
-}
-
-function isConditionValueEmpty(v: string | string[]): boolean {
-  if (Array.isArray(v)) return v.length === 0 || v.every((x) => !x.trim());
-  return !v.trim();
-}
-
 function makeEmptyAction(): FilterAction {
   return { type: "move", value: "" };
 }
@@ -126,23 +97,9 @@ export function FilterRuleModal({
       return;
     }
 
-    // While editing, condition.value is always the raw string typed into the
-    // input (commas not yet split). Convert to array form here on save so a
-    // user typing "a, b, c" actually persists as ["a","b","c"]. This is the
-    // moment we know editing is finished - splitting earlier would eat any
-    // comma the user just typed mid-edit.
-    const validConditions = conditions
-      .filter((c) => {
-        if (c.field === "attachment" && c.comparator === "has_any") return true;
-        return !isConditionValueEmpty(c.value);
-      })
-      .map((c) => {
-        if (c.field === "attachment" && c.comparator === "has_any") return c;
-        if (c.field === "size") return c; // numeric, single-value only
-        if (typeof c.value !== "string") return c; // already structured
-        const parsed = inputStringToValue(c.value);
-        return { ...c, value: parsed };
-      });
+    const validConditions = conditions.filter(
+      (c) => c.value.trim()
+    );
     if (validConditions.length === 0) {
       toast.error(t("validation_empty_conditions"));
       return;
@@ -172,27 +129,15 @@ export function FilterRuleModal({
       prev.map((c, i) => {
         if (i !== index) return c;
         const updated = { ...c, ...updates };
-        // Reconcile the comparator when the field changes so we never end up
-        // with e.g. (field=attachment, comparator=contains) — invalid for the
-        // Sieve generator. Each field has its own valid comparator set.
-        if (updates.field && updates.field !== c.field) {
-          const allowed = comparatorsFor(updates.field);
-          if (!allowed.includes(c.comparator)) {
-            updated.comparator = allowed[0];
-          }
+        if (updates.field === "size" && !SIZE_COMPARATORS.includes(c.comparator)) {
+          updated.comparator = "greater_than";
+        }
+        if (updates.field && updates.field !== "size" && SIZE_COMPARATORS.includes(c.comparator)) {
+          updated.comparator = "contains";
         }
         if (updates.field && updates.field !== "header") {
           delete updated.headerName;
         }
-        // has_any takes no value; clear it so we don't leak old text into
-        // the generated Sieve.
-        if (updated.field === "attachment" && updated.comparator === "has_any") {
-          updated.value = "";
-        }
-        // Size is numeric, single value only - collapse any list to scalar.
-        if (updated.field === "size" && Array.isArray(updated.value)) {
-          updated.value = updated.value[0] ?? "";
-        }
         return updated;
       })
     );
@@ -336,58 +281,24 @@ export function FilterRuleModal({
                     className={selectClass}
                     aria-label={t("comparators.contains")}
                   >
-                    {comparatorsFor(condition.field).map((c) => (
-                      <option key={c} value={c}>
-                        {t(`comparators.${c}`)}
-                      </option>
-                    ))}
+                    {(condition.field === "size" ? SIZE_COMPARATORS : TEXT_COMPARATORS).map(
+                      (c) => (
+                        <option key={c} value={c}>
+                          {t(`comparators.${c}`)}
+                        </option>
+                      )
+                    )}
                   </select>
 
-                  {/* has_any takes no value; render a stub so the row layout
-                      stays consistent but no input is editable. */}
-                  {condition.field === "attachment" && condition.comparator === "has_any" ? (
-                    <div className="flex-1 min-w-[120px]" />
-                  ) : (
-                    <Input
-                      value={valueToInputString(condition.value)}
-                      onChange={(e) =>
-                        // Store the raw input string while typing. Splitting
-                        // commas into an array on every keystroke would eat
-                        // the comma the moment it's typed.
-                        updateCondition(index, { value: e.target.value })
-                      }
-                      onBlur={(e) => {
-                        // On blur: normalise comma-separated input into an
-                        // array (or single string when only one item). Size
-                        // stays numeric/single-value; attachment-has_any has
-                        // no value at all.
-                        if (condition.field === "size") return;
-                        if (
-                          condition.field === "attachment" &&
-                          condition.comparator === "has_any"
-                        )
-                          return;
-                        const parsed = inputStringToValue(e.target.value);
-                        // Only update if the normalised shape actually
-                        // differs - avoids triggering a no-op re-render and
-                        // resetting the user's cursor on every blur.
-                        if (
-                          JSON.stringify(parsed) !== JSON.stringify(condition.value)
-                        ) {
-                          updateCondition(index, { value: parsed });
-                        }
-                      }}
-                      placeholder={
-                        condition.field === "size"
-                          ? t("size_placeholder")
-                          : condition.field === "attachment"
-                            ? t("attachment_type_placeholder")
-                            : t("value_placeholder_multi")
-                      }
-                      className="flex-1 min-w-[120px]"
-                      type={condition.field === "size" ? "number" : "text"}
-                    />
-                  )}
+                  <Input
+                    value={condition.value}
+                    onChange={(e) => updateCondition(index, { value: e.target.value })}
+                    placeholder={
+                      condition.field === "size" ? t("size_placeholder") : t("header_placeholder")
+                    }
+                    className="flex-1 min-w-[120px]"
+                    type={condition.field === "size" ? "number" : "text"}
+                  />
 
                   <button
                     type="button"

components/identity/identity-form.tsx

@@ -8,7 +8,7 @@ import type { Identity, EmailAddress } from '@/lib/jmap/types';
 import { sanitizeSignatureHtml } from '@/lib/email-sanitization';
 import { getEmailValidationError, validateEmailList } from '@/lib/validation';
 
-// Stalwarts JMAP Identity/set caps signature fields at 2047 UTF-8 bytes
+// JMAP Identity/set caps signature fields at 2047 UTF-8 bytes per RFC 8621 §6.1.
 const SIGNATURE_MAX_BYTES = 2047;
 const utf8Encoder = new TextEncoder();
 

components/layout/resize-handle.tsx

@@ -77,11 +77,9 @@ export function ResizeHandle({ onResizeStart, onResize, onResizeEnd, onDoubleCli
       onKeyDown={handleKeyDown}
       onDoubleClick={onDoubleClick}
       className={cn(
-        // Centered over the seam with negative margins so the handle adds no
-        // net layout space (panes sit flush) while staying draggable.
-        "flex-shrink-0 hover:bg-primary/30 active:bg-primary/50 transition-colors relative group z-10",
+        "flex-shrink-0 hover:bg-primary/30 active:bg-primary/50 transition-colors relative group",
         "focus-visible:outline-none focus-visible:bg-primary/40 focus-visible:ring-2 focus-visible:ring-primary/50",
-        isHorizontal ? "h-1 -my-0.5 cursor-row-resize bg-border" : "w-1 -mx-0.5 cursor-col-resize",
+        isHorizontal ? "h-1 cursor-row-resize bg-border" : "w-1 cursor-col-resize",
         className
       )}
     >

components/layout/sidebar.tsx

@@ -904,11 +904,11 @@ export function Sidebar({
   };
 
   const openFolderSettings = () => {
-    try { sessionStorage.setItem('settings-deep-link-tab', 'folders'); } catch { /* */ }
+    try { localStorage.setItem('settings-active-tab', 'folders'); } catch { /* */ }
     router.push('/settings');
   };
   const openKeywordSettings = () => {
-    try { sessionStorage.setItem('settings-deep-link-tab', 'keywords'); } catch { /* */ }
+    try { localStorage.setItem('settings-active-tab', 'keywords'); } catch { /* */ }
     router.push('/settings');
   };
 
@@ -942,34 +942,30 @@ export function Sidebar({
       {/* Header - hidden in the Pro shell, which owns its own chrome and
           would otherwise render an empty strip (no collapse, no switcher). */}
       {!isEmbedded && (
-        // Border lives on the wrapper (outside the h-14 box) so the bar's total
-        // height matches the search/reply toolbars, which border-b their wrapper too.
-        <div className="border-b border-border">
-          <div className={cn("flex items-center h-14", isCollapsed ? "justify-center px-2" : "gap-1 px-2")}>
-            <Button
-              variant="ghost"
-              size="icon"
-              onClick={onSidebarClose}
-              className="lg:hidden h-9 w-9 flex-shrink-0"
-              aria-label={t("close")}
-            >
-              <X className="w-5 h-5" />
-            </Button>
+        <div className={cn("flex items-center border-b border-border", isCollapsed ? "justify-center px-2 py-2" : "gap-1 px-2 py-2")}>
+          <Button
+            variant="ghost"
+            size="icon"
+            onClick={onSidebarClose}
+            className="lg:hidden h-9 w-9 flex-shrink-0"
+            aria-label={t("close")}
+          >
+            <X className="w-5 h-5" />
+          </Button>
 
-            <Button
-              variant="ghost"
-              size="icon"
-              onClick={toggleSidebarCollapsed}
-              className="hidden lg:flex h-8 w-8 flex-shrink-0"
-              title={isCollapsed ? t("expand_tooltip") : t("collapse_tooltip")}
-            >
-              {isCollapsed ? <ChevronsRight className="w-4 h-4" /> : <ChevronsLeft className="w-4 h-4" />}
-            </Button>
+          <Button
+            variant="ghost"
+            size="icon"
+            onClick={toggleSidebarCollapsed}
+            className="hidden lg:flex h-8 w-8 flex-shrink-0"
+            title={isCollapsed ? t("expand_tooltip") : t("collapse_tooltip")}
+          >
+            {isCollapsed ? <ChevronsRight className="w-4 h-4" /> : <ChevronsLeft className="w-4 h-4" />}
+          </Button>
 
-            {!isCollapsed && !hideAccountSwitcher && (
-              <AccountSwitcher variant="expanded" className="flex-1" />
-            )}
-          </div>
+          {!isCollapsed && !hideAccountSwitcher && (
+            <AccountSwitcher variant="expanded" className="flex-1" />
+          )}
         </div>
       )}
 

components/plugins/plugin-dialog-host.tsx

@@ -7,19 +7,6 @@
 import React, { useEffect, useSyncExternalStore } from 'react';
 import { head, resolveHead, subscribe } from '@/lib/plugin-sandbox/host-dialog';
 
-// Lightweight **bold** support in plugin dialog messages. Everything else is
-// rendered literally (newlines come from the parent's white-space: pre-wrap).
-// Splitting on the ** delimiter yields alternating plain/bold segments (odd
-// indices are bold). Plugins control these strings, so the delimiters balance.
-function renderMessage(message?: string): React.ReactNode {
-  if (!message) return null;
-  return message.split('**').map((seg, i) =>
-    i % 2 === 1
-      ? <strong key={i}>{seg}</strong>
-      : <React.Fragment key={i}>{seg}</React.Fragment>,
-  );
-}
-
 export function PluginDialogHost(): React.JSX.Element | null {
   const current = useSyncExternalStore(subscribe, head, () => null);
 
@@ -63,9 +50,9 @@ export function PluginDialogHost(): React.JSX.Element | null {
     >
       <div
         style={{
-          background: 'var(--color-popover, #fff)',
-          color: 'var(--color-popover-foreground, #0f172a)',
-          border: '1px solid var(--color-border, #e2e8f0)',
+          background: 'var(--background, #fff)',
+          color: 'var(--foreground, #0f172a)',
+          border: '1px solid var(--border, #e2e8f0)',
           borderRadius: 12,
           padding: 20,
           maxWidth: 480,
@@ -76,8 +63,8 @@ export function PluginDialogHost(): React.JSX.Element | null {
         <h2 id="plugin-dialog-title" style={{ fontSize: 16, fontWeight: 600, margin: '0 0 10px 0' }}>
           {current.title}
         </h2>
-        <p style={{ fontSize: 13, lineHeight: 1.5, margin: '0 0 16px 0', color: 'var(--color-muted-foreground, #64748b)', whiteSpace: 'pre-wrap', overflowWrap: 'anywhere' }}>
-          {renderMessage(current.message)}
+        <p style={{ fontSize: 13, lineHeight: 1.5, margin: '0 0 16px 0', color: 'var(--muted-foreground, #64748b)', whiteSpace: 'pre-wrap' }}>
+          {current.message}
         </p>
         <div style={{ display: 'flex', gap: 8, justifyContent: 'flex-end' }}>
           {current.kind === 'confirm' && (
@@ -91,7 +78,7 @@ export function PluginDialogHost(): React.JSX.Element | null {
                 fontSize: 13,
                 fontWeight: 500,
                 cursor: 'pointer',
-                border: '1px solid var(--color-border, #e2e8f0)',
+                border: '1px solid var(--border, #e2e8f0)',
                 background: 'transparent',
                 color: 'inherit',
               }}
@@ -110,14 +97,14 @@ export function PluginDialogHost(): React.JSX.Element | null {
               fontWeight: 500,
               cursor: 'pointer',
               border: '1px solid transparent',
-              background: current.danger ? 'var(--color-destructive, #dc2626)' : 'var(--color-primary, #3b82f6)',
-              color: current.danger ? 'var(--color-destructive-foreground, #fff)' : 'var(--color-primary-foreground, #fff)',
+              background: current.danger ? '#dc2626' : '#3b82f6',
+              color: '#fff',
             }}
           >
             {confirmLabel}
           </button>
         </div>
-        <div style={{ marginTop: 12, fontSize: 11, color: 'var(--color-muted-foreground, #94a3b8)', textAlign: 'right' }}>
+        <div style={{ marginTop: 12, fontSize: 11, color: 'var(--muted-foreground, #94a3b8)', textAlign: 'right' }}>
           From plugin: {current.pluginId}
         </div>
       </div>

components/plugins/plugin-iframe-slot.tsx

@@ -10,8 +10,6 @@ import React, { useEffect, useRef, useState } from 'react';
 import type { SlotName } from '@/lib/plugin-types';
 import { get as getActivePlugin } from '@/lib/plugin-sandbox/registry';
 import { createSlotInstance, type SandboxInstance } from '@/lib/plugin-sandbox/host-bridge';
-import { snapshotHostTheme } from '@/lib/plugin-sandbox/host-theme';
-import { useThemeStore } from '@/stores/theme-store';
 
 interface Props {
   pluginId: string;
@@ -71,16 +69,6 @@ export function PluginIframeSlot({ pluginId, slot, extraProps }: Props) {
     instanceRef.current?.updateProps(extraProps ?? {});
   }, [extraProps]);
 
-  // Re-theme the live slot iframe when the host theme changes (dark/light
-  // toggle or custom theme switch), without tearing down the iframe. Reacting
-  // to resolvedTheme + activeThemeId covers both; the snapshot reads the
-  // resolved DOM values so it picks up whichever is active.
-  const resolvedTheme = useThemeStore((s) => s.resolvedTheme);
-  const activeThemeId = useThemeStore((s) => s.activeThemeId);
-  useEffect(() => {
-    instanceRef.current?.setTheme(snapshotHostTheme());
-  }, [resolvedTheme, activeThemeId]);
-
   if (show !== true) return null;
   return <div ref={wrapperRef} style={{ height, minHeight: height }} data-plugin-iframe-slot={`${pluginId}:${slot}`} />;
 }

components/pro/pro-email-tab-body.tsx

@@ -10,7 +10,6 @@ import { useSettingsStore } from "@/stores/settings-store";
 import { toast } from "@/stores/toast-store";
 import { useProTabStore, type ProEmailTabData, type ProReplyContext } from "@/stores/pro-tab-store";
 import type { Email } from "@/lib/jmap/types";
-import { buildReplySubject, buildForwardSubject } from "@/lib/subject-prefix";
 
 interface ProEmailTabBodyProps {
   tabId: string;
@@ -105,7 +104,7 @@ export function ProEmailTabBody({ tabId, data }: ProEmailTabBodyProps) {
       replyTo: buildReplyContext(email),
       sourceEmailId: email.id,
       initialDraftText: draftText,
-      title: buildReplySubject(email.subject || t('email_composer.new_message'), t('email_composer.prefix.reply')),
+      title: `Re: ${email.subject || t('email_composer.new_message')}`,
     });
   }, [email, openComposeTab, t]);
 
@@ -117,7 +116,7 @@ export function ProEmailTabBody({ tabId, data }: ProEmailTabBodyProps) {
       mode: 'replyAll',
       replyTo: buildReplyContext(email),
       sourceEmailId: email.id,
-      title: buildReplySubject(email.subject || t('email_composer.new_message'), t('email_composer.prefix.reply')),
+      title: `Re: ${email.subject || t('email_composer.new_message')}`,
     });
   }, [email, openComposeTab, t]);
 
@@ -129,7 +128,7 @@ export function ProEmailTabBody({ tabId, data }: ProEmailTabBodyProps) {
       mode: 'forward',
       replyTo: buildReplyContext(email),
       sourceEmailId: email.id,
-      title: buildForwardSubject(email.subject || t('email_composer.new_message'), t('email_composer.prefix.forward')),
+      title: `Fwd: ${email.subject || t('email_composer.new_message')}`,
     });
   }, [email, openComposeTab, t]);
 

components/pwa-install-prompt.tsx

@@ -1,7 +1,6 @@
 "use client";
 
 import { useEffect, useState } from "react";
-import { useTranslations } from "next-intl";
 import { X, Download } from "lucide-react";
 import { useConfig } from "@/hooks/use-config";
 import { withBasePath } from "@/lib/browser-navigation";
@@ -18,7 +17,6 @@ export function PWAInstallPrompt() {
     useState<BeforeInstallPromptEvent | null>(null);
   const [showPrompt, setShowPrompt] = useState(false);
   const { appName, faviconUrl, appLogoLightUrl, appLogoDarkUrl } = useConfig();
-  const t = useTranslations("pwa_install");
 
   useEffect(() => {
     if (localStorage.getItem(DISMISSED_KEY)) return;
@@ -86,17 +84,17 @@ export function PWAInstallPrompt() {
           )}
           <div>
             <h3 className="font-semibold text-sm text-neutral-900 dark:text-white">
-              {t("title", { appName })}
+              Install {appName}
             </h3>
             <p className="text-xs text-neutral-600 dark:text-neutral-400 mt-1">
-              {t("description")}
+              Install our app for quick access and offline support.
             </p>
           </div>
         </div>
         <button
           onClick={handleDismiss}
           className="text-neutral-400 hover:text-neutral-600 dark:hover:text-neutral-300 transition-colors"
-          aria-label={t("dismiss_aria")}
+          aria-label="Dismiss install prompt"
         >
           <X className="w-4 h-4" />
         </button>
@@ -107,20 +105,20 @@ export function PWAInstallPrompt() {
             onClick={handleDismiss}
             className="flex-1 px-3 py-2 text-sm font-medium text-neutral-700 dark:text-neutral-300 bg-neutral-100 dark:bg-neutral-800 rounded hover:bg-neutral-200 dark:hover:bg-neutral-700 transition-colors"
           >
-            {t("not_now")}
+            Not now
           </button>
           <button
             onClick={handleInstall}
             className="flex-1 px-3 py-2 text-sm font-medium text-white bg-blue-600 rounded hover:bg-blue-700 transition-colors"
           >
-            {t("install")}
+            Install
           </button>
         </div>
         <button
           onClick={handleDismissForever}
           className="w-full text-xs text-neutral-400 hover:text-neutral-600 dark:hover:text-neutral-300 transition-colors text-center"
         >
-          {t("dont_remind")}
+          Don&apos;t remind me again
         </button>
       </div>
     </div>

components/settings/calendar-management-settings.tsx

@@ -15,7 +15,25 @@ import { ICalImportModal } from '@/components/calendar/ical-import-modal';
 import { ICalSubscriptionModal } from '@/components/calendar/ical-subscription-modal';
 import { useSettingsStore } from '@/stores/settings-store';
 import { apiFetch } from '@/lib/browser-navigation';
-import { CALENDAR_COLORS, sharedCalendarColorKey } from '@/lib/shared-calendar-colors';
+
+const CALENDAR_COLORS = [
+  "#3b82f6", // blue
+  "#ef4444", // red
+  "#22c55e", // green
+  "#f59e0b", // amber
+  "#8b5cf6", // violet
+  "#ec4899", // pink
+  "#14b8a6", // teal
+  "#f97316", // orange
+  "#06b6d4", // cyan
+  "#84cc16", // lime
+  "#6366f1", // indigo
+  "#a855f7", // purple
+  "#e11d48", // rose
+  "#0ea5e9", // sky
+  "#10b981", // emerald
+  "#d946ef", // fuchsia
+];
 
 function CalendarColorPicker({
   value,
@@ -164,8 +182,6 @@ export function CalendarManagementSettings() {
   const tImport = useTranslations('calendar.import');
   const tSub = useTranslations('calendar.subscription');
   const timeFormat = useSettingsStore((s) => s.timeFormat);
-  const sharedCalendarColors = useSettingsStore((s) => s.sharedCalendarColors);
-  const setSharedCalendarColor = useSettingsStore((s) => s.setSharedCalendarColor);
   const colorPickerRef = useRef<HTMLDivElement>(null);
 
   // Load calendars if not yet loaded
@@ -313,15 +329,6 @@ export function CalendarManagementSettings() {
 
   const handleColorChange = async (calendarId: string, color: string) => {
     if (!client) return;
-    // Shared calendars: recolor locally only - the viewer usually can't write
-    // the owner's calendar and it'd recolor it for everyone (see #345).
-    const cal = calendars.find((c) => c.id === calendarId);
-    if (cal?.isShared) {
-      setSharedCalendarColor(sharedCalendarColorKey(cal), color);
-      toast.success(t('color_updated'));
-      setColorPickerId(null);
-      return;
-    }
     try {
       await updateCalendar(client, calendarId, { color });
       toast.success(t('color_updated'));
@@ -389,7 +396,7 @@ export function CalendarManagementSettings() {
     <SettingsSection title={t('title')} description={t('description')}>
       <div className="space-y-2">
         {calendars.filter(cal => !isSubscriptionCalendar(cal.id)).map((cal) => {
-          const color = (cal.isShared && sharedCalendarColors[sharedCalendarColorKey(cal)]) || cal.color || '#3b82f6';
+          const color = cal.color || '#3b82f6';
 
           if (editingId === cal.id) {
             return (

components/settings/composing-settings.tsx

@@ -28,8 +28,6 @@ export function ComposingSettings() {
     subAddressDelimiter,
     signaturePosition,
     signatureSeparatorEnabled,
-    requestReadReceiptDefault,
-    readReceiptResponse,
     updateSetting,
   } = useSettingsStore();
   const { client } = useAuthStore();
@@ -80,25 +78,6 @@ export function ComposingSettings() {
         />
       </SettingItem>
 
-      <SettingItem label={t('request_read_receipt.label')} description={t('request_read_receipt.description')}>
-        <ToggleSwitch
-          checked={requestReadReceiptDefault}
-          onChange={(checked) => updateSetting('requestReadReceiptDefault', checked)}
-        />
-      </SettingItem>
-
-      <SettingItem label={t('read_receipt_response.label')} description={t('read_receipt_response.description')}>
-        <Select
-          value={readReceiptResponse}
-          onChange={(value) => updateSetting('readReceiptResponse', value as 'ask' | 'always' | 'never')}
-          options={[
-            { value: 'ask', label: t('read_receipt_response.ask') },
-            { value: 'always', label: t('read_receipt_response.always') },
-            { value: 'never', label: t('read_receipt_response.never') },
-          ]}
-        />
-      </SettingItem>
-
       <SettingItem
         label={t('sub_address_delimiter.label')}
         description={t('sub_address_delimiter.description', { delimiter: subAddressDelimiter })}

components/settings/filter-settings.tsx

@@ -36,17 +36,7 @@ function RuleSummary({ rule }: { rule: FilterRule }) {
   const conditions = rule.conditions.slice(0, 2).map((c) => {
     const field = t(`condition_fields.${c.field}`);
     const comparator = t(`comparators.${c.comparator}`);
-    // has_any is a no-value test ("attachment is present"); appending
-    // `""` would look broken in the summary line.
-    if (c.field === "attachment" && c.comparator === "has_any") {
-      return `${field} ${comparator}`;
-    }
-    // Multi-value conditions render as "a" / "b" / "c" with the locale's
-    // OR-glue between items so the line still reads as natural language.
-    const valueStr = Array.isArray(c.value)
-      ? c.value.map((v) => `"${v}"`).join(` ${t("or")} `)
-      : `"${c.value}"`;
-    return `${field} ${comparator} ${valueStr}`;
+    return `${field} ${comparator} "${c.value}"`;
   });
 
   const joiner = rule.matchType === "all" ? t("and") : t("or");
@@ -107,22 +97,7 @@ function VisualRuleSummary({ rule }: { rule: FilterRule }) {
               <span className="inline-flex items-baseline gap-1 px-1.5 py-px rounded-sm bg-muted/60 text-foreground">
                 <span className="font-medium text-blue-600 dark:text-blue-400">{field}</span>
                 <span className="text-muted-foreground">{comparator}</span>
-                {!(c.field === "attachment" && c.comparator === "has_any") && (
-                  <span className="text-foreground">
-                    {Array.isArray(c.value)
-                      ? c.value.map((v, k) => (
-                          <span key={k}>
-                            {k > 0 && (
-                              <span className="text-muted-foreground/70 italic mx-0.5">
-                                {t("or")}
-                              </span>
-                            )}
-                            “{v}”
-                          </span>
-                        ))
-                      : <>“{c.value}”</>}
-                  </span>
-                )}
+                <span className="text-foreground">“{c.value}”</span>
               </span>
             </span>
           );

components/settings/notification-settings.tsx

@@ -7,7 +7,7 @@ import { SettingsSection, SettingItem, ToggleSwitch, Select } from './settings-s
 import { playNotificationSound, NOTIFICATION_SOUNDS } from '@/lib/notification-sound';
 import type { NotificationSoundChoice } from '@/lib/notification-sound';
 import { Button } from '@/components/ui/button';
-import { CheckCircle2, Lock, Volume2, XCircle } from 'lucide-react';
+import { CheckCircle2, Volume2, XCircle } from 'lucide-react';
 import { usePolicyStore } from '@/stores/policy-store';
 import { useAuthStore } from '@/stores/auth-store';
 import { ConfirmDialog } from '@/components/ui/confirm-dialog';
@@ -40,30 +40,16 @@ export function NotificationSettings() {
     updateSetting,
   } = useSettingsStore();
   const { isSettingLocked, isSettingHidden } = usePolicyStore();
-  const adminPushRelayUrl = usePolicyStore((s) => s.policy.pushRelayUrl);
-  const pushRelayLocked = usePolicyStore((s) => s.policy.pushRelayUrlLocked) === true;
   const client = useAuthStore((s) => s.client);
   const username = useAuthStore((s) => s.username);
   const { dialogProps: confirmDialogProps, confirm: confirmDialog } = useConfirmDialog();
 
   const supported = typeof window !== 'undefined' && isWebPushSupported();
-  const adminUrl = (adminPushRelayUrl ?? '').trim();
-  const [relayUrl, setRelayUrl] = useState(adminUrl || DEFAULT_RELAY_BASE_URL);
+  const [relayUrl, setRelayUrl] = useState(DEFAULT_RELAY_BASE_URL);
   const [pushStatus, setPushStatus] = useState<PushStatus>(
     supported ? { kind: 'idle' } : { kind: 'unsupported' },
   );
 
-  // Pull the admin-configured URL into local state when policy loads/changes.
-  // When locked, the admin value always wins; when only set (not locked), use
-  // it as the initial default but let the user override.
-  useEffect(() => {
-    if (pushRelayLocked && adminUrl) {
-      setRelayUrl(adminUrl);
-    } else if (adminUrl) {
-      setRelayUrl((current) => (current === DEFAULT_RELAY_BASE_URL ? adminUrl : current));
-    }
-  }, [adminUrl, pushRelayLocked]);
-
   useEffect(() => {
     if (!supported) return;
     if (!client) return;
@@ -139,17 +125,12 @@ export function NotificationSettings() {
       <SettingsSection title={t('push.title')} description={t('push.description')}>
         <div className="rounded-md border p-4 space-y-3">
           <div className="flex items-center justify-between gap-3">
-            <label className="text-sm font-medium inline-flex items-center gap-1.5" htmlFor="push-relay-url">
+            <label className="text-sm font-medium" htmlFor="push-relay-url">
               {t('push.relay_label')}
-              {pushRelayLocked && (
-                <Lock className="w-3 h-3 text-muted-foreground" aria-label={t('push.relay_locked')} />
-              )}
             </label>
             <PushStatusBadge status={pushStatus} t={t} />
           </div>
-          <p className="text-xs text-muted-foreground">
-            {pushRelayLocked ? t('push.relay_locked_desc') : t('push.relay_desc')}
-          </p>
+          <p className="text-xs text-muted-foreground">{t('push.relay_desc')}</p>
           <input
             id="push-relay-url"
             type="url"
@@ -159,8 +140,7 @@ export function NotificationSettings() {
             value={relayUrl}
             onChange={(e) => setRelayUrl(e.target.value)}
             placeholder={t('push.relay_placeholder')}
-            disabled={busy || pushStatus.kind === 'unsupported' || pushRelayLocked}
-            readOnly={pushRelayLocked}
+            disabled={busy || pushStatus.kind === 'unsupported'}
             className="w-full rounded border bg-background px-3 py-2 text-sm disabled:opacity-50"
           />
           <div className="flex flex-wrap gap-2">

components/settings/themes-settings.tsx

@@ -1,10 +1,10 @@
 'use client';
 
-import { useEffect, useState } from 'react';
+import { useEffect } from 'react';
 import { useThemeStore } from '@/stores/theme-store';
 import { SettingsSection } from './settings-section';
 import { cn } from '@/lib/utils';
-import { Check, Lock } from 'lucide-react';
+import { Check, Palette, Lock } from 'lucide-react';
 import { toast } from '@/stores/toast-store';
 import { usePolicyStore } from '@/stores/policy-store';
 
@@ -14,18 +14,6 @@ export function ThemesSettings() {
   const themePolicy = getThemePolicy();
   const forcedThemeId = getForcedThemeId(installedThemes.map((theme) => theme.id));
 
-  // Render each preview in the variant matching the app's current mode, and
-  // keep it in sync when the user toggles light/dark elsewhere.
-  const [isDark, setIsDark] = useState(false);
-  useEffect(() => {
-    const root = document.documentElement;
-    const update = () => setIsDark(root.classList.contains('dark'));
-    update();
-    const obs = new MutationObserver(update);
-    obs.observe(root, { attributes: true, attributeFilter: ['class'] });
-    return () => obs.disconnect();
-  }, []);
-
   // Filter out themes disabled by admin policy
   const visibleThemes = installedThemes.filter(
     theme => !isThemeDisabled(theme.id, !!theme.builtIn)
@@ -48,9 +36,6 @@ export function ThemesSettings() {
   }, [activeThemeId, activateTheme, forcedThemeId, installedThemes, isThemeDisabled]);
 
   const handleActivate = (id: string | null) => {
-    // Clicking the already-active theme is a no-op (no re-apply, no toast).
-    if (id === activeThemeId) return;
-
     if (forcedThemeId && id !== forcedThemeId) {
       const forcedTheme = installedThemes.find((theme) => theme.id === forcedThemeId);
       toast.info(`Theme "${forcedTheme?.name ?? 'Admin theme'}" is forced by admin and cannot be changed`);
@@ -76,9 +61,6 @@ export function ThemesSettings() {
         <ThemeCard
           name="Default"
           author="Bulwark"
-          isDefaultTheme
-          variants={['light', 'dark']}
-          isDark={isDark}
           isActive={activeThemeId === null}
           isBuiltIn
           isDefault={!themePolicy.defaultThemeId}
@@ -95,8 +77,6 @@ export function ThemesSettings() {
               name={theme.name}
               author={theme.author}
               preview={theme.preview}
-              css={theme.css}
-              isDark={isDark}
               isActive={activeThemeId === theme.id}
               isBuiltIn={theme.builtIn}
               isDefault={themePolicy.defaultThemeId === theme.id}
@@ -118,9 +98,6 @@ interface ThemeCardProps {
   name: string;
   author: string;
   preview?: string;
-  css?: string;
-  isDark?: boolean;
-  isDefaultTheme?: boolean;
   isActive: boolean;
   isBuiltIn: boolean;
   isDefault?: boolean;
@@ -130,8 +107,7 @@ interface ThemeCardProps {
   onActivate: () => void;
 }
 
-function ThemeCard({ name, author, preview, css, isDark, isDefaultTheme, isActive, isDefault, isForceEnabled, disabled, variants, onActivate }: ThemeCardProps) {
-  const colors = resolveThemeColors({ css, variants, isDark: !!isDark, isDefaultTheme: !!isDefaultTheme });
+function ThemeCard({ name, author, preview, isActive, isDefault, isForceEnabled, disabled, variants, onActivate }: ThemeCardProps) {
   return (
     <div data-search-label={name} className="relative">
       <button
@@ -146,13 +122,12 @@ function ThemeCard({ name, author, preview, css, isDark, isDefaultTheme, isActiv
           disabled && !isActive && 'hover:border-border'
         )}
       >
-        {/* Preview: marketplace image when shipped, otherwise a mini app
-            mockup painted from the theme's own colour tokens. */}
-        <div className="w-full aspect-[16/10] rounded-lg mb-2 overflow-hidden bg-muted">
+        {/* Preview / Placeholder */}
+        <div className="w-full aspect-[16/10] rounded-lg mb-2 overflow-hidden bg-muted flex items-center justify-center">
           {preview ? (
             <img src={preview} alt={name} className="w-full h-full object-cover" />
           ) : (
-            <ThemePreview colors={colors} />
+            <Palette className="w-8 h-8 text-muted-foreground/40" />
           )}
         </div>
 
@@ -187,141 +162,3 @@ function ThemeCard({ name, author, preview, css, isDark, isDefaultTheme, isActiv
     </div>
   );
 }
-
-// ─── Theme Preview ───────────────────────────────────────────
-
-interface ThemeColors {
-  background: string;
-  sidebar: string;
-  card: string;
-  primary: string;
-  primaryForeground: string;
-  foreground: string;
-  mutedForeground: string;
-  border: string;
-}
-
-// The built-in "Default" theme has no `css` of its own (it's the app's base
-// tokens); these mirror app/globals.css so its card previews accurately.
-const DEFAULT_LIGHT: ThemeColors = {
-  background: '#ffffff', sidebar: '#f8fafc', card: '#ffffff', primary: '#3b82f6',
-  primaryForeground: '#ffffff', foreground: '#0f172a', mutedForeground: '#64748b', border: '#e2e8f0',
-};
-const DEFAULT_DARK: ThemeColors = {
-  background: '#0a0a0a', sidebar: '#0a0a0a', card: '#141414', primary: '#fafafa',
-  primaryForeground: '#171717', foreground: '#fafafa', mutedForeground: '#a3a3a3', border: '#262626',
-};
-
-// Pull a handful of structural colour tokens out of a theme's compiled CSS.
-// Themes declare light tokens under `:root { … }` and dark under `.dark { … }`;
-// neither block nests braces, so a non-greedy capture is enough.
-function extractThemeColors(css: string, dark: boolean): ThemeColors | null {
-  const block = css.match(dark ? /\.dark\s*\{([\s\S]*?)\}/ : /:root\s*\{([\s\S]*?)\}/);
-  if (!block) return null;
-  const body = block[1];
-  const get = (name: string): string | undefined => {
-    const m = body.match(new RegExp(`--color-${name}\\s*:\\s*([^;]+);`));
-    return m ? m[1].trim() : undefined;
-  };
-  const background = get('background');
-  if (!background) return null;
-  return {
-    background,
-    sidebar: get('sidebar') ?? background,
-    card: get('card') ?? background,
-    primary: get('primary') ?? '#888888',
-    primaryForeground: get('primary-foreground') ?? '#ffffff',
-    foreground: get('foreground') ?? '#000000',
-    mutedForeground: get('muted-foreground') ?? '#888888',
-    border: get('border') ?? 'rgba(128,128,128,0.3)',
-  };
-}
-
-function resolveThemeColors({ css, variants, isDark, isDefaultTheme }: {
-  css?: string;
-  variants?: ('light' | 'dark')[];
-  isDark: boolean;
-  isDefaultTheme: boolean;
-}): ThemeColors {
-  // Prefer the variant matching the app's current mode; fall back to the one
-  // the theme actually ships if it's single-variant.
-  const hasLight = !variants || variants.includes('light');
-  const hasDark = !variants || variants.includes('dark');
-  const wantDark = (isDark && hasDark) || !hasLight;
-
-  if (isDefaultTheme || !css) return wantDark ? DEFAULT_DARK : DEFAULT_LIGHT;
-  return (
-    extractThemeColors(css, wantDark) ??
-    extractThemeColors(css, !wantDark) ??
-    (wantDark ? DEFAULT_DARK : DEFAULT_LIGHT)
-  );
-}
-
-// A miniature of the real three-pane mailbox - icon nav rail, folder sidebar,
-// message list (first row selected) and reading pane - painted with the
-// theme's own colours, standing in for a screenshot.
-function ThemePreview({ colors }: { colors: ThemeColors }) {
-  const rail = `1px solid ${colors.border}`;
-  return (
-    <div className="w-full h-full flex overflow-hidden" style={{ backgroundColor: colors.background }}>
-      {/* Icon nav rail */}
-      <div
-        className="flex flex-col items-center gap-1 py-1.5 shrink-0"
-        style={{ width: '9%', backgroundColor: colors.sidebar, borderRight: rail }}
-      >
-        <div className="w-1.5 h-1.5 rounded-sm" style={{ backgroundColor: colors.primary }} />
-        {[0, 1, 2].map((i) => (
-          <div key={i} className="w-1.5 h-1.5 rounded-sm" style={{ backgroundColor: colors.mutedForeground, opacity: 0.4 }} />
-        ))}
-      </div>
-
-      {/* Folder sidebar */}
-      <div
-        className="flex flex-col gap-1 p-1.5 shrink-0"
-        style={{ width: '25%', backgroundColor: colors.sidebar, borderRight: rail }}
-      >
-        <div className="flex items-center gap-1 mb-0.5">
-          <div className="w-2 h-2 rounded-full shrink-0" style={{ backgroundColor: colors.mutedForeground, opacity: 0.5 }} />
-          <div className="h-1 rounded-full flex-1" style={{ backgroundColor: colors.foreground, opacity: 0.55 }} />
-        </div>
-        {[0.8, 0.65, 0.72, 0.5].map((w, i) => (
-          <div key={i} className="flex items-center gap-1">
-            <div className="w-1 h-1 rounded-sm shrink-0" style={{ backgroundColor: colors.mutedForeground, opacity: 0.45 }} />
-            <div className="h-1 rounded-full" style={{ width: `${w * 100}%`, backgroundColor: colors.mutedForeground, opacity: 0.4 }} />
-          </div>
-        ))}
-      </div>
-
-      {/* Message list */}
-      <div className="flex flex-col shrink-0" style={{ width: '36%', backgroundColor: colors.background, borderRight: rail }}>
-        {/* Selected row */}
-        <div className="flex items-start gap-1 p-1" style={{ backgroundColor: colors.primary }}>
-          <div className="w-2 h-2 rounded-full shrink-0" style={{ backgroundColor: colors.primaryForeground, opacity: 0.85 }} />
-          <div className="flex-1 flex flex-col gap-0.5">
-            <div className="h-1 rounded-full" style={{ width: '70%', backgroundColor: colors.primaryForeground, opacity: 0.9 }} />
-            <div className="h-1 rounded-full" style={{ width: '90%', backgroundColor: colors.primaryForeground, opacity: 0.55 }} />
-          </div>
-        </div>
-        {/* Unread + read rows */}
-        {[0.6, 0.7, 0.55].map((w, i) => (
-          <div key={i} className="flex items-start gap-1 p-1" style={{ borderTop: rail }}>
-            <div className="w-2 h-2 rounded-full shrink-0" style={{ backgroundColor: colors.mutedForeground, opacity: 0.4 }} />
-            <div className="flex-1 flex flex-col gap-0.5">
-              <div className="h-1 rounded-full" style={{ width: `${w * 100}%`, backgroundColor: colors.foreground, opacity: i === 0 ? 0.7 : 0.5 }} />
-              <div className="h-1 rounded-full" style={{ width: '85%', backgroundColor: colors.mutedForeground, opacity: 0.35 }} />
-            </div>
-          </div>
-        ))}
-      </div>
-
-      {/* Reading pane */}
-      <div className="flex-1 flex flex-col gap-1 p-1.5 min-w-0">
-        <div className="h-1.5 rounded-full" style={{ width: '70%', backgroundColor: colors.foreground, opacity: 0.85 }} />
-        <div className="h-1 rounded-full mb-1" style={{ width: '40%', backgroundColor: colors.mutedForeground, opacity: 0.5 }} />
-        {[0.95, 0.85, 0.9, 0.6].map((w, i) => (
-          <div key={i} className="h-1 rounded-full" style={{ width: `${w * 100}%`, backgroundColor: colors.mutedForeground, opacity: 0.3 }} />
-        ))}
-      </div>
-    </div>
-  );
-}

components/ui/avatar.tsx

@@ -270,15 +270,6 @@ export function Avatar({ name, email, contactPhotoUri, size = "md", className, d
           alt=""
           className="w-full h-full object-cover"
           onError={handleImgError}
-          // /api/favicon returns a 1x1 transparent PNG (HTTP 200) when no real
-          // favicon exists, to avoid spamming the DevTools console with 404s.
-          // Detect that sentinel by naturalWidth and fall back to initials.
-          onLoad={(e) => {
-            const img = e.currentTarget;
-            if (isFavicon && img.naturalWidth <= 1) {
-              handleImgError();
-            }
-          }}
         />
       ) : (
         getInitials()

components/ui/flag-icons.tsx

@@ -98,17 +98,6 @@ export function FlagDE(props: FlagProps) {
   );
 }
 
-/** Hungary – Red, White, Green horizontal */
-export function FlagHU(props: FlagProps) {
-  return (
-    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 6 3" width={W} height={H} className={flagClass} {...props}>
-      <rect width="6" height="1" fill="#CD2A3E" />
-      <rect y="1" width="6" height="1" fill="#fff" />
-      <rect y="2" width="6" height="1" fill="#436F4D" />
-    </svg>
-  );
-}
-
 /** Latvia – Maroon, White, Maroon horizontal */
 export function FlagLV(props: FlagProps) {
   return (
@@ -230,7 +219,6 @@ export const flagComponents: Record<string, (props: FlagProps) => ReactElement>
   en: FlagGB,
   es: FlagES,
   fr: FlagFR,
-  hu: FlagHU,
   it: FlagIT,
   ja: FlagJP,
   ko: FlagKR,

components/ui/language-switcher.tsx

@@ -15,7 +15,6 @@ const languages = [
   { value: 'es', label: 'Español' },
   { value: 'fr', label: 'Français' },
   { value: 'it', label: 'Italiano' },
-  { value: 'hu', label: 'Magyar' },
   { value: 'lv', label: 'Latviešu' },
   { value: 'nl', label: 'Nederlands' },
   { value: 'pl', label: 'Polski' },

hooks/use-mailbox-drop.ts

@@ -173,11 +173,7 @@ export function useMailboxDrop({ mailbox, onDropComplete, onSuccess, onError }:
         // import call to target the owner's JMAP account.
         const jmapDestId = mailbox.originalId || mailbox.id;
         const destJmapOverride = mailbox.isShared ? mailbox.accountId : undefined;
-        // Mirror image for the source: a shared group mailbox is accessed
-        // through the viewing user's client, but the email/blob live in the
-        // owner's JMAP account, so the copy/delete must target it.
-        const sourceJmapOverride = sourceMb?.isShared ? sourceMb.accountId : undefined;
-        await crossAccountMoveEmails(bySource, destAccountId, jmapDestId, destJmapOverride, sourceJmapOverride);
+        await crossAccountMoveEmails(bySource, destAccountId, jmapDestId, destJmapOverride);
       } else {
         // Single-account or same-account-shared move: bulk JMAP request.
         await moveEmailsToMailbox(client, emailIds, mailbox.id);

i18n/routing.ts

@@ -12,7 +12,7 @@ const localePrefix = (process.env.NEXT_PUBLIC_LOCALE_PREFIX ?? 'never') as
   | 'always'
   | 'as-needed';
 
-const SUPPORTED_LOCALES = ['cs', 'da', 'de', 'en', 'es', 'fr', 'hu', 'it', 'ja', 'ko', 'lv', 'nl', 'pl', 'pt', 'ru', 'tr', 'uk', 'zh'] as const;
+const SUPPORTED_LOCALES = ['cs', 'da', 'de', 'en', 'es', 'fr', 'it', 'ja', 'ko', 'lv', 'nl', 'pl', 'pt', 'ru', 'tr', 'uk', 'zh'] as const;
 
 // Fallback locale used when the visitor's Accept-Language header does not
 // match any supported locale (and no NEXT_LOCALE cookie is set yet). Admins

lib/__tests__/base-path.test.ts

@@ -1,74 +0,0 @@
-import { describe, it, expect, vi, afterEach } from 'vitest';
-
-// `browser-navigation` reads NEXT_PUBLIC_BASE_PATH into a module-load constant
-// (mirroring how next.config.ts bakes basePath in at build time), so each case
-// has to re-import the module under a fresh env. These tests pin down the
-// promise made to subpath deployments: the built-in branding *defaults*
-// (FAVICON_URL, LOGIN_LOGO_*) — not just admin-set custom values — get the
-// mount prefix, because every consumer wraps them in withBasePath(). See #330.
-async function loadNav(basePath?: string) {
-  vi.resetModules();
-  if (basePath === undefined) {
-    delete process.env.NEXT_PUBLIC_BASE_PATH;
-  } else {
-    process.env.NEXT_PUBLIC_BASE_PATH = basePath;
-  }
-  return import('@/lib/browser-navigation');
-}
-
-// The fallback values from CONFIG_ENV_MAP that ship in the box.
-const DEFAULT_FAVICON = '/branding/Bulwark_Favicon.svg';
-const DEFAULT_LOGIN_LOGO_LIGHT = '/branding/Bulwark_Logo_Color.svg';
-const DEFAULT_LOGIN_LOGO_DARK = '/branding/Bulwark_Logo_White.svg';
-
-afterEach(() => {
-  delete process.env.NEXT_PUBLIC_BASE_PATH;
-  vi.resetModules();
-});
-
-describe('withBasePath — asset-URL fallbacks under a subpath', () => {
-  it('leaves branding defaults untouched when no base path is set', async () => {
-    const { withBasePath } = await loadNav(undefined);
-    // jsdom's window.location.pathname is "/", so runtime detection finds no
-    // prefix either — the default paths pass through unchanged.
-    expect(withBasePath(DEFAULT_FAVICON)).toBe(DEFAULT_FAVICON);
-    expect(withBasePath(DEFAULT_LOGIN_LOGO_LIGHT)).toBe(DEFAULT_LOGIN_LOGO_LIGHT);
-    expect(withBasePath(DEFAULT_LOGIN_LOGO_DARK)).toBe(DEFAULT_LOGIN_LOGO_DARK);
-  });
-
-  it('prefixes the built-in favicon and login-logo defaults', async () => {
-    const { withBasePath } = await loadNav('/webmail');
-    expect(withBasePath(DEFAULT_FAVICON)).toBe('/webmail/branding/Bulwark_Favicon.svg');
-    expect(withBasePath(DEFAULT_LOGIN_LOGO_LIGHT)).toBe('/webmail/branding/Bulwark_Logo_Color.svg');
-    expect(withBasePath(DEFAULT_LOGIN_LOGO_DARK)).toBe('/webmail/branding/Bulwark_Logo_White.svg');
-  });
-
-  it('is idempotent for an already-prefixed value (no double prefix)', async () => {
-    const { withBasePath } = await loadNav('/webmail');
-    expect(withBasePath('/webmail/branding/Bulwark_Favicon.svg')).toBe('/webmail/branding/Bulwark_Favicon.svg');
-    expect(withBasePath('/webmail')).toBe('/webmail');
-  });
-
-  it('passes through external, protocol-relative, data, and empty values', async () => {
-    const { withBasePath } = await loadNav('/webmail');
-    expect(withBasePath('https://cdn.example.com/logo.svg')).toBe('https://cdn.example.com/logo.svg');
-    expect(withBasePath('//cdn.example.com/logo.svg')).toBe('//cdn.example.com/logo.svg');
-    expect(withBasePath('data:image/svg+xml,<svg/>')).toBe('data:image/svg+xml,<svg/>');
-    expect(withBasePath('')).toBe('');
-    expect(withBasePath(null)).toBe('');
-    expect(withBasePath(undefined)).toBe('');
-  });
-
-  it('strips a trailing slash on the configured base path', async () => {
-    const { withBasePath, getPathPrefix } = await loadNav('/webmail/');
-    expect(getPathPrefix()).toBe('/webmail');
-    expect(withBasePath(DEFAULT_FAVICON)).toBe('/webmail/branding/Bulwark_Favicon.svg');
-  });
-
-  it('getPathPrefix reports the static base path on the server (no window needed)', async () => {
-    const { getPathPrefix } = await loadNav('/webmail');
-    // SSR consumers (layout.tsx favicon metadata, manifest.ts) rely on this
-    // resolving from the build-time constant rather than window.location.
-    expect(getPathPrefix()).toBe('/webmail');
-  });
-});

lib/__tests__/builtin-themes.test.ts

@@ -2,8 +2,8 @@ import { describe, it, expect } from 'vitest';
 import { BUILTIN_THEMES } from '../builtin-themes';
 
 describe('BUILTIN_THEMES', () => {
-  it('contains exactly 6 themes', () => {
-    expect(BUILTIN_THEMES).toHaveLength(6);
+  it('contains exactly 3 themes', () => {
+    expect(BUILTIN_THEMES).toHaveLength(3);
   });
 
   it('all themes have required fields', () => {
@@ -43,8 +43,6 @@ describe('BUILTIN_THEMES', () => {
     expect(names).toContain('Nord');
     expect(names).toContain('Catppuccin');
     expect(names).toContain('Solarized');
-    expect(names).toContain('Roundcube Elastic');
-    expect(names).toContain('Aurora Glass');
   });
 
   it('theme IDs are unique', () => {

lib/__tests__/config-route.test.ts

@@ -36,29 +36,16 @@ describe('config API route', () => {
     delete process.env.LOGIN_IMPRINT_URL;
     delete process.env.LOGIN_PRIVACY_POLICY_URL;
     delete process.env.LOGIN_WEBSITE_URL;
-    delete process.env.DOMAIN_BRANDING;
   });
 
   afterEach(() => {
     process.env = { ...originalEnv };
   });
 
-  function mockRequest(headers: Record<string, string> = {}): unknown {
-    const lc: Record<string, string> = {};
-    for (const [k, v] of Object.entries(headers)) lc[k.toLowerCase()] = v;
-    return {
-      headers: {
-        get(name: string) {
-          return lc[name.toLowerCase()] ?? null;
-        },
-      },
-    };
-  }
-
-  async function getConfig(headers?: Record<string, string>) {
+  async function getConfig() {
     // Re-import to pick up env changes
     const { GET } = await import('@/app/api/config/route');
-    const response = await GET(mockRequest(headers) as Parameters<typeof GET>[0]);
+    const response = await GET();
     return response.json();
   }
 
@@ -205,70 +192,4 @@ describe('config API route', () => {
     expect(config.appLogoLightUrl).toBe('/branding/my-logo.svg');
     expect(config.appLogoDarkUrl).toBe('/branding/my-logo-white.svg');
   });
-
-  describe('per-domain branding overrides', () => {
-    it('applies overrides for the matching host', async () => {
-      process.env.LOGIN_COMPANY_NAME = 'Default Co';
-      process.env.LOGIN_WEBSITE_URL = 'https://default.example';
-      process.env.DOMAIN_BRANDING = JSON.stringify([
-        {
-          host: 'mail1.example.com',
-          loginCompanyName: 'Brand One',
-          loginWebsiteUrl: 'https://one.example',
-        },
-      ]);
-
-      const config = await getConfig({ host: 'mail1.example.com' });
-
-      expect(config.loginCompanyName).toBe('Brand One');
-      expect(config.loginWebsiteUrl).toBe('https://one.example');
-    });
-
-    it('falls through to the global value when the host has no entry', async () => {
-      process.env.LOGIN_COMPANY_NAME = 'Default Co';
-      process.env.DOMAIN_BRANDING = JSON.stringify([
-        { host: 'mail1.example.com', loginCompanyName: 'Brand One' },
-      ]);
-
-      const config = await getConfig({ host: 'unmapped.example.com' });
-
-      expect(config.loginCompanyName).toBe('Default Co');
-    });
-
-    it('falls through field-by-field when the matching entry omits a field', async () => {
-      process.env.LOGIN_COMPANY_NAME = 'Default Co';
-      process.env.LOGIN_WEBSITE_URL = 'https://default.example';
-      process.env.DOMAIN_BRANDING = JSON.stringify([
-        { host: 'mail1.example.com', loginCompanyName: 'Brand One' },
-      ]);
-
-      const config = await getConfig({ host: 'mail1.example.com' });
-
-      expect(config.loginCompanyName).toBe('Brand One');
-      expect(config.loginWebsiteUrl).toBe('https://default.example');
-    });
-
-    it('prefers X-Forwarded-Host over Host', async () => {
-      process.env.DOMAIN_BRANDING = JSON.stringify([
-        { host: 'public.example.com', loginCompanyName: 'Public' },
-      ]);
-
-      const config = await getConfig({
-        host: 'internal.example.com',
-        'x-forwarded-host': 'public.example.com',
-      });
-
-      expect(config.loginCompanyName).toBe('Public');
-    });
-
-    it('strips the port from the host header before matching', async () => {
-      process.env.DOMAIN_BRANDING = JSON.stringify([
-        { host: 'mail1.example.com', loginCompanyName: 'Brand One' },
-      ]);
-
-      const config = await getConfig({ host: 'mail1.example.com:8443' });
-
-      expect(config.loginCompanyName).toBe('Brand One');
-    });
-  });
 });

lib/__tests__/domain-branding.test.ts

@@ -1,151 +0,0 @@
-import { describe, it, expect } from 'vitest';
-import {
-  matchDomainBranding,
-  parseDomainBranding,
-  pickRequestHost,
-  type DomainBrandingEntry,
-} from '@/lib/admin/domain-branding';
-
-function mockHeaders(map: Record<string, string>): Headers {
-  const lc: Record<string, string> = {};
-  for (const [k, v] of Object.entries(map)) lc[k.toLowerCase()] = v;
-  return {
-    get(name: string) {
-      return lc[name.toLowerCase()] ?? null;
-    },
-  } as unknown as Headers;
-}
-
-describe('parseDomainBranding', () => {
-  it('returns [] for null/undefined/empty', () => {
-    expect(parseDomainBranding(null)).toEqual([]);
-    expect(parseDomainBranding(undefined)).toEqual([]);
-    expect(parseDomainBranding('')).toEqual([]);
-    expect(parseDomainBranding([])).toEqual([]);
-  });
-
-  it('parses a stringified JSON array', () => {
-    const raw = JSON.stringify([{ host: 'mail.example.com', loginCompanyName: 'Acme' }]);
-    expect(parseDomainBranding(raw)).toEqual([
-      { host: 'mail.example.com', loginCompanyName: 'Acme' },
-    ]);
-  });
-
-  it('lower-cases hosts and strips trailing dots', () => {
-    expect(parseDomainBranding([{ host: 'Mail.Example.COM.' }])).toEqual([
-      { host: 'mail.example.com' },
-    ]);
-  });
-
-  it('accepts wildcard hosts', () => {
-    expect(parseDomainBranding([{ host: '*.example.com', loginCompanyName: 'Wild' }])).toEqual([
-      { host: '*.example.com', loginCompanyName: 'Wild' },
-    ]);
-  });
-
-  it('drops entries with invalid hosts', () => {
-    const out = parseDomainBranding([
-      { host: '' },
-      { host: 'has space.com' },
-      { host: 'foo..bar' },
-      { host: '*.*.example.com' }, // embedded wildcard not allowed
-      { host: 'good.example.com' },
-    ]);
-    expect(out.map(e => e.host)).toEqual(['good.example.com']);
-  });
-
-  it('drops duplicate hosts, keeping the first', () => {
-    const out = parseDomainBranding([
-      { host: 'foo.com', loginCompanyName: 'First' },
-      { host: 'FOO.com', loginCompanyName: 'Second' },
-    ]);
-    expect(out).toEqual([{ host: 'foo.com', loginCompanyName: 'First' }]);
-  });
-
-  it('ignores non-string and empty-string override fields', () => {
-    const out = parseDomainBranding([
-      {
-        host: 'foo.com',
-        loginCompanyName: '',
-        loginImprintUrl: 42,
-        loginWebsiteUrl: 'https://foo.com',
-      },
-    ]);
-    expect(out).toEqual([{ host: 'foo.com', loginWebsiteUrl: 'https://foo.com' }]);
-  });
-
-  it('ignores unknown fields', () => {
-    const out = parseDomainBranding([
-      { host: 'foo.com', notARealField: 'x', loginCompanyName: 'OK' },
-    ]);
-    expect(out).toEqual([{ host: 'foo.com', loginCompanyName: 'OK' }]);
-  });
-});
-
-describe('pickRequestHost', () => {
-  it('returns null when no host headers are set', () => {
-    expect(pickRequestHost(mockHeaders({}))).toBeNull();
-  });
-
-  it('prefers X-Forwarded-Host over Host', () => {
-    expect(pickRequestHost(mockHeaders({
-      'x-forwarded-host': 'forwarded.example.com',
-      host: 'origin.example.com',
-    }))).toBe('forwarded.example.com');
-  });
-
-  it('falls back to Host when X-Forwarded-Host is absent', () => {
-    expect(pickRequestHost(mockHeaders({ host: 'origin.example.com' }))).toBe('origin.example.com');
-  });
-
-  it('strips the port', () => {
-    expect(pickRequestHost(mockHeaders({ host: 'example.com:8080' }))).toBe('example.com');
-  });
-
-  it('takes the first entry of a comma-separated X-Forwarded-Host', () => {
-    expect(pickRequestHost(mockHeaders({
-      'x-forwarded-host': 'first.example.com, second.example.com',
-    }))).toBe('first.example.com');
-  });
-
-  it('lower-cases the result', () => {
-    expect(pickRequestHost(mockHeaders({ host: 'EXAMPLE.com' }))).toBe('example.com');
-  });
-});
-
-describe('matchDomainBranding', () => {
-  const entries: DomainBrandingEntry[] = [
-    { host: 'mail.example.com', loginCompanyName: 'Exact' },
-    { host: '*.example.com', loginCompanyName: 'Wildcard' },
-    { host: '*.dev.example.com', loginCompanyName: 'Specific Wildcard' },
-    { host: 'other.com', loginCompanyName: 'Other' },
-  ];
-
-  it('returns {} when host is null', () => {
-    expect(matchDomainBranding(null, entries)).toEqual({});
-  });
-
-  it('returns {} when no entries match', () => {
-    expect(matchDomainBranding('unknown.org', entries)).toEqual({});
-  });
-
-  it('prefers exact match over wildcard', () => {
-    expect(matchDomainBranding('mail.example.com', entries).loginCompanyName).toBe('Exact');
-  });
-
-  it('matches wildcards on subdomains', () => {
-    expect(matchDomainBranding('foo.example.com', entries).loginCompanyName).toBe('Wildcard');
-  });
-
-  it('prefers the longest wildcard suffix', () => {
-    expect(matchDomainBranding('app.dev.example.com', entries).loginCompanyName).toBe('Specific Wildcard');
-  });
-
-  it('does not match the wildcard host against the apex domain', () => {
-    expect(matchDomainBranding('example.com', entries)).toEqual({});
-  });
-
-  it('is case-insensitive on the request host', () => {
-    expect(matchDomainBranding('Mail.Example.COM', entries).loginCompanyName).toBe('Exact');
-  });
-});

lib/__tests__/email-headers.test.ts

@@ -7,7 +7,6 @@ import {
   getSecurityStatus,
   parseSpamLLM,
   extractListHeaders,
-  isAuthenticationSpoofed,
 } from '../email-headers';
 
 describe('parseAuthenticationResults', () => {
@@ -53,66 +52,6 @@ describe('parseAuthenticationResults', () => {
     const result = parseAuthenticationResults('spf=softfail smtp.mailfrom=example.com');
     expect(result.spf?.result).toBe('softfail');
   });
-
-  it('surfaces the most severe result when multiple SPF identities exist', () => {
-    // HELO temperror, MAIL FROM fail — the harder fail must be the headline.
-    const header =
-      'mx.example.com; spf=temperror (mx: dns timeout) smtp.helo=mail.spoof.com; spf=fail (mx: not authorized) smtp.mailfrom=victim.com';
-    const result = parseAuthenticationResults(header);
-    expect(result.spf?.result).toBe('fail');
-    expect(result.spf?.domain).toBe('victim.com');
-  });
-
-  it('exposes all SPF results when more than one identity is evaluated', () => {
-    const header =
-      'spf=temperror smtp.helo=mail.spoof.com; spf=fail smtp.mailfrom=victim.com';
-    const result = parseAuthenticationResults(header);
-    expect(result.spf?.all).toEqual([
-      { result: 'temperror', identity: 'helo', domain: 'mail.spoof.com' },
-      { result: 'fail', identity: 'mailfrom', domain: 'victim.com' },
-    ]);
-  });
-
-  it('does not set `all` for a single SPF result', () => {
-    const result = parseAuthenticationResults('spf=pass smtp.mailfrom=example.com');
-    expect(result.spf?.all).toBeUndefined();
-  });
-
-  it('prefers the MAIL FROM identity when severities tie', () => {
-    const header = 'spf=pass smtp.helo=mail.example.com; spf=pass smtp.mailfrom=example.com';
-    const result = parseAuthenticationResults(header);
-    expect(result.spf?.domain).toBe('example.com');
-  });
-});
-
-describe('isAuthenticationSpoofed', () => {
-  it('returns false when no auth results are present', () => {
-    expect(isAuthenticationSpoofed(undefined)).toBe(false);
-    expect(isAuthenticationSpoofed({})).toBe(false);
-  });
-
-  it('flags a DMARC fail as spoofed', () => {
-    expect(isAuthenticationSpoofed({ dmarc: { result: 'fail' } })).toBe(true);
-  });
-
-  it('flags a hard SPF fail without a passing DKIM as spoofed', () => {
-    expect(isAuthenticationSpoofed({ spf: { result: 'fail' } })).toBe(true);
-    expect(
-      isAuthenticationSpoofed({ spf: { result: 'fail' }, dkim: { result: 'fail' } })
-    ).toBe(true);
-  });
-
-  it('does not flag an SPF fail rescued by a passing DKIM', () => {
-    expect(
-      isAuthenticationSpoofed({ spf: { result: 'fail' }, dkim: { result: 'pass' } })
-    ).toBe(false);
-  });
-
-  it('does not flag passing or ambiguous results', () => {
-    expect(isAuthenticationSpoofed({ spf: { result: 'pass' }, dmarc: { result: 'pass' } })).toBe(false);
-    expect(isAuthenticationSpoofed({ spf: { result: 'softfail' } })).toBe(false);
-    expect(isAuthenticationSpoofed({ spf: { result: 'temperror' } })).toBe(false);
-  });
 });
 
 describe('parseSpamScore', () => {

lib/__tests__/host-theme.test.ts

@@ -1,43 +0,0 @@
-import { describe, it, expect, afterEach } from 'vitest';
-import { snapshotHostTheme, themeSnapshotToCSS, type ThemeSnapshot } from '../plugin-sandbox/host-theme';
-
-describe('host-theme', () => {
-  describe('themeSnapshotToCSS', () => {
-    it('emits the token values, font, and color-scheme', () => {
-      const snapshot: ThemeSnapshot = {
-        dark: false,
-        fontFamily: 'Inter, sans-serif',
-        vars: { '--color-background': '#ffffff', '--color-foreground': '#0f172a' },
-      };
-      const css = themeSnapshotToCSS(snapshot);
-      expect(css).toContain('--color-background: #ffffff;');
-      expect(css).toContain('--color-foreground: #0f172a;');
-      expect(css).toContain('font-family: Inter, sans-serif;');
-      expect(css).toContain('color-scheme: light;');
-      // Body inherits the theme foreground so unstyled plugin text adapts.
-      expect(css).toContain('color: var(--color-foreground, inherit);');
-      expect(css).toContain('background: transparent;');
-    });
-
-    it('reports a dark color-scheme when dark', () => {
-      const css = themeSnapshotToCSS({ dark: true, fontFamily: 'sans-serif', vars: {} });
-      expect(css).toContain('color-scheme: dark;');
-    });
-  });
-
-  describe('snapshotHostTheme', () => {
-    afterEach(() => {
-      document.documentElement.classList.remove('dark');
-      document.documentElement.removeAttribute('style');
-    });
-
-    it('reads the dark flag and declared tokens off <html>', () => {
-      document.documentElement.classList.add('dark');
-      document.documentElement.style.setProperty('--color-background', '#0a0a0a');
-      const snapshot = snapshotHostTheme();
-      expect(snapshot.dark).toBe(true);
-      expect(snapshot.vars['--color-background']).toBe('#0a0a0a');
-      expect(snapshot.fontFamily).toBeTruthy();
-    });
-  });
-});

lib/__tests__/oauth-metadata-route.test.ts

@@ -1,101 +0,0 @@
-import { describe, it, expect, vi, beforeEach } from 'vitest';
-import type { OAuthMetadata } from '../oauth/discovery';
-
-// Capture status/headers from NextResponse.json (the shared config-route mock
-// drops them, but this route's behavior depends on the status code).
-vi.mock('next/server', () => ({
-  NextResponse: {
-    json: (data: unknown, init?: { status?: number; headers?: Record<string, string> }) => ({
-      json: async () => data,
-      status: init?.status ?? 200,
-      headers: init?.headers ?? {},
-    }),
-  },
-}));
-
-vi.mock('@/lib/logger', () => ({
-  logger: { warn: vi.fn(), error: vi.fn(), debug: vi.fn() },
-}));
-
-vi.mock('@/lib/admin/config-manager', () => ({
-  configManager: { ensureLoaded: vi.fn().mockResolvedValue(undefined) },
-}));
-
-const getMetadata = vi.fn();
-const getRequiredConfig = vi.fn();
-vi.mock('@/lib/oauth/token-exchange', () => ({
-  getMetadata: (...args: unknown[]) => getMetadata(...args),
-  getRequiredConfig: (...args: unknown[]) => getRequiredConfig(...args),
-}));
-
-const VALID_METADATA: OAuthMetadata = {
-  issuer: 'https://auth.example.com',
-  authorization_endpoint: 'https://auth.example.com/authorize',
-  token_endpoint: 'https://auth.example.com/token',
-};
-
-function mockRequest(serverId?: string): unknown {
-  return {
-    nextUrl: {
-      searchParams: { get: (k: string) => (k === 'server_id' ? serverId ?? null : null) },
-    },
-  };
-}
-
-async function callRoute(serverId?: string) {
-  const { GET } = await import('@/app/api/auth/oauth/metadata/route');
-  const res = (await GET(mockRequest(serverId) as Parameters<typeof GET>[0])) as unknown as {
-    status: number;
-    headers: Record<string, string>;
-    json: () => Promise<Record<string, unknown>>;
-  };
-  return { status: res.status, headers: res.headers, body: await res.json() };
-}
-
-describe('oauth metadata route', () => {
-  beforeEach(() => {
-    vi.clearAllMocks();
-    getRequiredConfig.mockReturnValue({ discoveryUrl: 'https://auth.example.com' });
-  });
-
-  it('returns discovered metadata for the resolved server', async () => {
-    getMetadata.mockResolvedValue(VALID_METADATA);
-
-    const { status, body, headers } = await callRoute('server-1');
-
-    expect(status).toBe(200);
-    expect(body).toEqual(VALID_METADATA);
-    expect(headers['Cache-Control']).toContain('max-age=600');
-    expect(getMetadata).toHaveBeenCalledWith('server-1');
-  });
-
-  it('returns 404 when OAuth is not configured', async () => {
-    getRequiredConfig.mockImplementation(() => {
-      throw new Error('OAuth misconfigured: OAUTH_CLIENT_ID not set');
-    });
-
-    const { status, body } = await callRoute();
-
-    expect(status).toBe(404);
-    expect(body).toEqual({ error: 'OAuth not configured' });
-    expect(getMetadata).not.toHaveBeenCalled();
-  });
-
-  it('returns 502 when discovery yields no usable endpoints', async () => {
-    getMetadata.mockResolvedValue(null);
-
-    const { status, body } = await callRoute();
-
-    expect(status).toBe(502);
-    expect(body).toEqual({ error: 'OAuth discovery failed' });
-  });
-
-  it('returns 502 when discovery throws', async () => {
-    getMetadata.mockRejectedValue(new Error('network down'));
-
-    const { status, body } = await callRoute();
-
-    expect(status).toBe(502);
-    expect(body).toEqual({ error: 'OAuth discovery failed' });
-  });
-});

lib/__tests__/shared-calendar-colors.test.ts

@@ -1,77 +0,0 @@
-import { describe, it, expect } from 'vitest';
-import type { Calendar } from '@/lib/jmap/types';
-import {
-  CALENDAR_COLORS,
-  sharedCalendarColorKey,
-  pickUnusedCalendarColor,
-} from '../shared-calendar-colors';
-
-function makeCal(overrides: Partial<Calendar>): Calendar {
-  return {
-    id: 'cal-1',
-    name: 'Cal',
-    description: null,
-    color: null,
-    sortOrder: 0,
-    isSubscribed: true,
-    isVisible: true,
-    isDefault: false,
-    includeInAvailability: 'all',
-    defaultAlertsWithTime: null,
-    defaultAlertsWithoutTime: null,
-    timeZone: null,
-    shareWith: null,
-    myRights: {} as Calendar['myRights'],
-    ...overrides,
-  };
-}
-
-describe('sharedCalendarColorKey', () => {
-  it('is built from local account, JMAP account, and the original id', () => {
-    const cal = makeCal({
-      id: 'acct-9:cal-7',
-      originalId: 'cal-7',
-      accountId: 'acct-9',
-      localAccountId: 'slot-2',
-    });
-    expect(sharedCalendarColorKey(cal)).toBe('slot-2|acct-9|cal-7');
-  });
-
-  it('is stable regardless of the Pro-shell id prefix', () => {
-    // Same underlying calendar, shown once under the active account (bare id)
-    // and once cross-account (prefixed id) - both must map to one key.
-    const active = makeCal({ id: 'acct-9:cal-7', originalId: 'cal-7', accountId: 'acct-9', localAccountId: 'slot-2' });
-    const prefixed = makeCal({ id: 'slot-2::acct-9:cal-7', originalId: 'cal-7', accountId: 'acct-9', localAccountId: 'slot-2' });
-    expect(sharedCalendarColorKey(active)).toBe(sharedCalendarColorKey(prefixed));
-  });
-
-  it('falls back to the id when originalId is absent', () => {
-    const cal = makeCal({ id: 'cal-7', accountId: 'acct-9' });
-    expect(sharedCalendarColorKey(cal)).toBe('|acct-9|cal-7');
-  });
-});
-
-describe('pickUnusedCalendarColor', () => {
-  it('returns a palette color not present in usedColors', () => {
-    const used = CALENDAR_COLORS.slice(0, CALENDAR_COLORS.length - 1);
-    const picked = pickUnusedCalendarColor(used);
-    expect(picked).toBe(CALENDAR_COLORS[CALENDAR_COLORS.length - 1]);
-  });
-
-  it('ignores case when comparing used colors', () => {
-    const used = CALENDAR_COLORS.slice(0, -1).map((c) => c.toUpperCase());
-    expect(pickUnusedCalendarColor(used)).toBe(CALENDAR_COLORS[CALENDAR_COLORS.length - 1]);
-  });
-
-  it('still returns a palette color once every color is taken', () => {
-    expect(CALENDAR_COLORS).toContain(pickUnusedCalendarColor(CALENDAR_COLORS));
-  });
-
-  it('always returns a valid palette color for a small used set', () => {
-    for (let i = 0; i < 50; i++) {
-      const picked = pickUnusedCalendarColor(['#3b82f6']);
-      expect(CALENDAR_COLORS).toContain(picked);
-      expect(picked).not.toBe('#3b82f6');
-    }
-  });
-});

lib/__tests__/signature-utils.test.ts

@@ -1,7 +1,6 @@
 import { describe, expect, it } from 'vitest';
 
 import {
-  appendHtmlSignature,
   appendPlainTextSignature,
   getPlainTextSignature,
   hasMeaningfulHtmlBody,
@@ -28,27 +27,6 @@ describe('signature-utils', () => {
     });
   });
 
-  describe('appendHtmlSignature', () => {
-    it('appends a sanitized html signature, preserving formatting', () => {
-      expect(appendHtmlSignature('<div>Hello</div>', { htmlSignature: '<strong>Alice</strong>' }))
-        .toBe('<div>Hello</div><br><br>-- <br><strong>Alice</strong>');
-    });
-
-    it('escapes and appends a text signature when no html signature exists', () => {
-      expect(appendHtmlSignature('<div>Hello</div>', { textSignature: 'Alice\nEng' }))
-        .toBe('<div>Hello</div><br><br>-- <br>Alice<br>Eng');
-    });
-
-    it('omits the separator marker when disabled', () => {
-      expect(appendHtmlSignature('<div>Hi</div>', { htmlSignature: '<strong>A</strong>' }, { separator: false }))
-        .toBe('<div>Hi</div><br><br><strong>A</strong>');
-    });
-
-    it('leaves the body untouched when no signature exists', () => {
-      expect(appendHtmlSignature('<div>Hi</div>', {})).toBe('<div>Hi</div>');
-    });
-  });
-
   describe('hasMeaningfulHtmlBody', () => {
     it('prefers html bodies that preserve signature formatting', () => {
       expect(hasMeaningfulHtmlBody('<div>Hello</div><br><p>Alice</p>')).toBe(true);

lib/admin/domain-branding.ts

@@ -1,148 +0,0 @@
-/**
- * Per-domain branding overrides: schema, parsing, host extraction, and match.
- *
- * The webmail can be served on multiple hostnames (e.g. mail1.example.com,
- * mail2.other.com). Each hostname can override a subset of branding fields;
- * unset fields fall back to the global admin/env/default value.
- */
-
-import type { NextRequest } from 'next/server';
-
-/** Config keys that can be overridden per domain. */
-export const BRANDING_OVERRIDE_KEYS = [
-  'appName',
-  'appShortName',
-  'appDescription',
-  'faviconUrl',
-  'pwaIconUrl',
-  'pwaScreenshotMobileUrl',
-  'pwaScreenshotDesktopUrl',
-  'pwaThemeColor',
-  'pwaBackgroundColor',
-  'appLogoLightUrl',
-  'appLogoDarkUrl',
-  'loginLogoLightUrl',
-  'loginLogoDarkUrl',
-  'loginCompanyName',
-  'loginImprintUrl',
-  'loginPrivacyPolicyUrl',
-  'loginWebsiteUrl',
-] as const;
-
-export type BrandingOverrideKey = (typeof BRANDING_OVERRIDE_KEYS)[number];
-
-export interface DomainBrandingEntry {
-  /**
-   * Hostname this entry applies to. Either an exact host like
-   * "mail.example.com" or a wildcard like "*.example.com" (matches any
-   * direct or deeper subdomain). Case-insensitive; trailing dots are
-   * stripped on parse.
-   */
-  host: string;
-  appName?: string;
-  appShortName?: string;
-  appDescription?: string;
-  faviconUrl?: string;
-  pwaIconUrl?: string;
-  pwaScreenshotMobileUrl?: string;
-  pwaScreenshotDesktopUrl?: string;
-  pwaThemeColor?: string;
-  pwaBackgroundColor?: string;
-  appLogoLightUrl?: string;
-  appLogoDarkUrl?: string;
-  loginLogoLightUrl?: string;
-  loginLogoDarkUrl?: string;
-  loginCompanyName?: string;
-  loginImprintUrl?: string;
-  loginPrivacyPolicyUrl?: string;
-  loginWebsiteUrl?: string;
-}
-
-// Accepts plain hostnames (foo, foo.bar, foo.bar.baz) and one-level wildcards
-// at the leftmost label (*.example.com). Rejects IPs, scheme/path/userinfo,
-// and embedded wildcards.
-const HOST_RE = /^(\*\.)?[a-z0-9]([a-z0-9-]*[a-z0-9])?(\.[a-z0-9]([a-z0-9-]*[a-z0-9])?)*$/;
-
-function normalizeHost(host: string): string {
-  return host.trim().toLowerCase().replace(/\.+$/, '');
-}
-
-/** Parse the raw config value (array of entries, or string-JSON). Invalid entries are dropped. */
-export function parseDomainBranding(raw: unknown): DomainBrandingEntry[] {
-  if (!raw) return [];
-  let value = raw;
-  if (typeof value === 'string') {
-    if (!value.trim()) return [];
-    try {
-      value = JSON.parse(value);
-    } catch {
-      return [];
-    }
-  }
-  if (!Array.isArray(value)) return [];
-
-  const seen = new Set<string>();
-  const out: DomainBrandingEntry[] = [];
-  for (const item of value) {
-    if (!item || typeof item !== 'object') continue;
-    const rec = item as Record<string, unknown>;
-    const rawHost = typeof rec.host === 'string' ? rec.host : '';
-    const host = normalizeHost(rawHost);
-    if (!host || !HOST_RE.test(host)) continue;
-    if (seen.has(host)) continue;
-    seen.add(host);
-
-    const entry: DomainBrandingEntry = { host };
-    const writable = entry as unknown as Record<string, string>;
-    for (const key of BRANDING_OVERRIDE_KEYS) {
-      const v = rec[key];
-      if (typeof v === 'string' && v.length > 0) {
-        writable[key] = v;
-      }
-    }
-    out.push(entry);
-  }
-  return out;
-}
-
-type HeadersLike = Headers | { get(name: string): string | null };
-
-/**
- * Pick the request's host, preferring X-Forwarded-Host (first entry if
- * comma-separated) over Host. Strips the port. Returns null when no usable
- * host header is set.
- */
-export function pickRequestHost(headersOrReq: NextRequest | HeadersLike): string | null {
-  const headers: HeadersLike = 'headers' in headersOrReq ? (headersOrReq as NextRequest).headers : headersOrReq;
-  const raw = headers.get('x-forwarded-host') || headers.get('host');
-  if (!raw) return null;
-  const first = raw.split(',')[0]?.trim();
-  if (!first) return null;
-  return normalizeHost(first.split(':')[0]);
-}
-
-/**
- * Find the entry whose host matches `host`. Exact match always wins; among
- * wildcards the longest (most-specific) suffix wins. Returns {} when no
- * entry matches.
- */
-export function matchDomainBranding(
-  host: string | null,
-  entries: DomainBrandingEntry[],
-): Partial<DomainBrandingEntry> {
-  if (!host || entries.length === 0) return {};
-  const lower = normalizeHost(host);
-  let wildcardMatch: DomainBrandingEntry | undefined;
-  for (const entry of entries) {
-    if (entry.host === lower) return entry;
-    if (entry.host.startsWith('*.')) {
-      const suffix = entry.host.slice(1); // ".example.com"
-      if (lower.endsWith(suffix) && lower.length > suffix.length) {
-        if (!wildcardMatch || entry.host.length > wildcardMatch.host.length) {
-          wildcardMatch = entry;
-        }
-      }
-    }
-  }
-  return wildcardMatch ?? {};
-}

lib/admin/migrate.ts

@@ -98,7 +98,7 @@ async function migrateAdminJson(): Promise<boolean> {
     lastLogin: data.lastLogin ?? null,
     passwordChangedAt: data.passwordChangedAt ?? now,
   };
-  const configData: AdminConfigData = { passwordHash: data.passwordHash, passwordHashFile: undefined };
+  const configData: AdminConfigData = { passwordHash: data.passwordHash };
 
   await ensureStateDir();
   const statePath = getStatePath('admin-state.json');

lib/admin/password.ts

@@ -9,7 +9,6 @@ import {
   assertWritable,
 } from './paths';
 import type { AdminConfigData, AdminStateData } from './types';
-import { readFileEnv } from '../read-file-env';
 
 const SCRYPT_KEYLEN = 64;
 const SCRYPT_COST = 16384; // 2^14
@@ -147,7 +146,7 @@ export async function initAdminPassword(): Promise<boolean> {
   }
 
   const hash = isHashed(envPassword) ? envPassword : await hashPassword(envPassword);
-  cachedConfig = { passwordHash: hash, passwordHashFile: undefined };
+  cachedConfig = { passwordHash: hash };
   cachedState = freshState();
   await writeConfigData(cachedConfig);
   await writeStateData(cachedState);
@@ -166,16 +165,7 @@ export async function initAdminPassword(): Promise<boolean> {
 export async function verifyAdminPassword(password: string): Promise<boolean> {
   if (!cachedConfig) cachedConfig = await readConfigData();
   if (!cachedConfig) return false;
-  if (cachedConfig.passwordHash) {
-    return verifyPassword(password, cachedConfig.passwordHash);
-  } else if (cachedConfig.passwordHashFile) {
-    let passwordHash = readFileEnv(cachedConfig.passwordHashFile);
-    if (passwordHash) {
-      return verifyPassword(password, passwordHash);
-    }
-  }
-  logger.error('The admin password hash could neither be retrieved from passwordHash nor from passwordHashFile in admin.json');
-  return false;
+  return verifyPassword(password, cachedConfig.passwordHash);
 }
 
 /**
@@ -186,7 +176,7 @@ export async function changeAdminPassword(currentPassword: string, newPassword:
   if (!valid) return false;
 
   const hash = await hashPassword(newPassword);
-  cachedConfig = { passwordHash: hash, passwordHashFile: undefined };
+  cachedConfig = { passwordHash: hash };
   await writeConfigData(cachedConfig);
 
   cachedState = {
@@ -215,7 +205,7 @@ export async function setInitialAdminPassword(
   const existing = await readConfigData();
   if (existing && !options.allowOverwrite) return false;
   const hash = await hashPassword(newPassword);
-  cachedConfig = { passwordHash: hash, passwordHashFile: undefined };
+  cachedConfig = { passwordHash: hash };
   cachedState = freshState();
   await writeConfigData(cachedConfig);
   await writeStateData(cachedState);

lib/admin/plugin-registry.ts

@@ -53,13 +53,6 @@ export interface ServerPlugin {
   forceEnabled?: boolean;
   configSchema?: Record<string, PluginConfigField>;
   settingsSchema?: Record<string, PluginSettingsField>;
-  /**
-   * Optional per-locale translation tables (locale -> key -> string) declared
-   * in the plugin manifest. Surfaced to the sandbox so plugin code can call
-   * `api.i18n.t(key)`; without it a plugin's strings stay in its hardcoded
-   * default language.
-   */
-  locales?: Record<string, Record<string, string>>;
   installedAt: string;
   updatedAt: string;
   /**

lib/admin/types.ts

@@ -6,8 +6,7 @@
  * is config; mutable timestamps live in AdminStateData.
  */
 export interface AdminConfigData {
-  passwordHash: string | undefined;
-  passwordHashFile: string | undefined;
+  passwordHash: string;
 }
 
 /**
@@ -107,10 +106,6 @@ export interface SettingsPolicy {
   approvedPlugins: string[];
   /** Theme IDs that are force-enabled (users cannot deactivate) */
   forceEnabledThemes: string[];
-  /** Web Push relay base URL shown to users. Empty means the built-in default. */
-  pushRelayUrl?: string;
-  /** When true, users cannot change pushRelayUrl in notification settings. */
-  pushRelayUrlLocked?: boolean;
 }
 
 export const DEFAULT_POLICY: SettingsPolicy = {
@@ -121,8 +116,6 @@ export const DEFAULT_POLICY: SettingsPolicy = {
   forceEnabledPlugins: [],
   approvedPlugins: [],
   forceEnabledThemes: [],
-  pushRelayUrl: '',
-  pushRelayUrlLocked: false,
 };
 
 export interface AuditEntry {
@@ -137,15 +130,12 @@ export const CONFIG_ENV_MAP: Record<string, { envVar: string; fileEnvVar?: strin
   appName: { envVar: 'APP_NAME', type: 'string', defaultValue: 'Webmail' },
   appShortName: { envVar: 'APP_SHORT_NAME', type: 'string', defaultValue: '' },
   appDescription: { envVar: 'APP_DESCRIPTION', type: 'string', defaultValue: '' },
-  searchEngineIndexing: { envVar: 'SEARCH_ENGINE_INDEXING', type: 'boolean', defaultValue: false },
   jmapServerUrl: { envVar: 'JMAP_SERVER_URL', type: 'url', defaultValue: '' },
   stalwartFeaturesEnabled: { envVar: 'STALWART_FEATURES', type: 'boolean', defaultValue: true },
   demoMode: { envVar: 'DEMO_MODE', type: 'boolean', defaultValue: false },
   devMode: { envVar: 'DEV_MOCK_JMAP', type: 'boolean', defaultValue: false },
   faviconUrl: { envVar: 'FAVICON_URL', type: 'url', defaultValue: '/branding/Bulwark_Favicon.svg' },
   pwaIconUrl: { envVar: 'PWA_ICON_URL', type: 'url', defaultValue: '' },
-  pwaScreenshotMobileUrl: { envVar: 'PWA_SCREENSHOT_MOBILE_URL', type: 'url', defaultValue: '' },
-  pwaScreenshotDesktopUrl: { envVar: 'PWA_SCREENSHOT_DESKTOP_URL', type: 'url', defaultValue: '' },
   pwaThemeColor: { envVar: 'PWA_THEME_COLOR', type: 'string', defaultValue: '#ffffff' },
   pwaBackgroundColor: { envVar: 'PWA_BACKGROUND_COLOR', type: 'string', defaultValue: '#ffffff' },
   appLogoLightUrl: { envVar: 'APP_LOGO_LIGHT_URL', type: 'url', defaultValue: '' },
@@ -167,7 +157,6 @@ export const CONFIG_ENV_MAP: Record<string, { envVar: string; fileEnvVar?: strin
   allowCustomJmapEndpoint: { envVar: 'ALLOW_CUSTOM_JMAP_ENDPOINT', type: 'boolean', defaultValue: false },
   jmapServers: { envVar: 'JMAP_SERVERS', type: 'json', defaultValue: [] },
   jmapServerAutoPickByDomain: { envVar: 'JMAP_SERVER_AUTO_PICK_BY_DOMAIN', type: 'boolean', defaultValue: false },
-  domainBranding: { envVar: 'DOMAIN_BRANDING', type: 'json', defaultValue: [] },
   autoSsoEnabled: { envVar: 'AUTO_SSO_ENABLED', type: 'boolean', defaultValue: false },
   cookieSameSite: { envVar: 'COOKIE_SAME_SITE', type: 'enum', defaultValue: 'lax', enumValues: ['lax', 'strict', 'none'] },
   allowedFrameAncestors: { envVar: 'ALLOWED_FRAME_ANCESTORS', type: 'string', defaultValue: '' },

lib/auth/session-secret.ts

@@ -23,12 +23,7 @@ export function getSessionSecret(): string {
   if (fromFile) return fromFile;
 
   const fromAdmin = configManager.get<string>('sessionSecret', '');
-  if (fromAdmin) return fromAdmin;
-
-  const fromAdminFile = readFileEnv(
-    configManager.get<string>('sessionSecretFile', ''),
-  );
-  return fromAdminFile || "";
+  return fromAdmin || '';
 }
 
 export function hasSessionSecret(): boolean {

lib/builtin-themes.ts

@@ -328,552 +328,6 @@ const solarizedCSS = `
   --color-chart-5: #6c71c4;
 }`;
 
-// Roundcube "Elastic" skin recreation.
-//
-// Colour tokens are lifted from skins/elastic/styles/colors.less (CC BY-SA):
-//   accent      #37beff   font        #27353a   border  #ddd
-//   error       #ff5552   success     #41b849   warning #ffd452
-//   task-menu    #2f3a3f (always dark, both modes)
-//   list-select  tint(#37beff, 90%) -> #ebf8ff
-// Dark mode mirrors @color-dark-* (background #21292c, font #c5d1d3, …).
-const elasticCSS = `
-:root {
-  --color-border: #dddddd;
-  --color-input: #ced4da;
-  --color-ring: #37beff;
-  --color-background: #ffffff;
-  --color-foreground: #27353a;
-  --color-primary: #37beff;
-  --color-primary-foreground: #ffffff;
-  --color-secondary: #f4f4f4;
-  --color-secondary-foreground: #27353a;
-  --color-muted: #f4f4f4;
-  --color-muted-foreground: #737677;
-  --color-accent: #e6f6ff;
-  --color-accent-foreground: #0070a8;
-  --color-destructive: #ff5552;
-  --color-destructive-foreground: #ffffff;
-  --color-popover: #ffffff;
-  --color-popover-foreground: #27353a;
-  --color-sidebar: #ffffff;
-  --color-sidebar-foreground: #27353a;
-  --color-sidebar-border: #dddddd;
-  --color-sidebar-accent: #ebf8ff;
-  --color-sidebar-accent-foreground: #27353a;
-  --color-card: #ffffff;
-  --color-card-foreground: #27353a;
-  --color-success: #41b849;
-  --color-success-foreground: #ffffff;
-  --color-warning: #ffd452;
-  --color-warning-foreground: #27353a;
-  --color-info: #37beff;
-  --color-info-foreground: #ffffff;
-  --color-selection: #ebf8ff;
-  --color-selection-foreground: #27353a;
-  --color-unread: #ffd452;
-  --color-chart-1: #37beff;
-  --color-chart-2: #41b849;
-  --color-chart-3: #ffd452;
-  --color-chart-4: #ff5552;
-  --color-chart-5: #9b59b6;
-  /* Elastic is a 14px Roboto skin with tighter list rows than Bulwark's default */
-  --font-size-base: 14px;
-  --list-item-height: 40px;
-}
-.dark {
-  --color-border: #4d6066;
-  --color-input: #4d6066;
-  --color-ring: #37beff;
-  --color-background: #21292c;
-  --color-foreground: #ffffff;
-  --color-primary: #37beff;
-  --color-primary-foreground: #ffffff;
-  --color-secondary: #2c373a;
-  --color-secondary-foreground: #ffffff;
-  --color-muted: #2c373a;
-  /* Roundcube keeps most text near the bright font colour, only true hints
-     dim out. Bulwark applies muted-foreground far more widely, so brighten it
-     toward @color-dark-font (#c5d1d3) to match Elastic's overall brightness. */
-  --color-muted-foreground: #b3bec1;
-  --color-accent: #374549;
-  --color-accent-foreground: #37beff;
-  --color-destructive: #ff5552;
-  --color-destructive-foreground: #ffffff;
-  --color-popover: #161b1d;
-  --color-popover-foreground: #ffffff;
-  --color-sidebar: #21292c;
-  --color-sidebar-foreground: #ffffff;
-  --color-sidebar-border: #4d6066;
-  --color-sidebar-accent: #374549;
-  --color-sidebar-accent-foreground: #c5d1d3;
-  --color-card: #1a2225;
-  --color-card-foreground: #ffffff;
-  --color-success: #41b849;
-  --color-success-foreground: #ffffff;
-  --color-warning: #ffd452;
-  --color-warning-foreground: #21292c;
-  --color-info: #37beff;
-  --color-info-foreground: #ffffff;
-  --color-selection: #374549;
-  --color-selection-foreground: #37beff;
-  --color-unread: #b88a00;
-  --color-chart-1: #37beff;
-  --color-chart-2: #41b849;
-  --color-chart-3: #ffd452;
-  --color-chart-4: #ff5552;
-  --color-chart-5: #b48ead;
-}`;
-
-// Component-level overrides that the colour tokens alone can't express:
-// Roboto typography and Elastic's signature dark "task menu" rail (which is
-// dark in both light and dark mode). Scoped under the skin body attribute so
-// it cleanly detaches when the theme is switched off.
-const elasticSkin = `
-body[data-theme-skin="builtin-roundcube-elastic"] {
-  font-family: Roboto, "Helvetica Neue", "Segoe UI", Arial, "Noto Sans", sans-serif;
-}
-
-/* ── Task menu (left navigation rail) ─────────────────────────── */
-body[data-theme-skin="builtin-roundcube-elastic"] .w-14.bg-secondary {
-  background-color: #2f3a3f !important;
-  border-right: 1px solid rgba(0, 0, 0, 0.25) !important;
-}
-/* In dark mode the black hairline vanishes against the dark canvas - use a
-   light one so the rail still reads as a distinct column. (.dark lives on
-   <html>, so it must be an ancestor of the skinned <body>.) */
-.dark body[data-theme-skin="builtin-roundcube-elastic"] .w-14.bg-secondary {
-  border-right-color: rgba(255, 255, 255, 0.1) !important;
-}
-/* Light icons + labels on the dark rail */
-body[data-theme-skin="builtin-roundcube-elastic"] .w-14.bg-secondary a,
-body[data-theme-skin="builtin-roundcube-elastic"] .w-14.bg-secondary button,
-body[data-theme-skin="builtin-roundcube-elastic"] .w-14.bg-secondary .text-muted-foreground {
-  color: #e7edee !important;
-}
-/* Hover slab */
-body[data-theme-skin="builtin-roundcube-elastic"] .w-14.bg-secondary a:hover,
-body[data-theme-skin="builtin-roundcube-elastic"] .w-14.bg-secondary button:hover {
-  background-color: #41525a !important;
-  color: #ffffff !important;
-}
-/* Selected task: brighter slab, accent-blue glyph (matches Elastic) */
-body[data-theme-skin="builtin-roundcube-elastic"] .w-14.bg-secondary .bg-primary\\/10 {
-  background-color: #41525a !important;
-}
-body[data-theme-skin="builtin-roundcube-elastic"] .w-14.bg-secondary .text-primary {
-  color: #37beff !important;
-}
-
-/* ── Flatten Bulwark's soft radii to Elastic's Bootstrap-flat look ── */
-/* Elastic uses ~4px corners on buttons/inputs/cards; rounded-full (pills,
-   avatars, toggles) is intentionally left alone. */
-body[data-theme-skin="builtin-roundcube-elastic"] .rounded-md,
-body[data-theme-skin="builtin-roundcube-elastic"] .rounded-lg,
-body[data-theme-skin="builtin-roundcube-elastic"] .rounded-xl,
-body[data-theme-skin="builtin-roundcube-elastic"] .rounded-2xl,
-body[data-theme-skin="builtin-roundcube-elastic"] .rounded-3xl,
-body[data-theme-skin="builtin-roundcube-elastic"] input,
-body[data-theme-skin="builtin-roundcube-elastic"] textarea,
-body[data-theme-skin="builtin-roundcube-elastic"] button:not(.rounded-full) {
-  border-radius: 4px !important;
-}
-
-/* ── Unify panel backgrounds like Roundcube ───────────────────── */
-/* In Elastic the folder list, message list and content pane all share one
-   canvas (white / dark); only the narrow task rail is dark. Bulwark's folder
-   sidebar uses \`bg-secondary\` (a grey panel), so repaint it with the main
-   background. The folder sidebar carries the \`border-r\` class; the dark task
-   rail uses \`bg-secondary\` WITHOUT it (inline-styled border), so this
-   qualifier leaves the rail dark. */
-body[data-theme-skin="builtin-roundcube-elastic"] .bg-secondary.border-r {
-  background-color: var(--color-background) !important;
-}
-/* The empty "No conversation selected" pane uses a muted diagonal gradient;
-   flatten it to the plain canvas so the content area is one solid colour. */
-body[data-theme-skin="builtin-roundcube-elastic"] .bg-gradient-to-br.from-muted\\/30.to-muted\\/50 {
-  background: var(--color-background) !important;
-}
-
-/* The message-viewer body sits on a faint muted backing (bg-muted/30); flatten
-   it to the plain canvas so the whole content pane - search bar, action
-   toolbar, mail header and body - is one uniform background colour. The
-   search/toolbar/header are bordered \`bg-background\` strips, so they already
-   match once we leave them untinted. */
-body[data-theme-skin="builtin-roundcube-elastic"] .bg-muted\\/30 {
-  background-color: var(--color-background) !important;
-}
-
-/* ── Elastic primary buttons (.btn-primary) ──────────────────── */
-/* Solid accent fill, white label + icon, hairline border, focus halo. Light
-   = @color-main (#37beff); dark = @color-dark-main (darken 30% -> #006a9d)
-   with the bright #37beff outline, exactly like the on-switch. */
-body[data-theme-skin="builtin-roundcube-elastic"] .bg-primary.text-primary-foreground {
-  background-color: #37beff !important;
-  border: 1px solid #37beff !important;
-  color: #ffffff !important;
-}
-body[data-theme-skin="builtin-roundcube-elastic"] .bg-primary.text-primary-foreground:hover {
-  background-color: #19b6fe !important;
-  border-color: #0bb0ff !important;
-}
-body[data-theme-skin="builtin-roundcube-elastic"] .bg-primary.text-primary-foreground:focus-visible {
-  box-shadow: 0 0 0 0.2rem rgba(55, 190, 255, 0.3) !important;
-}
-.dark body[data-theme-skin="builtin-roundcube-elastic"] .bg-primary.text-primary-foreground {
-  background-color: #006a9d !important;
-  border-color: #37beff !important;
-  color: #ffffff !important;
-}
-.dark body[data-theme-skin="builtin-roundcube-elastic"] .bg-primary.text-primary-foreground:hover {
-  background-color: #0079b3 !important;
-}
-
-/* ── Elastic on/off switch (.custom-switch) ──────────────────── */
-/* Track + knob restyled to the Bootstrap-derived Elastic switch. The toggle
-   is a [role="switch"] button with a single inner <span> knob. */
-body[data-theme-skin="builtin-roundcube-elastic"] [role="switch"] {
-  background-color: #ced4da !important;
-  border: 1px solid #b8c0c8 !important;
-}
-body[data-theme-skin="builtin-roundcube-elastic"] [role="switch"] > span {
-  background-color: #ffffff !important;
-}
-body[data-theme-skin="builtin-roundcube-elastic"] [role="switch"][aria-checked="true"] {
-  background-color: #37beff !important;
-  border-color: #37beff !important;
-}
-.dark body[data-theme-skin="builtin-roundcube-elastic"] [role="switch"] {
-  background-color: #4d6066 !important;
-  border-color: #5d7077 !important;
-}
-.dark body[data-theme-skin="builtin-roundcube-elastic"] [role="switch"] > span {
-  background-color: #c5d1d3 !important;
-}
-.dark body[data-theme-skin="builtin-roundcube-elastic"] [role="switch"][aria-checked="true"] {
-  background-color: #006a9d !important;
-  border-color: #37beff !important;
-}
-
-/* ── Recipient name/email rendered as links (like Roundcube) ──── */
-/* Sender + recipient triggers (RecipientPopover) sit at \`text-foreground\`
-   and only turn blue on hover; Elastic shows them link-blue at rest
-   (@color-link #00acff, brighter in dark). The three-class combo is unique
-   to these recipient buttons. */
-body[data-theme-skin="builtin-roundcube-elastic"] button.hover\\:text-primary.hover\\:underline.cursor-pointer {
-  color: #00acff !important;
-}
-.dark body[data-theme-skin="builtin-roundcube-elastic"] button.hover\\:text-primary.hover\\:underline.cursor-pointer {
-  color: #37beff !important;
-}
-/* The sender's email address printed under the name is muted grey; Roundcube
-   shows it link-blue too. It's the div immediately after the name row
-   (.flex.items-center.flex-wrap), which the contact-card org line is not, so
-   this sibling selector scopes it to the sender email only. */
-body[data-theme-skin="builtin-roundcube-elastic"] .flex.items-center.flex-wrap + div.text-muted-foreground.truncate {
-  color: #00acff !important;
-}
-.dark body[data-theme-skin="builtin-roundcube-elastic"] .flex.items-center.flex-wrap + div.text-muted-foreground.truncate {
-  color: #37beff !important;
-}
-
-/* ── Elastic context / popup menus ───────────────────────────── */
-/* Roundcube highlights the hovered menu entry with a solid accent fill and
-   white text (@color-menu-hover-background: @color-main, @color-menu-hover:
-   #fff) - the same in light and dark. */
-body[data-theme-skin="builtin-roundcube-elastic"] [role="menu"] [role="menuitem"]:hover,
-body[data-theme-skin="builtin-roundcube-elastic"] [role="menu"] [role="menuitem"]:focus,
-body[data-theme-skin="builtin-roundcube-elastic"] [role="menu"] [role="menuitem"]:focus-visible {
-  background-color: #37beff !important;
-  color: #ffffff !important;
-}
-/* Icons (currentColor) and muted accessories (shortcuts, submenu chevron)
-   follow the white text on hover. */
-body[data-theme-skin="builtin-roundcube-elastic"] [role="menu"] [role="menuitem"]:hover svg,
-body[data-theme-skin="builtin-roundcube-elastic"] [role="menu"] [role="menuitem"]:focus svg,
-body[data-theme-skin="builtin-roundcube-elastic"] [role="menu"] [role="menuitem"]:hover .text-muted-foreground {
-  color: #ffffff !important;
-}
-
-/* ── Elastic folder list: unread count as a rounded pill ─────── */
-/* Roundcube shows the unread count in a small grey pill on the right, and no
-   badge at all when a folder has nothing unread. Bulwark renders plain
-   "unread / total" text; the counts container is
-   span.ml-2.flex-shrink-0.gap-1.items-baseline holding an unread span
-   (.font-semibold), an optional "/" (.text-muted-foreground/60) and the total
-   (.text-muted-foreground). Reshape it into a pill, drop the total + slash,
-   and hide the whole badge when there's no unread span. */
-body[data-theme-skin="builtin-roundcube-elastic"] .bg-secondary.border-r span.ml-2.flex-shrink-0.gap-1.items-baseline {
-  align-items: center !important;
-  justify-content: center;
-  min-width: 1.6rem;
-  height: 1.2rem;
-  padding: 0 0.45rem;
-  border-radius: 0.75rem;
-  background-color: #e4e8ea;
-}
-body[data-theme-skin="builtin-roundcube-elastic"] .bg-secondary.border-r span.ml-2.flex-shrink-0.gap-1.items-baseline > span.text-muted-foreground,
-body[data-theme-skin="builtin-roundcube-elastic"] .bg-secondary.border-r span.ml-2.flex-shrink-0.gap-1.items-baseline > span.text-muted-foreground\\/60 {
-  display: none !important;
-}
-body[data-theme-skin="builtin-roundcube-elastic"] .bg-secondary.border-r span.ml-2.flex-shrink-0.gap-1.items-baseline > span {
-  color: #5e6b70 !important;
-  font-weight: 600 !important;
-}
-/* No unread span -> no badge (matches Sent/Drafts in Roundcube). */
-body[data-theme-skin="builtin-roundcube-elastic"] .bg-secondary.border-r span.ml-2.flex-shrink-0.gap-1.items-baseline:not(:has(span.font-semibold)) {
-  display: none !important;
-}
-.dark body[data-theme-skin="builtin-roundcube-elastic"] .bg-secondary.border-r span.ml-2.flex-shrink-0.gap-1.items-baseline {
-  background-color: #3f4e55;
-}
-.dark body[data-theme-skin="builtin-roundcube-elastic"] .bg-secondary.border-r span.ml-2.flex-shrink-0.gap-1.items-baseline > span {
-  color: #c9d3d5 !important;
-}
-
-/* A slightly bolder accent bar on the selected folder, like Elastic. */
-body[data-theme-skin="builtin-roundcube-elastic"] .bg-secondary.border-r .border-l-2.border-primary {
-  border-left-width: 3px !important;
-}`;
-
-// "Aurora Glass" - an ultra-modern glassmorphism skin. Vibrant indigo→cyan
-// accents float over a fixed gradient-mesh canvas; every structural surface
-// (nav rail, folder sidebar, cards, popovers, menus, dialogs, toolbars) is a
-// translucent frosted pane with heavy backdrop-blur + saturation, hairline
-// luminous borders and soft glow on the primary action.
-//
-// The colour tokens stay near-solid for legible text contrast; the frosted
-// translucency + blur all live in the skin, where a single selector can pair
-// an rgba background with the matching backdrop-filter.
-const auroraCSS = `
-:root {
-  --color-border: rgba(13, 18, 45, 0.10);
-  --color-input: rgba(13, 18, 45, 0.12);
-  --color-ring: #6d5cff;
-  --color-background: #eef1fb;
-  --color-foreground: #14162e;
-  --color-primary: #6d5cff;
-  --color-primary-foreground: #ffffff;
-  --color-secondary: #e3e7f7;
-  --color-secondary-foreground: #14162e;
-  --color-muted: #e7eaf6;
-  --color-muted-foreground: #5b6080;
-  --color-accent: #e0e7ff;
-  --color-accent-foreground: #4338ca;
-  --color-destructive: #f43f5e;
-  --color-destructive-foreground: #ffffff;
-  --color-popover: #ffffff;
-  --color-popover-foreground: #14162e;
-  --color-sidebar: #eef1fb;
-  --color-sidebar-foreground: #14162e;
-  --color-sidebar-border: rgba(13, 18, 45, 0.08);
-  --color-sidebar-accent: rgba(109, 92, 255, 0.10);
-  --color-sidebar-accent-foreground: #4338ca;
-  --color-card: #ffffff;
-  --color-card-foreground: #14162e;
-  --color-success: #10b981;
-  --color-success-foreground: #ffffff;
-  --color-warning: #f59e0b;
-  --color-warning-foreground: #14162e;
-  --color-info: #06b6d4;
-  --color-info-foreground: #ffffff;
-  --color-selection: rgba(109, 92, 255, 0.14);
-  --color-selection-foreground: #4338ca;
-  --color-unread: #6d5cff;
-  --color-chart-1: #6d5cff;
-  --color-chart-2: #06b6d4;
-  --color-chart-3: #ec4899;
-  --color-chart-4: #f59e0b;
-  --color-chart-5: #10b981;
-}
-.dark {
-  --color-border: rgba(255, 255, 255, 0.08);
-  --color-input: rgba(255, 255, 255, 0.10);
-  --color-ring: #8b7bff;
-  --color-background: #06070f;
-  --color-foreground: #eef0ff;
-  --color-primary: #8b7bff;
-  --color-primary-foreground: #ffffff;
-  --color-secondary: rgba(255, 255, 255, 0.06);
-  --color-secondary-foreground: #eef0ff;
-  --color-muted: rgba(255, 255, 255, 0.05);
-  --color-muted-foreground: #9aa0c4;
-  --color-accent: rgba(139, 123, 255, 0.16);
-  --color-accent-foreground: #c4bbff;
-  --color-destructive: #fb7185;
-  --color-destructive-foreground: #1a0b10;
-  --color-popover: #12132a;
-  --color-popover-foreground: #eef0ff;
-  --color-sidebar: #08091a;
-  --color-sidebar-foreground: #eef0ff;
-  --color-sidebar-border: rgba(255, 255, 255, 0.07);
-  --color-sidebar-accent: rgba(139, 123, 255, 0.18);
-  --color-sidebar-accent-foreground: #c4bbff;
-  --color-card: rgba(255, 255, 255, 0.04);
-  --color-card-foreground: #eef0ff;
-  --color-success: #34d399;
-  --color-success-foreground: #052e1f;
-  --color-warning: #fbbf24;
-  --color-warning-foreground: #1a1405;
-  --color-info: #22d3ee;
-  --color-info-foreground: #04222a;
-  --color-selection: rgba(139, 123, 255, 0.22);
-  --color-selection-foreground: #c4bbff;
-  --color-unread: #8b7bff;
-  --color-chart-1: #8b7bff;
-  --color-chart-2: #22d3ee;
-  --color-chart-3: #f472b6;
-  --color-chart-4: #fbbf24;
-  --color-chart-5: #34d399;
-}`;
-
-// Glassmorphism skin: the frosted translucency, backdrop-blur, gradient-mesh
-// canvas, luminous borders and glow that the colour tokens alone can't carry.
-// Scoped under the skin body attribute so it detaches cleanly on switch-off.
-const auroraSkin = `
-body[data-theme-skin="builtin-aurora-glass"] {
-  font-family: "Inter", "SF Pro Display", "Segoe UI", system-ui, -apple-system, sans-serif;
-  letter-spacing: -0.01em;
-}
-
-/* ── Gradient-mesh canvas ──────────────────────────────────────── */
-/* A multi-stop radial mesh painted onto the app-shell root (the unique
-   .bg-background.overflow-hidden container) so the frosted panes have
-   something luminous to blur. Painting it directly on the shell - rather than
-   a fixed body::before with z-indexed children - avoids creating stacking
-   contexts on portaled popups/dialogs (Radix portals render as direct <body>
-   children), which would otherwise break their layering. */
-body[data-theme-skin="builtin-aurora-glass"] .bg-background.overflow-hidden {
-  background-color: var(--color-background);
-  background-image:
-    radial-gradient(60rem 60rem at 12% -10%, rgba(109, 92, 255, 0.22), transparent 60%),
-    radial-gradient(50rem 50rem at 105% 5%, rgba(6, 182, 212, 0.18), transparent 55%),
-    radial-gradient(55rem 55rem at 80% 110%, rgba(236, 72, 153, 0.16), transparent 60%),
-    radial-gradient(45rem 45rem at -5% 95%, rgba(16, 185, 129, 0.12), transparent 55%);
-}
-.dark body[data-theme-skin="builtin-aurora-glass"] .bg-background.overflow-hidden {
-  background-image:
-    radial-gradient(60rem 60rem at 12% -10%, rgba(109, 92, 255, 0.16), transparent 58%),
-    radial-gradient(50rem 50rem at 105% 5%, rgba(6, 182, 212, 0.11), transparent 52%),
-    radial-gradient(55rem 55rem at 80% 110%, rgba(236, 72, 153, 0.10), transparent 58%),
-    radial-gradient(45rem 45rem at -5% 95%, rgba(16, 185, 129, 0.07), transparent 52%);
-}
-
-/* ── Pill-soft radii everywhere ───────────────────────────────── */
-body[data-theme-skin="builtin-aurora-glass"] .rounded-md,
-body[data-theme-skin="builtin-aurora-glass"] .rounded-lg {
-  border-radius: 0.85rem !important;
-}
-body[data-theme-skin="builtin-aurora-glass"] .rounded-xl,
-body[data-theme-skin="builtin-aurora-glass"] .rounded-2xl {
-  border-radius: 1.25rem !important;
-}
-
-/* ── Frosted panes: the shared glass recipe ───────────────────── */
-/* Nav rail, folder sidebar, content backing, cards, popovers, dialogs and
-   menus all share one frosted treatment - translucent fill + heavy backdrop
-   blur + saturation so the mesh and neighbours bleed through softly. */
-body[data-theme-skin="builtin-aurora-glass"] .w-14.bg-secondary,
-body[data-theme-skin="builtin-aurora-glass"] .bg-secondary.border-r {
-  background-color: rgba(255, 255, 255, 0.55) !important;
-  backdrop-filter: blur(26px) saturate(180%);
-  -webkit-backdrop-filter: blur(26px) saturate(180%);
-  border-color: rgba(13, 18, 45, 0.08) !important;
-}
-.dark body[data-theme-skin="builtin-aurora-glass"] .w-14.bg-secondary,
-.dark body[data-theme-skin="builtin-aurora-glass"] .bg-secondary.border-r {
-  background-color: rgba(8, 9, 22, 0.82) !important;
-  border-color: rgba(255, 255, 255, 0.07) !important;
-}
-
-/* The "no conversation selected" empty pane sits inside an opaque
-   bg-background column, so it can't inherit the shell mesh - paint the same
-   gradient mesh directly onto it so the placeholder reads as glass too. */
-body[data-theme-skin="builtin-aurora-glass"] .bg-gradient-to-br.from-muted\\/30.to-muted\\/50 {
-  background-color: var(--color-background) !important;
-  background-image:
-    radial-gradient(50rem 50rem at 15% 0%, rgba(109, 92, 255, 0.22), transparent 60%),
-    radial-gradient(45rem 45rem at 100% 10%, rgba(6, 182, 212, 0.18), transparent 55%),
-    radial-gradient(50rem 50rem at 85% 105%, rgba(236, 72, 153, 0.16), transparent 60%) !important;
-}
-.dark body[data-theme-skin="builtin-aurora-glass"] .bg-gradient-to-br.from-muted\\/30.to-muted\\/50 {
-  background-image:
-    radial-gradient(50rem 50rem at 15% 0%, rgba(109, 92, 255, 0.18), transparent 58%),
-    radial-gradient(45rem 45rem at 100% 10%, rgba(6, 182, 212, 0.12), transparent 52%),
-    radial-gradient(50rem 50rem at 85% 105%, rgba(236, 72, 153, 0.11), transparent 58%) !important;
-}
-/* The reading-pane message backing goes clear glass so the frosted panes and
-   gradient bleed through softly. */
-body[data-theme-skin="builtin-aurora-glass"] .bg-muted\\/30 {
-  background: transparent !important;
-}
-
-/* Cards, popovers and dialogs: brighter frosted glass with a luminous edge. */
-body[data-theme-skin="builtin-aurora-glass"] .bg-card,
-body[data-theme-skin="builtin-aurora-glass"] .bg-popover,
-body[data-theme-skin="builtin-aurora-glass"] [role="menu"],
-body[data-theme-skin="builtin-aurora-glass"] [role="dialog"],
-body[data-theme-skin="builtin-aurora-glass"] [role="listbox"] {
-  background-color: rgba(255, 255, 255, 0.72) !important;
-  backdrop-filter: blur(28px) saturate(190%);
-  -webkit-backdrop-filter: blur(28px) saturate(190%);
-  border: 1px solid rgba(255, 255, 255, 0.6) !important;
-  box-shadow: 0 12px 40px -12px rgba(20, 22, 46, 0.28), inset 0 1px 0 rgba(255, 255, 255, 0.7) !important;
-}
-.dark body[data-theme-skin="builtin-aurora-glass"] .bg-card,
-.dark body[data-theme-skin="builtin-aurora-glass"] .bg-popover,
-.dark body[data-theme-skin="builtin-aurora-glass"] [role="menu"],
-.dark body[data-theme-skin="builtin-aurora-glass"] [role="dialog"],
-.dark body[data-theme-skin="builtin-aurora-glass"] [role="listbox"] {
-  background-color: rgba(16, 17, 38, 0.86) !important;
-  border: 1px solid rgba(255, 255, 255, 0.10) !important;
-  box-shadow: 0 16px 48px -12px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.08) !important;
-}
-
-/* ── Primary action: gradient fill + glow ─────────────────────── */
-body[data-theme-skin="builtin-aurora-glass"] .bg-primary.text-primary-foreground {
-  background-image: linear-gradient(135deg, #7c5cff 0%, #6d5cff 45%, #4f9bff 100%) !important;
-  border: none !important;
-  color: #ffffff !important;
-  box-shadow: 0 6px 20px -4px rgba(109, 92, 255, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.35) !important;
-  transition: box-shadow 160ms ease, filter 160ms ease;
-}
-body[data-theme-skin="builtin-aurora-glass"] .bg-primary.text-primary-foreground:hover {
-  filter: brightness(1.08);
-  box-shadow: 0 10px 30px -4px rgba(109, 92, 255, 0.7), inset 0 1px 0 rgba(255, 255, 255, 0.4) !important;
-}
-.dark body[data-theme-skin="builtin-aurora-glass"] .bg-primary.text-primary-foreground {
-  background-image: linear-gradient(135deg, #8b7bff 0%, #6d5cff 50%, #22d3ee 130%) !important;
-  box-shadow: 0 6px 24px -4px rgba(139, 123, 255, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.2) !important;
-}
-
-/* ── Selected folder / row: soft tinted glass + accent bar ────── */
-body[data-theme-skin="builtin-aurora-glass"] .bg-secondary.border-r .border-l-2.border-primary {
-  border-left-width: 3px !important;
-}
-
-/* ── On/off switch: gradient when active ──────────────────────── */
-body[data-theme-skin="builtin-aurora-glass"] [role="switch"][aria-checked="true"] {
-  background-image: linear-gradient(135deg, #7c5cff, #4f9bff) !important;
-  border-color: transparent !important;
-  box-shadow: 0 2px 10px -1px rgba(109, 92, 255, 0.6) !important;
-}
-.dark body[data-theme-skin="builtin-aurora-glass"] [role="switch"][aria-checked="true"] {
-  background-image: linear-gradient(135deg, #8b7bff, #22d3ee) !important;
-}
-
-/* ── Menu hover: tinted accent slab (keeps glass legible) ─────── */
-body[data-theme-skin="builtin-aurora-glass"] [role="menu"] [role="menuitem"]:hover,
-body[data-theme-skin="builtin-aurora-glass"] [role="menu"] [role="menuitem"]:focus,
-body[data-theme-skin="builtin-aurora-glass"] [role="menu"] [role="menuitem"]:focus-visible {
-  background-color: rgba(109, 92, 255, 0.14) !important;
-  color: var(--color-foreground) !important;
-}
-.dark body[data-theme-skin="builtin-aurora-glass"] [role="menu"] [role="menuitem"]:hover,
-.dark body[data-theme-skin="builtin-aurora-glass"] [role="menu"] [role="menuitem"]:focus,
-.dark body[data-theme-skin="builtin-aurora-glass"] [role="menu"] [role="menuitem"]:focus-visible {
-  background-color: rgba(139, 123, 255, 0.22) !important;
-}`;
-
 export const BUILTIN_THEMES: InstalledTheme[] = [
   {
     id: 'builtin-qui',
@@ -919,30 +373,4 @@ export const BUILTIN_THEMES: InstalledTheme[] = [
     enabled: true,
     builtIn: true,
   },
-  {
-    id: 'builtin-roundcube-elastic',
-    name: 'Roundcube Elastic',
-    version: '1.0.0',
-    author: 'Built-in',
-    description: 'Faithful recreation of Roundcube\'s Elastic skin - Roboto, the #37beff blue, and the dark task-menu rail',
-    css: elasticCSS,
-    skin: elasticSkin,
-    variants: ['light', 'dark'],
-    typography: { fontSans: 'Roboto, "Helvetica Neue", Arial, sans-serif', baseFontSize: '14px' },
-    enabled: true,
-    builtIn: true,
-  },
-  {
-    id: 'builtin-aurora-glass',
-    name: 'Aurora Glass',
-    version: '1.0.0',
-    author: 'Built-in',
-    description: 'Ultra-modern glassmorphism - frosted blurred panes floating over a vibrant indigo→cyan gradient mesh, with glowing gradient actions',
-    css: auroraCSS,
-    skin: auroraSkin,
-    variants: ['light', 'dark'],
-    typography: { fontSans: '"Inter", "SF Pro Display", "Segoe UI", system-ui, sans-serif' },
-    enabled: true,
-    builtIn: true,
-  },
 ];

lib/demo/demo-client.ts

@@ -329,7 +329,7 @@ export class DemoJMAPClient implements IJMAPClient {
     this.recalcMailboxCounts();
   }
 
-  async emptyMailbox(mailboxId: string, _accountId?: string): Promise<number> {
+  async emptyMailbox(mailboxId: string): Promise<number> {
     const before = this.data.emails.length;
     this.data.emails = this.data.emails.filter(e => !e.mailboxIds[mailboxId]);
     const removed = before - this.data.emails.length;
@@ -530,14 +530,6 @@ export class DemoJMAPClient implements IJMAPClient {
     return { blobId, size: file.size, type: file.type };
   }
 
-  async importEmail(): Promise<string | null> {
-    return generateDemoId('email');
-  }
-
-  async sendReadReceipt(): Promise<void> {
-    // Demo mode: no real network send.
-  }
-
   getBlobDownloadUrl(blobId: string): string {
     return `data:application/octet-stream;demo-blob=${blobId}`;
   }
@@ -902,10 +894,6 @@ export class DemoJMAPClient implements IJMAPClient {
     return this.data.fileNodes.filter(n => n.parentId === parentId);
   }
 
-  async listAllFileNodes(): Promise<FileNode[]> {
-    return [...this.data.fileNodes];
-  }
-
   async getFileNodes(ids: string[] | null): Promise<FileNode[]> {
     if (ids === null) return [...this.data.fileNodes];
     return this.data.fileNodes.filter(n => ids.includes(n.id));
@@ -936,18 +924,6 @@ export class DemoJMAPClient implements IJMAPClient {
     if (node) Object.assign(node, updates, { updated: new Date().toISOString() });
   }
 
-  async updateFileNodes(updates: Record<string, Partial<Pick<FileNode, 'name' | 'parentId'>>>): Promise<{ updated: string[]; notUpdated: Record<string, string> }> {
-    const updated: string[] = [];
-    for (const [id, patch] of Object.entries(updates)) {
-      const node = this.data.fileNodes.find(n => n.id === id);
-      if (node) {
-        Object.assign(node, patch, { updated: new Date().toISOString() });
-        updated.push(id);
-      }
-    }
-    return { updated, notUpdated: {} };
-  }
-
   async destroyFileNodes(ids: string[]): Promise<{ destroyed: string[]; notDestroyed: string[] }> {
     const idSet = new Set(ids);
     this.data.fileNodes = this.data.fileNodes.filter(n => !idSet.has(n.id));

lib/email-headers.ts

@@ -1,83 +1,23 @@
 import { AuthenticationResults } from './jmap/types';
 import { parseUnsubscribeUrls } from './validation';
 
-type SpfResult = 'pass' | 'fail' | 'softfail' | 'neutral' | 'none' | 'temperror' | 'permerror';
-type SpfEntry = NonNullable<NonNullable<AuthenticationResults['spf']>['all']>[number];
-
-/**
- * Severity ranking for SPF results. Higher = more severe / more actionable.
- * A hard `fail` is a definitive policy violation and must outrank ambiguous
- * states like `temperror`, so a spoofed message isn't softened to a
- * "temporary failure" headline when one identity hard-fails.
- */
-const SPF_SEVERITY: Record<SpfResult, number> = {
-  fail: 6,
-  softfail: 5,
-  permerror: 4,
-  temperror: 3,
-  neutral: 2,
-  none: 1,
-  pass: 0,
-};
-
-/**
- * Whether the authentication results indicate the visible From identity can't
- * be trusted (i.e. the message is likely spoofed). Used to suppress UI that
- * would otherwise imply the message legitimately came from one of the user's
- * own identities (e.g. the "via <identity>" badge).
- */
-export function isAuthenticationSpoofed(auth?: AuthenticationResults): boolean {
-  if (!auth) return false;
-  // DMARC aligns the visible From with SPF/DKIM, so a DMARC fail is the
-  // strongest single spoofing signal.
-  if (auth.dmarc?.result === 'fail') return true;
-  // Otherwise a hard SPF fail with no valid DKIM signature means the sender
-  // isn't authorized for the envelope domain.
-  if (auth.spf?.result === 'fail' && auth.dkim?.result !== 'pass') return true;
-  return false;
-}
-
 /**
  * Parse Authentication-Results header to extract SPF, DKIM, DMARC results
  */
 export function parseAuthenticationResults(header: string): AuthenticationResults {
   const results: AuthenticationResults = {};
 
+  type SpfResult = 'pass' | 'fail' | 'softfail' | 'neutral' | 'none' | 'temperror' | 'permerror';
   type DkimResult = 'pass' | 'fail' | 'policy' | 'neutral' | 'temperror' | 'permerror';
   type DmarcResult = 'pass' | 'fail' | 'none';
   type DmarcPolicy = 'reject' | 'quarantine' | 'none';
 
-  // Parse SPF. A single Authentication-Results header can carry more than one
-  // SPF result when the server evaluates multiple identities (HELO and MAIL
-  // FROM). Collect them all and surface the most severe as the headline so a
-  // hard MAIL FROM `fail` isn't softened to a HELO `temperror`.
-  const spfRegex = /spf=(\w+)(?:\s+\([^)]*\))?(?:\s+smtp\.(mailfrom|helo)=([^\s;]+))?/g;
-  const spfResults: SpfEntry[] = [];
-  let spfM: RegExpExecArray | null;
-  while ((spfM = spfRegex.exec(header)) !== null) {
-    spfResults.push({
-      result: spfM[1] as SpfResult,
-      identity: spfM[2] as SpfEntry['identity'],
-      domain: spfM[3],
-    });
-  }
-  if (spfResults.length > 0) {
-    const severity = (r: string) => SPF_SEVERITY[r as SpfResult] ?? -1;
-    // Most severe wins; on a tie prefer the MAIL FROM identity (more meaningful
-    // than HELO) and otherwise keep the first occurrence.
-    const primary = spfResults.reduce((best, cur) => {
-      if (severity(cur.result) > severity(best.result)) return cur;
-      if (
-        severity(cur.result) === severity(best.result) &&
-        best.identity !== 'mailfrom' &&
-        cur.identity === 'mailfrom'
-      ) return cur;
-      return best;
-    });
+  // Parse SPF
+  const spfMatch = header.match(/spf=(\w+)(?:\s+\([^)]*\))?\s+(?:smtp\.(?:mailfrom|helo)=([^\s;]+))?/);
+  if (spfMatch) {
     results.spf = {
-      result: primary.result,
-      domain: primary.domain,
-      ...(spfResults.length > 1 ? { all: spfResults } : {}),
+      result: spfMatch[1] as SpfResult,
+      domain: spfMatch[2]
     };
   }
 

lib/file-preview.ts

@@ -1,4 +1,4 @@
-export type FilePreviewKind = 'image' | 'html' | 'eml' | 'text' | 'markdown' | 'pdf' | 'audio' | 'video' | 'unsupported';
+export type FilePreviewKind = 'image' | 'html' | 'text' | 'markdown' | 'pdf' | 'audio' | 'video' | 'unsupported';
 
 const IMAGE_EXTENSIONS = new Set(['jpg', 'jpeg', 'png', 'gif', 'webp', 'svg', 'avif', 'bmp', 'ico']);
 const AUDIO_EXTENSIONS = new Set(['mp3', 'wav', 'ogg', 'm4a', 'flac', 'aac', 'opus']);
@@ -38,12 +38,6 @@ export function getFilePreviewKind(name?: string, type?: string): FilePreviewKin
     return 'html';
   }
 
-  // Embedded email message (e.g. a bounce/DSN, or forward-as-attachment).
-  // Rendered by parsing it and showing it like an email, not as a blob.
-  if (mimeType === 'message/rfc822' || ext === 'eml') {
-    return 'eml';
-  }
-
   if (mimeType === 'application/pdf' || ext === 'pdf') {
     return 'pdf';
   }

lib/jmap/client-interface.ts

@@ -97,7 +97,7 @@ export interface IJMAPClient {
   updateEmailKeywords(emailId: string, keywords: Record<string, boolean>): Promise<void>;
   setKeyword(emailId: string, keyword: string): Promise<void>;
   migrateKeyword(oldKeyword: string, newKeyword: string): Promise<number>;
-  deleteEmail(emailId: string, accountId?: string): Promise<void>;
+  deleteEmail(emailId: string): Promise<void>;
   moveToTrash(emailId: string, trashMailboxId: string, accountId?: string, markAsRead?: boolean): Promise<void>;
   batchDeleteEmails(emailIds: string[]): Promise<void>;
   batchMoveEmails(emailIds: string[], toMailboxId: string, accountId?: string, markAsRead?: boolean): Promise<void>;
@@ -109,7 +109,7 @@ export interface IJMAPClient {
     accountId?: string,
   ): Promise<void>;
   moveEmail(emailId: string, toMailboxId: string, accountId?: string): Promise<void>;
-  emptyMailbox(mailboxId: string, accountId?: string): Promise<number>;
+  emptyMailbox(mailboxId: string): Promise<number>;
   markMailboxAsRead(mailboxId: string, accountId?: string): Promise<number>;
   markAllAsRead(excludeMailboxIds?: string[], accountId?: string): Promise<number>;
   markAsSpam(emailId: string, accountId?: string, markAsRead?: boolean): Promise<void>;
@@ -150,30 +150,8 @@ export interface IJMAPClient {
     references?: string[],
     delayedUntil?: string,
     envelopeMailFrom?: string,
-    options?: { requestReadReceipt?: boolean },
   ): Promise<SendEmailResult>;
 
-  importEmail(
-    blobId: string,
-    mailboxIds: Record<string, boolean>,
-    keywords?: Record<string, boolean>,
-    accountId?: string,
-  ): Promise<string | null>;
-
-  sendReadReceipt(params: {
-    to: string;
-    fromEmail: string;
-    fromName?: string;
-    identityId: string;
-    originalMessageId?: string | string[];
-    originalSubject?: string;
-    originalRecipient?: string;
-    automatic?: boolean;
-    accountId?: string;
-    subject?: string;
-    humanText?: string;
-  }): Promise<void>;
-
   sendRawEmail(blob: Blob, identityId: string, sentMailboxId: string, draftMailboxId?: string, delayedUntil?: string, envelopeRecipients?: string[]): Promise<SendEmailResult>;
   getScheduledEmails(limit?: number, position?: number): Promise<{ emails: ScheduledEmail[]; hasMore: boolean; total: number; nextPosition: number }>;
   cancelEmailSubmission(submissionId: string): Promise<void>;
@@ -210,8 +188,8 @@ export interface IJMAPClient {
           signal?: AbortSignal;
         },
   ): Promise<{ blobId: string; size: number; type: string }>;
-  getBlobDownloadUrl(blobId: string, name?: string, type?: string, accountId?: string): string;
-  fetchBlob(blobId: string, name?: string, type?: string, accountId?: string): Promise<Blob>;
+  getBlobDownloadUrl(blobId: string, name?: string, type?: string): string;
+  fetchBlob(blobId: string, name?: string, type?: string): Promise<Blob>;
   fetchBlobAsObjectUrl(blobId: string, name?: string, type?: string): Promise<string>;
   fetchBlobArrayBuffer(blobId: string, name?: string, type?: string): Promise<ArrayBuffer>;
   downloadBlob(blobId: string, name?: string, type?: string): Promise<void>;
@@ -306,12 +284,10 @@ export interface IJMAPClient {
   getFilesAccountId(): string;
   probeFileNodeSupport(): Promise<boolean>;
   listFileNodes(parentId: string | null): Promise<FileNode[]>;
-  listAllFileNodes(): Promise<FileNode[]>;
   getFileNodes(ids: string[] | null, properties?: string[]): Promise<FileNode[]>;
   createFileDirectory(name: string, parentId: string | null): Promise<FileNode>;
   createFileNode(name: string, blobId: string, type: string, size: number, parentId: string | null): Promise<FileNode>;
   updateFileNode(id: string, updates: Partial<Pick<FileNode, 'name' | 'parentId'>>): Promise<void>;
-  updateFileNodes(updates: Record<string, Partial<Pick<FileNode, 'name' | 'parentId'>>>): Promise<{ updated: string[]; notUpdated: Record<string, string> }>;
   destroyFileNodes(ids: string[]): Promise<{ destroyed: string[]; notDestroyed: string[] }>;
   copyFileNode(id: string, newName: string, parentId: string | null): Promise<FileNode>;
 

lib/jmap/client.ts

@@ -1134,9 +1134,7 @@ export class JMAPClient implements IJMAPClient {
 
     const authResultsHeader = headersRecord['Authentication-Results'];
     if (authResultsHeader) {
-      // Multiple Authentication-Results headers (or multiple SPF identities in
-      // one header) must all be considered so the most severe result wins.
-      const value = Array.isArray(authResultsHeader) ? authResultsHeader.join('; ') : authResultsHeader;
+      const value = Array.isArray(authResultsHeader) ? authResultsHeader[0] : authResultsHeader;
       email.authenticationResults = parseAuthenticationResults(value);
     }
 
@@ -1273,10 +1271,10 @@ export class JMAPClient implements IJMAPClient {
     return allIds.length;
   }
 
-  async deleteEmail(emailId: string, accountId?: string): Promise<void> {
+  async deleteEmail(emailId: string): Promise<void> {
     await this.request([
       ["Email/set", {
-        accountId: accountId || this.accountId,
+        accountId: this.accountId,
         destroy: [emailId],
       }, "0"],
     ]);
@@ -1445,20 +1443,19 @@ export class JMAPClient implements IJMAPClient {
     }
   }
 
-  async emptyMailbox(mailboxId: string, accountId?: string): Promise<number> {
-    const targetAccountId = accountId || this.accountId;
+  async emptyMailbox(mailboxId: string): Promise<number> {
     let totalDestroyed = 0;
     let hasMore = true;
 
     while (hasMore) {
       const response = await this.request([
         ["Email/query", {
-          accountId: targetAccountId,
+          accountId: this.accountId,
           filter: { inMailbox: mailboxId },
           limit: 500,
         }, "0"],
         ["Email/set", {
-          accountId: targetAccountId,
+          accountId: this.accountId,
           "#destroy": { resultOf: "0", name: "Email/query", path: "/ids" },
         }, "1"],
       ]);
@@ -2152,18 +2149,11 @@ export class JMAPClient implements IJMAPClient {
     inReplyTo?: string[],
     references?: string[],
     delayedUntil?: string,
-    envelopeMailFrom?: string,
-    options?: { requestReadReceipt?: boolean }
+    envelopeMailFrom?: string
   ): Promise<SendEmailResult> {
     const holdForSeconds = delayedUntil ? this.validateDelayedUntil(delayedUntil) : undefined;
     const emailId = `send-${Date.now()}`;
-    const targetAccountId = (fromEmail && Object.keys(this.accounts).find(id =>
-      this.accounts[id]?.name?.toLowerCase() === fromEmail.toLowerCase()
-    )) || this.accountId;
-    const mboxResp = await this.request([
-      ["Mailbox/get", { accountId: targetAccountId }, "0"]
-    ]);
-    const mailboxes = (mboxResp.methodResponses?.[0]?.[1]?.list || []) as Mailbox[];
+    const mailboxes = await this.getMailboxes();
     const sentMailbox = mailboxes.find(mb => mb.role === 'sent');
     if (!sentMailbox) {
       throw new Error('No sent mailbox found');
@@ -2177,25 +2167,25 @@ export class JMAPClient implements IJMAPClient {
     let identityReplyTo: EmailAddress[] | undefined;
     {
       const identityResponse = await this.request([
-        ["Identity/get", { accountId: targetAccountId }, "0"]
+        ["Identity/get", { accountId: this.accountId }, "0"]
       ]);
 
       if (!finalIdentityId) {
-        finalIdentityId = targetAccountId;
+        finalIdentityId = this.accountId;
       }
       if (identityResponse.methodResponses?.[0]?.[0] === "Identity/get") {
         const identities = (identityResponse.methodResponses[0][1].list || []) as Identity[];
         if (identities.length > 0) {
-          let matchingIdentity = identityId
-            ? identities.find((id) => id.id === identityId)
-            : undefined;
-          if (!matchingIdentity) {
+          if (!identityId) {
             const target = fromEmail || this.username;
-            matchingIdentity = identities.find((id) => id.email === target)
+            const matchingIdentity = identities.find((id) => id.email === target)
               || (!target.includes('@') ? identities.find((id) => id.email.split('@')[0] === target) : undefined);
+            finalIdentityId = matchingIdentity?.id || identities[0].id;
+            identityReplyTo = matchingIdentity?.replyTo || identities[0].replyTo;
+          } else {
+            const matchedIdentity = identities.find((id) => id.id === identityId);
+            identityReplyTo = matchedIdentity?.replyTo;
           }
-          finalIdentityId = matchingIdentity?.id || identities[0].id;
-          identityReplyTo = matchingIdentity?.replyTo || identities[0].replyTo;
         }
       }
     }
@@ -2223,13 +2213,6 @@ export class JMAPClient implements IJMAPClient {
       mailboxIds: { [draftsMailbox.id]: true },
     };
 
-    if (options?.requestReadReceipt) {
-      // RFC 8098: ask the recipient's client to return a Message Disposition
-      // Notification to our address. JMAP lets us set the raw header on create
-      // via the "header:<Name>:asText" property form.
-      emailCreate["header:Disposition-Notification-To:asText"] = fromEmail || this.username;
-    }
-
     if (htmlBody) {
       // Send as multipart/alternative with both text and HTML
       emailCreate.bodyValues = {
@@ -2295,21 +2278,21 @@ export class JMAPClient implements IJMAPClient {
         destroy: [draftId],
       }, "0"]);
       methodCalls.push(["Email/set", {
-        accountId: targetAccountId,
+        accountId: this.accountId,
         create: { [emailId]: emailCreate },
       }, "1"]);
       methodCalls.push(["EmailSubmission/set", {
-        accountId: this.getSubmissionAccountId(targetAccountId),
+        accountId: this.getSubmissionAccountId(),
         create: buildSubmissionCreate("1"),
         onSuccessUpdateEmail,
       }, "2"]);
     } else {
       methodCalls.push(["Email/set", {
-        accountId: targetAccountId,
+        accountId: this.accountId,
         create: { [emailId]: emailCreate },
       }, "0"]);
       methodCalls.push(["EmailSubmission/set", {
-        accountId: this.getSubmissionAccountId(targetAccountId),
+        accountId: this.getSubmissionAccountId(),
         create: buildSubmissionCreate("1"),
         onSuccessUpdateEmail,
       }, "1"]);
@@ -3018,125 +3001,21 @@ export class JMAPClient implements IJMAPClient {
     throw new Error('Invalid upload response: blobId not found');
   }
 
-  /**
-   * Import a raw RFC822 message (referenced by a previously-uploaded blob) into
-   * one or more mailboxes. Returns the new email id. Used for sending MDNs,
-   * where the exact MIME bytes must be preserved (Email/set can't express a
-   * multipart/report report-type parameter reliably).
-   */
-  async importEmail(
-    blobId: string,
-    mailboxIds: Record<string, boolean>,
-    keywords?: Record<string, boolean>,
-    accountId?: string
-  ): Promise<string | null> {
-    const targetAccountId = accountId || this.accountId;
-    const creationId = `imp-${Date.now()}`;
-    const response = await this.request([
-      ["Email/import", {
-        accountId: targetAccountId,
-        emails: {
-          [creationId]: { blobId, mailboxIds, keywords: keywords || { "$seen": true } },
-        },
-      }, "0"],
-    ]);
-    const res = response.methodResponses?.[0];
-    if (res?.[0] !== "Email/import") {
-      console.error('Email/import: unexpected response', res);
-      return null;
-    }
-    const payload = res[1] as {
-      created?: Record<string, { id: string }>;
-      notCreated?: Record<string, { type?: string; description?: string }>;
-    };
-    const created = payload?.created?.[creationId];
-    if (!created) {
-      const reason = payload?.notCreated?.[creationId];
-      console.error('Email/import failed:', reason || payload);
-      throw new Error(`Email/import: ${reason?.description || reason?.type || 'unknown error'}`);
-    }
-    return created.id;
-  }
-
-  /**
-   * Send an RFC 8098 Message Disposition Notification (read receipt) in reply
-   * to a message that carried a Disposition-Notification-To header. Builds the
-   * multipart/report, uploads it as a blob, imports it into Sent, then submits
-   * it with an explicit envelope (MAIL FROM = our identity, RCPT TO = the
-   * requesting address).
-   */
-  async sendReadReceipt(params: {
-    to: string;
-    fromEmail: string;
-    fromName?: string;
-    identityId: string;
-    originalMessageId?: string | string[];
-    originalSubject?: string;
-    originalRecipient?: string;
-    automatic?: boolean;
-    accountId?: string;
-    subject?: string;
-    humanText?: string;
-  }): Promise<void> {
-    const targetAccountId = params.accountId || this.accountId;
-    const { buildMdnMessage } = await import("@/lib/mdn");
-    const raw = buildMdnMessage(params);
-
-    const file = new File([raw], "receipt.eml", { type: "message/rfc822" });
-    const { blobId } = await this.uploadBlob(file);
-
-    const mailboxes = await this.getMailboxes();
-    const targetMailbox = mailboxes.find(mb => mb.role === 'sent') || mailboxes[0];
-    if (!targetMailbox) throw new Error('No mailbox available for MDN import');
-
-    const emailId = await this.importEmail(
-      blobId,
-      { [targetMailbox.id]: true },
-      { "$seen": true },
-      targetAccountId
-    );
-    if (!emailId) throw new Error('MDN import failed');
-
-    const subId = `mdnsub-${Date.now()}`;
-    const response = await this.request([
-      ["EmailSubmission/set", {
-        accountId: targetAccountId,
-        create: {
-          [subId]: {
-            emailId,
-            identityId: params.identityId,
-            envelope: {
-              mailFrom: { email: params.fromEmail },
-              rcptTo: [{ email: params.to }],
-            },
-          },
-        },
-      }, "0"],
-    ]);
-    const subRes = response.methodResponses?.[0];
-    const notCreated = (subRes?.[1] as { notCreated?: Record<string, { type?: string; description?: string }> })?.notCreated?.[subId];
-    if (notCreated) {
-      throw new Error(`MDN submission failed: ${notCreated.description || notCreated.type || 'unknown'}`);
-    }
-  }
-
-  getBlobDownloadUrl(blobId: string, name?: string, type?: string, accountId?: string): string {
+  getBlobDownloadUrl(blobId: string, name?: string, type?: string): string {
     if (!this.downloadUrl) {
       throw new Error('Download URL not available. Please reconnect.');
     }
 
-    // RFC 6570 level 1 URI template expansion. Blobs are scoped per account,
-    // so a caller fetching a blob from a delegated/shared account must pass
-    // that owner's accountId rather than defaulting to the primary one.
+    // RFC 6570 level 1 URI template expansion
     return this.downloadUrl
-      .replace('{accountId}', encodeURIComponent(accountId || this.accountId))
+      .replace('{accountId}', encodeURIComponent(this.accountId))
       .replace('{blobId}', encodeURIComponent(blobId))
       .replace('{name}', encodeURIComponent(name || 'download'))
       .replace('{type}', encodeURIComponent(type || 'application/octet-stream'));
   }
 
-  async fetchBlob(blobId: string, name?: string, type?: string, accountId?: string): Promise<Blob> {
-    const url = this.getBlobDownloadUrl(blobId, name, type, accountId);
+  async fetchBlob(blobId: string, name?: string, type?: string): Promise<Blob> {
+    const url = this.getBlobDownloadUrl(blobId, name, type);
     const response = await this.authenticatedFetch(url, {});
     if (!response.ok) {
       throw new Error(`Failed to fetch blob: ${response.status}`);
@@ -5026,46 +4905,54 @@ export class JMAPClient implements IJMAPClient {
   }
 
   async listFileNodes(parentId: string | null): Promise<FileNode[]> {
-    // FileNode/query omits folder nodes in Stalwart (see listAllFileNodes), so
-    // we enumerate the whole account and filter children client-side.
-    const all = await this.listAllFileNodes();
-    return all.filter(n => (n.parentId ?? null) === parentId);
-  }
-
-  /**
-   * Fetch every FileNode in the account, files AND folders, to build the folder
-   * hierarchy client-side from parentId links.
-   *
-   * IMPORTANT: this uses `FileNode/get` with `ids: null` (return-all), NOT
-   * `FileNode/query`. Stalwart's FileNode/query only returns leaf files - it
-   * omits container (folder) nodes entirely - so a query-based listing made
-   * every folder invisible (the whole account looked like a single root file).
-   */
-  async listAllFileNodes(): Promise<FileNode[]> {
     const accountId = this.getFilesAccountId();
+    const filter: Record<string, unknown> = {};
+    if (parentId !== null) {
+      filter.parentId = parentId;
+    }
+    // When parentId is null (root level), use empty filter to get all nodes.
+    // Stalwart's FileNode/query does not support parentId: null as a filter value.
 
     const response = await this.request(
-      [["FileNode/get", { accountId, ids: null, properties: JMAPClient.FILE_NODE_PROPERTIES }, "fng0"]],
+      [
+        ["FileNode/query", { accountId, filter }, "fnq0"],
+        ["FileNode/get", { accountId, "#ids": { resultOf: "fnq0", name: "FileNode/query", path: "/ids" }, properties: JMAPClient.FILE_NODE_PROPERTIES }, "fng0"],
+      ],
       this.fileUsing(),
     );
 
-    const getResult = response.methodResponses?.find(r => r[0] === "FileNode/get" || (r[0] === "error" && r[2] === "fng0"));
-    if (!getResult || getResult[0] === "error") {
-      console.error('[Files] FileNode/get error:', getResult?.[1]);
-      throw new Error(getResult?.[1]?.description || "FileNode list failed");
+    // Check if query failed first
+    const queryResult = response.methodResponses?.find(r => r[0] === "FileNode/query" || (r[0] === "error" && r[2] === "fnq0"));
+    if (queryResult && queryResult[0] === "error") {
+      console.error('[Files] FileNode/query error:', queryResult[1]);
+      throw new Error(queryResult[1]?.description || "FileNode/query failed");
     }
-    return (getResult[1].list || []) as FileNode[];
+
+    const getResult = response.methodResponses?.find(r => r[0] === "FileNode/get" || (r[0] === "error" && r[2] === "fnq0"));
+    if (!getResult) {
+      console.error('[Files] No FileNode/get response. Full response:', JSON.stringify(response.methodResponses));
+      throw new Error("FileNode list failed - no response");
+    }
+    if (getResult[0] === "error") {
+      console.error('[Files] FileNode/get error:', getResult[1]);
+      throw new Error(getResult[1]?.description || "FileNode list failed");
+    }
+    const nodes = (getResult[1].list || []) as FileNode[];
+    // When listing root, filter client-side to only show root-level items
+    if (parentId === null) {
+      return nodes.filter(n => n.parentId === null);
+    }
+    return nodes;
   }
 
   async createFileDirectory(name: string, parentId: string | null): Promise<FileNode> {
     const accountId = this.getFilesAccountId();
 
-    // A FileNode is a folder (container) only when it has no content - i.e. no
-    // blobId, type or size, so the server stores it with `file == null`. Sending
-    // any of those - as older builds did (type "d" + an empty blob) - makes it a
-    // 0-byte FILE that nothing can ever be parented under, which is what caused
-    // "Parent ID does not exist or is not a folder" during the #379 migration.
-    const dirProps: Record<string, unknown> = { name };
+    // Stalwart requires a blobId even for directories - upload an empty blob
+    const emptyBlob = new File([], name, { type: 'application/x-directory' });
+    const { blobId } = await this.uploadBlob(emptyBlob);
+
+    const dirProps: Record<string, unknown> = { name, type: "d", blobId, size: 0 };
     if (parentId !== null) {
       dirProps.parentId = parentId;
     }
@@ -5144,39 +5031,6 @@ export class JMAPClient implements IJMAPClient {
     }
   }
 
-  /**
-   * Update many FileNodes in a single FileNode/set call. Returns the ids that
-   * were updated and a map of id -> error for any the server rejected. Never
-   * throws for per-node failures (only for a whole-method error).
-   */
-  async updateFileNodes(updates: Record<string, Partial<Pick<FileNode, 'name' | 'parentId'>>>): Promise<{ updated: string[]; notUpdated: Record<string, string> }> {
-    const ids = Object.keys(updates);
-    if (ids.length === 0) return { updated: [], notUpdated: {} };
-    const accountId = this.getFilesAccountId();
-
-    const response = await this.request(
-      [["FileNode/set", { accountId, update: updates }, "fns0"]],
-      this.fileUsing(),
-    );
-
-    const result = response.methodResponses?.[0];
-    if (!result || result[0] === "error") {
-      throw new Error(result?.[1]?.description || "FileNode/set update failed");
-    }
-
-    const updatedMap: Record<string, unknown> = result[1].updated || {};
-    const notUpdatedMap: Record<string, { description?: string }> = result[1].notUpdated || {};
-    const notUpdated: Record<string, string> = {};
-    for (const id of Object.keys(notUpdatedMap)) {
-      notUpdated[id] = notUpdatedMap[id]?.description || 'not updated';
-    }
-    // Servers may omit the `updated` map; treat anything not rejected as updated.
-    const updated = Object.keys(updatedMap).length > 0
-      ? Object.keys(updatedMap)
-      : ids.filter(id => !(id in notUpdated));
-    return { updated, notUpdated };
-  }
-
   async destroyFileNodes(ids: string[]): Promise<{ destroyed: string[]; notDestroyed: string[] }> {
     const accountId = this.getFilesAccountId();
 

lib/jmap/sieve-types.ts

@@ -13,21 +13,14 @@ export interface SieveCapabilities {
   externalLists: string[];
 }
 
-export type FilterConditionField =
-  | 'from' | 'to' | 'cc' | 'subject' | 'header' | 'size' | 'body'
-  | 'attachment';
+export type FilterConditionField = 'from' | 'to' | 'cc' | 'subject' | 'header' | 'size' | 'body';
 
 export type FilterComparator =
   | 'contains' | 'not_contains'
   | 'is' | 'not_is'
   | 'starts_with' | 'ends_with'
   | 'matches'
-  | 'greater_than' | 'less_than'
-  // For field === 'attachment':
-  //   has_any  → message has any attachment (Content-Disposition: attachment)
-  //   has_type → message has an attachment whose Content-Type matches `value`
-  //              (substring match, e.g. "application/pdf" or "image/")
-  | 'has_any' | 'has_type';
+  | 'greater_than' | 'less_than';
 
 export type FilterActionType =
   | 'move' | 'copy' | 'forward'
@@ -37,16 +30,7 @@ export type FilterActionType =
 export interface FilterCondition {
   field: FilterConditionField;
   comparator: FilterComparator;
-  /**
-   * Match value. Use a string array for OR-within-condition semantics
-   * (e.g. `["@domain1.com", "@domain2.com"]` matches mail from either).
-   * Sieve emits the array as a list literal which the implementation
-   * treats as "matches any item". Use a plain string for single-value
-   * conditions; existing single-value rules continue to work unchanged.
-   *
-   * Not supported for: size (numeric), has_any (no value).
-   */
-  value: string | string[];
+  value: string;
   headerName?: string;
 }
 

lib/jmap/types.ts

@@ -75,16 +75,6 @@ export interface AuthenticationResults {
     result: 'pass' | 'fail' | 'softfail' | 'neutral' | 'none' | 'temperror' | 'permerror';
     domain?: string;
     ip?: string;
-    /**
-     * All SPF results when the server evaluated multiple identities (HELO and
-     * MAIL FROM). Present only when more than one result was found; `result`
-     * above is the most severe of these.
-     */
-    all?: Array<{
-      result: 'pass' | 'fail' | 'softfail' | 'neutral' | 'none' | 'temperror' | 'permerror';
-      domain?: string;
-      identity?: 'helo' | 'mailfrom';
-    }>;
   };
   dkim?: {
     result: 'pass' | 'fail' | 'policy' | 'neutral' | 'temperror' | 'permerror';
@@ -498,10 +488,6 @@ export interface Calendar {
   // can route mutations to the right client. Distinct from `accountId`
   // which is the JMAP server's own account UUID.
   localAccountId?: string;
-  // Set when `color` has been replaced by the viewer's local override for a
-  // shared calendar (see lib/shared-calendar-colors). When true, the override
-  // wins over per-event colors so the whole shared calendar paints uniformly.
-  colorIsLocalOverride?: boolean;
 }
 
 export interface CalendarRights {

lib/mdn.ts

@@ -1,154 +0,0 @@
-// Builds an RFC 8098 Message Disposition Notification (MDN) as a raw RFC 5322
-// message string. JMAP/Stalwart has no native MDN support, so the client
-// constructs the multipart/report itself and sends it via
-// blob-upload -> Email/import -> EmailSubmission/set (see client.sendReadReceipt).
-//
-// The message has two parts:
-//   1. text/plain  — human-readable explanation (English, ASCII; rarely shown)
-//   2. message/disposition-notification — the machine-readable fields
-// The optional third part (original message/headers) is omitted; RFC 8098 §3.1
-// permits a two-part report.
-
-export interface MdnOptions {
-  /** Address that requested the receipt (Disposition-Notification-To) — the MDN recipient. */
-  to: string;
-  /** Our identity address (sender of the MDN). */
-  fromEmail: string;
-  /** Optional display name for the From header. */
-  fromName?: string;
-  /** Original Message-ID. JMAP may hand this back as a string[]
-   *  (header:Message-ID:asMessageIds), so accept both. */
-  originalMessageId?: string | string[];
-  /** Original Subject (used to build the MDN subject). */
-  originalSubject?: string;
-  /**
-   * The address the original message was delivered to (our address/alias).
-   * Used for Final-Recipient/Original-Recipient. Falls back to fromEmail.
-   */
-  originalRecipient?: string;
-  /** true => automatic-action (setting "always"); false => manual-action (user clicked send). */
-  automatic?: boolean;
-  /** Reporting-UA value, e.g. "mail.dornig.de; Bulwark Webmail". */
-  reportingUa?: string;
-  /** Localized full Subject line. Defaults to "Read: <originalSubject>". */
-  subject?: string;
-  /** Localized human-readable explanation (first report part). Defaults to English. */
-  humanText?: string;
-}
-
-const DAYS = ["Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"];
-const MONTHS = ["Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"];
-
-/** RFC 5322 date in UTC, e.g. "Thu, 28 May 2026 14:23:00 +0000". */
-function rfc5322Date(d: Date = new Date()): string {
-  const pad = (n: number) => String(n).padStart(2, "0");
-  return `${DAYS[d.getUTCDay()]}, ${pad(d.getUTCDate())} ${MONTHS[d.getUTCMonth()]} ${d.getUTCFullYear()} ` +
-    `${pad(d.getUTCHours())}:${pad(d.getUTCMinutes())}:${pad(d.getUTCSeconds())} +0000`;
-}
-
-/** UTF-8 string -> base64, without the deprecated unescape(). */
-function utf8ToBase64(value: string): string {
-  const bytes = new TextEncoder().encode(value);
-  let binary = "";
-  for (let i = 0; i < bytes.length; i++) binary += String.fromCharCode(bytes[i]);
-  return btoa(binary);
-}
-
-/** UTF-8 base64 body, wrapped at 76 chars per RFC 2045. */
-function base64Body(text: string): string {
-  return (utf8ToBase64(text).match(/.{1,76}/g) || []).join("\r\n");
-}
-
-/** RFC 2047 encoded-word for header values that contain non-ASCII characters. */
-function encodeHeaderWord(value: string): string {
-  // eslint-disable-next-line no-control-regex
-  if (!/[^\x00-\x7F]/.test(value)) return value;
-  return `=?UTF-8?B?${utf8ToBase64(value)}?=`;
-}
-
-function ensureAngles(messageId: string | string[] | undefined): string {
-  // JMAP often returns Message-ID as a string[] (header:...:asMessageIds), so
-  // normalize string | string[] | undefined down to a single bracketed id.
-  const raw = Array.isArray(messageId) ? messageId[0] : messageId;
-  if (typeof raw !== "string") return "";
-  const trimmed = raw.trim();
-  if (!trimmed) return "";
-  return trimmed.startsWith("<") ? trimmed : `<${trimmed}>`;
-}
-
-function randomToken(): string {
-  const rnd = Math.random().toString(36).slice(2);
-  return `${Date.now().toString(36)}.${rnd}`;
-}
-
-/**
- * Build the raw RFC 5322 MDN message. Lines are CRLF-terminated as required
- * by the MIME standard so the bytes import/transmit verbatim.
- */
-export function buildMdnMessage(opts: MdnOptions): string {
-  const finalRecipient = opts.originalRecipient || opts.fromEmail;
-  const domain = (opts.fromEmail.split("@")[1] || "localhost").trim();
-  const messageId = `<mdn.${randomToken()}@${domain}>`;
-  const boundary = `----=_MDN_${randomToken()}`;
-  const origMsgId = ensureAngles(opts.originalMessageId); // normalized "<...>" or ""
-
-  const fromHeader = opts.fromName
-    ? `${encodeHeaderWord(opts.fromName)} <${opts.fromEmail}>`
-    : opts.fromEmail;
-
-  const subject = encodeHeaderWord(
-    opts.subject ?? `Read: ${opts.originalSubject || ""}`.trim()
-  );
-
-  const disposition = opts.automatic
-    ? "automatic-action/MDN-sent-automatically; displayed"
-    : "manual-action/MDN-sent-manually; displayed";
-
-  const reportingUa = opts.reportingUa || `${domain}; Bulwark Webmail`;
-
-  // Human-readable part. Caller passes a localized humanText; fall back to
-  // English. Encoded as UTF-8/base64 below so any language survives.
-  const humanText = opts.humanText ?? [
-    `This is a return receipt for the message you sent to ${finalRecipient}.`,
-    ``,
-    `Note: This receipt only acknowledges that the message was displayed on the`,
-    `recipient's computer. There is no guarantee that the recipient has read or`,
-    `understood the message contents.`,
-  ].join("\r\n");
-
-  // Machine-readable disposition-notification part (pure ASCII tokens).
-  const mdnFields = [
-    `Reporting-UA: ${reportingUa}`,
-    `Final-Recipient: rfc822;${finalRecipient}`,
-    ...(opts.originalRecipient ? [`Original-Recipient: rfc822;${opts.originalRecipient}`] : []),
-    ...(origMsgId ? [`Original-Message-ID: ${origMsgId}`] : []),
-    `Disposition: ${disposition}`,
-  ].join("\r\n");
-
-  return [
-    `Date: ${rfc5322Date()}`,
-    `From: ${fromHeader}`,
-    `To: ${opts.to}`,
-    `Subject: ${subject}`,
-    `Message-ID: ${messageId}`,
-    ...(origMsgId ? [`In-Reply-To: ${origMsgId}`] : []),
-    `MIME-Version: 1.0`,
-    `Content-Type: multipart/report; report-type=disposition-notification;`,
-    `\tboundary="${boundary}"`,
-    ``,
-    `--${boundary}`,
-    `Content-Type: text/plain; charset=utf-8`,
-    `Content-Transfer-Encoding: base64`,
-    ``,
-    base64Body(humanText),
-    ``,
-    `--${boundary}`,
-    `Content-Type: message/disposition-notification`,
-    `Content-Transfer-Encoding: 7bit`,
-    ``,
-    mdnFields,
-    ``,
-    `--${boundary}--`,
-    ``,
-  ].join("\r\n");
-}

lib/oauth/token-exchange.ts

@@ -19,12 +19,6 @@ export function getDiscoveryValidator(): EndpointValidator | undefined {
 function getGlobalClientSecret(): string {
   const adminSecret = configManager.get<string>('oauthClientSecret', '');
   if (adminSecret) return adminSecret;
-
-  const adminFileSecret = readFileEnv(
-    configManager.get<string>('oauthClientSecretFile', ''),
-  );
-  if (adminFileSecret) return adminFileSecret;
-
   return process.env.OAUTH_CLIENT_SECRET || readFileEnv(process.env.OAUTH_CLIENT_SECRET_FILE) || '';
 }
 

lib/plugin-loader.ts

@@ -10,25 +10,32 @@ import {
   activateAllSandboxed,
   deactivateAllSandboxed,
   setSandboxStoreAccessor,
+  setSandboxLocale,
   setupSandboxAutoDisable,
 } from './plugin-sandbox/loader';
 import { all as allActive, get as getActive } from './plugin-sandbox/registry';
 
-// Re-export so the plugin store can keep the sandbox locale in step via this
-// facade, instead of importing lib/plugin-sandbox/loader directly (which would
-// also pull the hook buses into consumers' module graphs).
-export { setSandboxLocale } from './plugin-sandbox/loader';
-
 /**
- * Historically re-published React/ReactDOM on `globalThis` for the blob-import
- * loader, and later also bootstrapped plugin locale sync. Both are obsolete:
- * the sandbox injects React per-iframe, and locale sync now lives where plugin
- * activation is orchestrated (stores/plugin-store -> initializePlugins, via
- * setSandboxLocale). Kept as a no-op for the legacy activateAllPlugins()
- * wrapper and its test.
+ * Previously: re-published React/ReactDOM on `globalThis.__PLUGIN_EXTERNALS__`
+ * so blob-imported plugin code could resolve `react`. With the sandbox model
+ * plugins receive React injected as a function argument inside their iframe
+ * runtime - there is nothing to expose on the host window.
+ *
+ * Kept as a no-op for callers that still invoke it during app bootstrap.
  */
 export function exposePluginExternals(): void {
-  /* no-op */
+  if (typeof window === 'undefined') return;
+  // Initialise the locale sync once. Importing the store lazily avoids the
+  // circular module graph we used to fight before the sandbox refactor.
+  void import('@/stores/locale-store').then(({ useLocaleStore }) => {
+    setSandboxLocale(useLocaleStore.getState().locale);
+    useLocaleStore.subscribe((state) => setSandboxLocale(state.locale));
+    // Mirror on a global so the slot-iframe component can read it at spawn.
+    (globalThis as unknown as { __APP_LOCALE__?: string }).__APP_LOCALE__ = useLocaleStore.getState().locale;
+    useLocaleStore.subscribe((state) => {
+      (globalThis as unknown as { __APP_LOCALE__?: string }).__APP_LOCALE__ = state.locale;
+    });
+  }).catch(() => { /* locale sync is best-effort */ });
 }
 
 // ─── Store accessor (status updates) ──────────────────────────

lib/plugin-projection.ts

@@ -5,40 +5,6 @@
 import type { Email } from '@/lib/jmap/types';
 import type { EmailReadView } from '@/lib/plugin-types';
 
-// Resolve a message's plain-text body from its JMAP body parts. Plugins that
-// translate or scan content need the real body, not just the short `preview`
-// snippet. Prefers text/plain parts; falls back to stripped HTML, then preview.
-function plainTextFromEmail(email: Email): string {
-  const values = email.bodyValues || {};
-  const collect = (parts?: { partId: string }[]) =>
-    (parts || [])
-      .map((p) => values[p.partId]?.value)
-      .filter((v): v is string => typeof v === 'string' && v.length > 0)
-      .join('\n')
-      .trim();
-
-  const text = collect(email.textBody);
-  if (text) return text;
-
-  const html = collect(email.htmlBody);
-  if (html) {
-    return html
-      .replace(/<(script|style)[\s\S]*?<\/\1>/gi, ' ')
-      .replace(/<[^>]+>/g, ' ')
-      .replace(/&nbsp;/gi, ' ')
-      .replace(/&amp;/gi, '&')
-      .replace(/&lt;/gi, '<')
-      .replace(/&gt;/gi, '>')
-      .replace(/&#39;|&apos;/gi, "'")
-      .replace(/&quot;/gi, '"')
-      .replace(/[ \t]{2,}/g, ' ')
-      .replace(/\n{3,}/g, '\n\n')
-      .trim();
-  }
-
-  return (email.preview || '').trim();
-}
-
 export function emailToReadView(email: Email): EmailReadView {
   return {
     id: email.id,
@@ -53,7 +19,6 @@ export function emailToReadView(email: Email): EmailReadView {
     isFlagged: !!email.keywords?.['$flagged'],
     hasAttachment: email.hasAttachment,
     preview: email.preview || '',
-    text: plainTextFromEmail(email),
     keywords: Object.keys(email.keywords || {}).filter(k => email.keywords[k]),
     auth: email.authenticationResults,
   };

lib/plugin-sandbox/host-api.ts

@@ -140,7 +140,7 @@ async function doHttpPost(plugin: InstalledPlugin, path: string, body: unknown):
     headers['Authorization'] = client.getAuthHeader();
     headers['X-JMAP-Username'] = client.getUsername();
   }
-  const res = await apiFetch(url.pathname + url.search, {
+  const res = await fetch(url.pathname + url.search, {
     method: 'POST',
     headers,
     body: JSON.stringify(body),

lib/plugin-sandbox/host-bridge.ts

@@ -10,8 +10,6 @@
 import type { InstalledPlugin, SlotName } from '../plugin-types';
 import { dispatchApiCall } from './host-api';
 import { SANDBOX_PATH } from './protocol';
-import { withBasePath } from '../browser-navigation';
-import { snapshotHostTheme, type ThemeSnapshot } from './host-theme';
 import type {
   SandboxToHost, HostToSandbox, InitMsg, InitPayload,
 } from './protocol';
@@ -145,10 +143,7 @@ export class SandboxInstance {
       this.iframe.style.width = '100%';
       this.iframe.style.height = '0px';
     }
-    // Prefix with the mount path so the sandbox route resolves under a
-    // subpath deployment (NEXT_PUBLIC_BASE_PATH=/webmail). A bare
-    // "/plugin-sandbox" would hit the origin root and 404, breaking plugins.
-    this.iframe.src = withBasePath(SANDBOX_PATH);
+    this.iframe.src = SANDBOX_PATH;
 
     this.listener = (ev) => this.onMessage(ev);
     window.addEventListener('message', this.listener);
@@ -279,12 +274,6 @@ export class SandboxInstance {
     this.send({ type: 'locale-change', locale });
   }
 
-  /** Push a new resolved theme so the slot iframe re-injects its theme CSS. */
-  setTheme(theme: ThemeSnapshot): void {
-    if (this.destroyed) return;
-    this.send({ type: 'theme-change', theme });
-  }
-
   updateProps(props: Record<string, unknown>): void {
     if (this.destroyed) return;
     // Stale references would leak if we kept growing the table without
@@ -353,7 +342,6 @@ export function createSlotInstance(opts: SlotOptions): SandboxInstance {
     },
     extraProps: opts.extraProps,
     locale: opts.locale,
-    theme: snapshotHostTheme(),
   };
   return new SandboxInstance(opts.plugin, payload, opts.hostContainer, opts.onResize);
 }

lib/plugin-sandbox/host-theme.ts

@@ -1,131 +0,0 @@
-// Theme bridge for plugin slot iframes.
-//
-// Slot iframes run with an opaque ("null") origin, so they can't load the
-// host's globals.css or web fonts cross-origin (see app/(sandbox)/layout.tsx).
-// The result: plugin slot UIs fall back to the UA default serif font and have
-// no knowledge of the host's light/dark (or custom) theme.
-//
-// To fix that without any cross-origin asset fetch, the host snapshots the
-// *resolved* theme — the computed `--color-*` token values, the resolved
-// font-family (which is a pure system-font stack, so no fetch is needed), and
-// whether dark mode is active — and ships it across the postMessage bridge.
-// The sandbox runtime replays the snapshot as an injected <style> block plus a
-// `.dark` class, so every plugin slot inherits the app font and can react to
-// theme changes by reading `var(--color-*)`.
-
-/** A replayable description of the host's currently resolved theme. */
-export interface ThemeSnapshot {
-  /** Whether the host has dark mode active (`.dark` on <html>). */
-  dark: boolean;
-  /** Resolved font-family stack (system fonts only — safe to replay verbatim). */
-  fontFamily: string;
-  /** Resolved values for each mirrored CSS custom property. */
-  vars: Record<string, string>;
-}
-
-// CSS custom properties mirrored into plugin slots. Kept in sync with the
-// `:root` token block in app/globals.css. Both the colour tokens (the stable
-// theming API surface) and the tier-2 typography/density tokens are included so
-// plugins can match the host's metrics, not just its colours.
-const THEME_TOKENS: readonly string[] = [
-  '--color-border',
-  '--color-input',
-  '--color-ring',
-  '--color-background',
-  '--color-foreground',
-  '--color-primary',
-  '--color-primary-foreground',
-  '--color-secondary',
-  '--color-secondary-foreground',
-  '--color-muted',
-  '--color-muted-foreground',
-  '--color-accent',
-  '--color-accent-foreground',
-  '--color-destructive',
-  '--color-destructive-foreground',
-  '--color-popover',
-  '--color-popover-foreground',
-  '--color-sidebar',
-  '--color-sidebar-foreground',
-  '--color-sidebar-border',
-  '--color-sidebar-accent',
-  '--color-sidebar-accent-foreground',
-  '--color-card',
-  '--color-card-foreground',
-  '--color-success',
-  '--color-success-foreground',
-  '--color-warning',
-  '--color-warning-foreground',
-  '--color-info',
-  '--color-info-foreground',
-  '--color-selection',
-  '--color-selection-foreground',
-  '--color-unread',
-  '--color-chart-1',
-  '--color-chart-2',
-  '--color-chart-3',
-  '--color-chart-4',
-  '--color-chart-5',
-  '--font-size-base',
-  '--list-item-height',
-  '--transition-duration',
-  '--density-item-py',
-  '--density-item-gap',
-  '--density-header-py',
-  '--density-card-p',
-  '--density-sidebar-py',
-];
-
-// Mirrors the body font stack in app/globals.css. Used when no document is
-// available (SSR) or the body has no resolvable font-family yet.
-const FALLBACK_FONT_FAMILY =
-  '-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans Thai", "Leelawadee UI", Tahoma, sans-serif';
-
-/**
- * Read the host's resolved theme off `<html>`. Reading computed styles means
- * the snapshot automatically reflects the active built-in *and* custom theme,
- * not just the static globals.css defaults.
- */
-export function snapshotHostTheme(): ThemeSnapshot {
-  if (typeof document === 'undefined' || typeof getComputedStyle === 'undefined') {
-    return { dark: false, fontFamily: FALLBACK_FONT_FAMILY, vars: {} };
-  }
-  const root = document.documentElement;
-  const computed = getComputedStyle(root);
-  const vars: Record<string, string> = {};
-  for (const token of THEME_TOKENS) {
-    const value = computed.getPropertyValue(token).trim();
-    if (value) vars[token] = value;
-  }
-  const bodyFont = document.body ? getComputedStyle(document.body).fontFamily : '';
-  return {
-    dark: root.classList.contains('dark'),
-    fontFamily: bodyFont || FALLBACK_FONT_FAMILY,
-    vars,
-  };
-}
-
-/**
- * Build the CSS the sandbox injects to replay a snapshot. Pure (no DOM access)
- * so it can run inside the iframe runtime. The `:root` block restores the
- * host's token values; the `html, body` block gives plugin slots the app font
- * and a theme-aware default text colour with a transparent background (the
- * host's themed container shows through).
- */
-export function themeSnapshotToCSS(snapshot: ThemeSnapshot): string {
-  const declarations = Object.entries(snapshot.vars)
-    .map(([name, value]) => `  ${name}: ${value};`)
-    .join('\n');
-  const colorScheme = snapshot.dark ? 'dark' : 'light';
-  return [
-    ':root {',
-    declarations,
-    `  color-scheme: ${colorScheme};`,
-    '}',
-    'html, body {',
-    `  font-family: ${snapshot.fontFamily};`,
-    '  color: var(--color-foreground, inherit);',
-    '  background: transparent;',
-    '}',
-  ].join('\n');
-}

lib/plugin-sandbox/loader.ts

@@ -41,16 +41,11 @@ export function setSandboxStoreAccessor(a: StoreAccessor): void { storeAccessor
 
 let currentLocale = 'en';
 export function setSandboxLocale(locale: string): void {
-  // Ignore empty/falsy values so a not-yet-seeded locale store can't clobber a
-  // good locale back to '' - the initial 'en' default stands until the real
-  // locale arrives via the store subscription.
-  if (!locale) return;
   currentLocale = locale;
-  // Background instances read `currentLocale` at load time; the slot-iframe
-  // component reads this global at spawn time (plugin-iframe-slot.tsx). Keep
-  // both in step from one place. Already-running instances are not re-pushed,
-  // so a locale switch only affects plugins/slots loaded afterwards.
-  (globalThis as unknown as { __APP_LOCALE__?: string }).__APP_LOCALE__ = locale;
+  // Push to all active background instances.
+  // Slot iframes inherit locale at spawn time; they're short-lived.
+  // (We don't import the registry here to avoid a circular import; the
+  //  PluginIframeSlot subscribes to locale changes on its own.)
 }
 
 // ─── Bundle fetch ─────────────────────────────────────────────

lib/plugin-sandbox/protocol.ts

@@ -9,7 +9,6 @@
 // class instances.
 
 import type { SlotName } from '../plugin-types';
-import type { ThemeSnapshot } from './host-theme';
 
 // ─── Sandbox mode ────────────────────────────────────────────
 
@@ -63,12 +62,6 @@ export interface SlotInit {
    */
   extraProps: Record<string, unknown>;
   locale: string;
-  /**
-   * Resolved host theme (colour tokens, font stack, dark flag). The sandbox
-   * can't load globals.css/fonts cross-origin, so the runtime replays this as
-   * injected CSS + a `.dark` class. Host pushes updates via 'theme-change'.
-   */
-  theme: ThemeSnapshot;
 }
 
 export type InitPayload = BackgroundInit | SlotInit;
@@ -170,9 +163,6 @@ export interface HookInvokeMsg {
 
 export interface LocaleChangeMsg { type: 'locale-change'; locale: string; }
 
-/** Host → sandbox: the resolved theme changed; re-inject the slot's theme CSS. */
-export interface ThemeChangeMsg { type: 'theme-change'; theme: ThemeSnapshot; }
-
 export interface PropsUpdateMsg { type: 'props-update'; props: Record<string, unknown>; }
 
 export interface SlotShouldShowMsg {
@@ -188,7 +178,6 @@ export type HostToSandbox =
   | CallbackResponseMsg
   | HookInvokeMsg
   | LocaleChangeMsg
-  | ThemeChangeMsg
   | PropsUpdateMsg
   | SlotShouldShowMsg;
 

lib/plugin-sandbox/runtime.tsx

@@ -27,7 +27,6 @@ import type {
   BackgroundInit,
   SlotInit,
 } from './protocol';
-import { themeSnapshotToCSS, type ThemeSnapshot } from './host-theme';
 import type { SlotName } from '../plugin-types';
 
 // ─── Module-scope state ──────────────────────────────────────
@@ -68,54 +67,24 @@ function sendToHost(msg: SandboxToHost): void {
   parentWindow.postMessage(msg, parentOrigin);
 }
 
-// ─── Theme replay ────────────────────────────────────────────
-
-const THEME_STYLE_ID = '__plugin_host_theme';
-
-/**
- * Replay a host theme snapshot inside the iframe: inject the token + font CSS
- * and mirror the `.dark` class onto <html> so plugin styles that key off
- * `.dark` (or read `var(--color-*)`) behave like the host. Idempotent — safe
- * to call again on every 'theme-change'.
- */
-function applyHostTheme(theme: ThemeSnapshot): void {
-  if (typeof document === 'undefined') return;
-  let styleEl = document.getElementById(THEME_STYLE_ID) as HTMLStyleElement | null;
-  if (!styleEl) {
-    styleEl = document.createElement('style');
-    styleEl.id = THEME_STYLE_ID;
-    document.head.appendChild(styleEl);
-  }
-  styleEl.textContent = themeSnapshotToCSS(theme);
-  document.documentElement.classList.toggle('dark', theme.dark);
-}
-
 function uid(): string {
   return Math.random().toString(36).slice(2) + Date.now().toString(36);
 }
 
 // ─── Sandboxed API facade (calls flow to host via postMessage) ─
 
-const DEFAULT_API_TIMEOUT_MS = 30_000;
-
-function callApi(method: string, args: unknown[], timeoutMs: number = DEFAULT_API_TIMEOUT_MS): Promise<unknown> {
+function callApi(method: string, args: unknown[]): Promise<unknown> {
   const id = uid();
   return new Promise((resolve, reject) => {
     pendingApi.set(id, { resolve, reject });
     sendToHost({ type: 'api-request', id, method, args });
-    // Bounded so a hung host can't leak the promise forever. Interactive UI
-    // dialogs (ui.confirm/ui.alert) pass timeoutMs <= 0 to opt out: they wait
-    // for human input, the host always resolves them on confirm/cancel/close,
-    // and any still-pending call dies with the iframe on teardown - so there's
-    // nothing to leak, and a thinking user must not trip a 30s timeout.
-    if (timeoutMs > 0 && Number.isFinite(timeoutMs)) {
-      setTimeout(() => {
-        const entry = pendingApi.get(id);
-        if (!entry) return;
-        pendingApi.delete(id);
-        entry.reject(new Error(`API call ${method} timed out after ${Math.round(timeoutMs / 1000)}s`));
-      }, timeoutMs);
-    }
+    // Reject after 30s to prevent unbounded promise leaks if the host hangs.
+    setTimeout(() => {
+      const entry = pendingApi.get(id);
+      if (!entry) return;
+      pendingApi.delete(id);
+      entry.reject(new Error(`API call ${method} timed out after 30s`));
+    }, 30_000);
   });
 }
 
@@ -182,13 +151,12 @@ function buildPluginApi(manifest: PluginManifest) {
       warning: (m: string) => { void callApi('toast.warning', [m]); },
     },
     ui: {
-      /** Opens a host-rendered confirm dialog. Resolves to true on confirm, false otherwise.
-       *  No timeout - it waits for the user's choice. */
+      /** Opens a host-rendered confirm dialog. Resolves to true on confirm, false otherwise. */
       confirm: (opts: { title?: string; message?: string; confirmLabel?: string; cancelLabel?: string; danger?: boolean }) =>
-        callApi('ui.confirm', [opts], 0) as Promise<boolean>,
-      /** Opens a host-rendered alert (one button). Resolves once dismissed. No timeout. */
+        callApi('ui.confirm', [opts]) as Promise<boolean>,
+      /** Opens a host-rendered alert (one button). Resolves once dismissed. */
       alert: (opts: { title?: string; message?: string; confirmLabel?: string }) =>
-        callApi('ui.alert', [opts], 0) as Promise<void>,
+        callApi('ui.alert', [opts]) as Promise<void>,
       /** Opens an http/https URL in a new tab via host `window.open`. */
       openExternalUrl: (url: string, target?: string) =>
         callApi('ui.openExternalUrl', [url, target]) as Promise<void>,
@@ -205,26 +173,6 @@ function buildPluginApi(manifest: PluginManifest) {
       warn:  (...a: unknown[]) => console.warn(`[plugin:${manifest.id}]`, ...a),
       error: (...a: unknown[]) => console.error(`[plugin:${manifest.id}]`, ...a),
     },
-    // Localization for plugins. The host pushes the active locale (init +
-    // 'locale-change'); `t` resolves a key against the plugin's declared
-    // `locales` map (manifest.locales), falling back to English then the key
-    // itself, with optional {placeholder} interpolation.
-    i18n: {
-      get locale(): string {
-        return (globalThis as unknown as { __PLUGIN_LOCALE__?: string }).__PLUGIN_LOCALE__ || 'en';
-      },
-      t(key: string, vars?: Record<string, string | number>): string {
-        const loc = (globalThis as unknown as { __PLUGIN_LOCALE__?: string }).__PLUGIN_LOCALE__ || 'en';
-        const tables = manifest.locales || {};
-        let out = tables[loc]?.[key] ?? tables['en']?.[key] ?? key;
-        if (vars) {
-          for (const [k, v] of Object.entries(vars)) {
-            out = out.split('{' + k + '}').join(String(v));
-          }
-        }
-        return out;
-      },
-    },
   };
 }
 
@@ -333,10 +281,6 @@ async function bootBackground(payload: BackgroundInit): Promise<void> {
 }
 
 function bootSlot(payload: SlotInit): void {
-  // Replay the host theme before first paint so the slot never flashes the UA
-  // default serif font or a light-on-light/dark mismatch.
-  applyHostTheme(payload.theme);
-
   const api = buildPluginApi(payload.manifest);
   const exports = evaluateBundle(payload.code, api);
   pluginExports = exports;
@@ -400,9 +344,6 @@ async function handleInit(payload: InitPayload): Promise<void> {
   if (bootDone) return;
   bootDone = true;
   mode = payload.mode;
-  // Make the active locale available to plugin code (api.i18n) right away -
-  // not only after the first 'locale-change' push.
-  (globalThis as unknown as { __PLUGIN_LOCALE__?: string }).__PLUGIN_LOCALE__ = payload.locale;
   try {
     if (payload.mode === 'background') {
       await bootBackground(payload);
@@ -489,10 +430,6 @@ function handleHostMessage(ev: MessageEvent): void {
       (globalThis as unknown as { __PLUGIN_LOCALE__?: string }).__PLUGIN_LOCALE__ = msg.locale;
       break;
 
-    case 'theme-change':
-      applyHostTheme(msg.theme);
-      break;
-
     case 'props-update':
       slotPropsUpdater?.(msg.props ?? {});
       break;

lib/plugin-types.ts

@@ -374,10 +374,6 @@ export interface EmailReadView {
   hasAttachment: boolean;
   preview: string;
   keywords: string[];
-  /** Full plain-text body of the message (HTML-only bodies are stripped to
-   *  text). Empty string when the host hasn't loaded the body. Same
-   *  `email:read` sensitivity as the rest of this view. */
-  text: string;
   /**
    * Parsed Authentication-Results header (SPF, DKIM, DMARC, reverse-DNS).
    * Absent on stores that didn't parse the header (e.g. bodies not yet

lib/quote-header.ts

@@ -10,17 +10,6 @@ import { formatDateTime } from "@/lib/utils";
 import { emailHooks } from "@/lib/plugin-hooks";
 import type { QuoteHeader, QuoteHeaderContext } from "@/lib/plugin-types";
 
-// Localized label set the caller passes in. Labels live on the client where
-// useTranslations is available; this module stays framework-agnostic.
-export interface QuoteHeaderLabels {
-  /** ICU-formatted reply line, e.g. "On {date}, {from} wrote:" with placeholders already substituted. */
-  formatReplyLine: (vars: { date: string; from: string }) => string;
-  forwardedSeparator: string;
-  fromLabel: string;
-  dateLabel: string;
-  subjectLabel: string;
-}
-
 interface BuildArgs {
   mode: "reply" | "replyAll" | "forward";
   email: {
@@ -35,24 +24,10 @@ interface BuildArgs {
   locale: string;
   timeFormat: "12h" | "24h";
   unknownLabel: string;
-  /**
-   * Localized labels. Optional for backward compatibility; falls back to
-   * English (matching the original hardcoded behaviour) when not supplied.
-   */
-  labels?: QuoteHeaderLabels;
 }
 
-const DEFAULT_LABELS: QuoteHeaderLabels = {
-  formatReplyLine: ({ date, from }) => `On ${date}, ${from} wrote:`,
-  forwardedSeparator: "---------- Forwarded message ----------",
-  fromLabel: "From",
-  dateLabel: "Date",
-  subjectLabel: "Subject",
-};
-
 function defaultHeader(args: BuildArgs): QuoteHeader {
   const { mode, email, timeFormat, unknownLabel } = args;
-  const labels = args.labels ?? DEFAULT_LABELS;
   const date = email.receivedAt
     ? formatDateTime(email.receivedAt, timeFormat, {
         weekday: "short",
@@ -63,25 +38,16 @@ function defaultHeader(args: BuildArgs): QuoteHeader {
     : "";
   const from = email.from?.[0];
   const fromStr = from ? `${from.name || from.email}` : unknownLabel;
-  // Forward header "From:" shows the full sender incl. address ("Name
-  // <email>"), like every mail client. The reply line keeps the bare name
-  // (reads more naturally in "On … wrote:").
-  const fromStrFull = from
-    ? (from.name && from.email && from.name !== from.email
-        ? `${from.name} <${from.email}>`
-        : (from.email || from.name || unknownLabel))
-    : unknownLabel;
   const subject = email.subject || "";
 
   if (mode === "forward") {
-    const text = `${labels.forwardedSeparator}\n${labels.fromLabel}: ${fromStrFull}\n${labels.dateLabel}: ${date}\n${labels.subjectLabel}: ${subject}\n`;
-    const html = `<div>${labels.forwardedSeparator}<br>${labels.fromLabel}: ${fromStrFull}<br>${labels.dateLabel}: ${date}<br>${labels.subjectLabel}: ${subject}<br><br></div>`;
+    const text = `---------- Forwarded message ----------\nFrom: ${fromStr}\nDate: ${date}\nSubject: ${subject}\n`;
+    const html = `<div>---------- Forwarded message ----------<br>From: ${fromStr}<br>Date: ${date}<br>Subject: ${subject}<br><br></div>`;
     return { html, text, wrapInBlockquote: false };
   }
 
-  const replyLine = labels.formatReplyLine({ date, from: fromStr });
-  const text = `${replyLine}\n`;
-  const html = `<div>${replyLine}<br></div>`;
+  const text = `On ${date}, ${fromStr} wrote:\n`;
+  const html = `<div>On ${date}, ${fromStr} wrote:<br></div>`;
   return { html, text, wrapInBlockquote: true };
 }
 

lib/shared-calendar-colors.ts

@@ -1,55 +0,0 @@
-import type { Calendar } from '@/lib/jmap/types';
-
-/**
- * Palette of calendar colors offered in the color picker. Defined here (rather
- * than in the settings UI component) so non-React modules can reuse it without
- * pulling in component code. The settings color picker re-exports this.
- */
-export const CALENDAR_COLORS = [
-  "#3b82f6", // blue
-  "#ef4444", // red
-  "#22c55e", // green
-  "#f59e0b", // amber
-  "#8b5cf6", // violet
-  "#ec4899", // pink
-  "#14b8a6", // teal
-  "#f97316", // orange
-  "#06b6d4", // cyan
-  "#84cc16", // lime
-  "#6366f1", // indigo
-  "#a855f7", // purple
-  "#e11d48", // rose
-  "#0ea5e9", // sky
-  "#10b981", // emerald
-  "#d946ef", // fuchsia
-];
-
-/**
- * Stable key for a shared calendar's local color override. Independent of the
- * Pro-shell id prefix (which changes with the active account), so the override
- * survives shell-mode and account switches. Built from the owning JMAP account
- * + the calendar's original server id.
- */
-export function sharedCalendarColorKey(
-  cal: Pick<Calendar, 'id' | 'originalId' | 'accountId' | 'localAccountId'>,
-): string {
-  const localAccount = cal.localAccountId ?? '';
-  const account = cal.accountId ?? '';
-  const id = cal.originalId ?? cal.id;
-  return `${localAccount}|${account}|${id}`;
-}
-
-/**
- * Pick a random palette color not present in `usedColors`. Once every palette
- * entry is taken, fall back to a random palette color (collisions are
- * unavoidable past CALENDAR_COLORS.length calendars).
- */
-export function pickUnusedCalendarColor(usedColors: Iterable<string>): string {
-  const used = new Set<string>();
-  for (const c of usedColors) {
-    if (c) used.add(c.toLowerCase());
-  }
-  const available = CALENDAR_COLORS.filter((c) => !used.has(c.toLowerCase()));
-  const pool = available.length > 0 ? available : CALENDAR_COLORS;
-  return pool[Math.floor(Math.random() * pool.length)];
-}

lib/sieve/generator.ts

@@ -12,82 +12,42 @@ function escapeString(value: string): string {
   return value.replace(/\\/g, '\\\\').replace(/"/g, '\\"');
 }
 
-// Normalise the condition value to a non-empty string array. Single-value
-// conditions stay one-element; arrays are filtered for empty strings.
-function toValueList(value: string | string[]): string[] {
-  const arr = Array.isArray(value) ? value : [value];
-  return arr.map((v) => (v ?? '').toString()).filter((v) => v.length > 0);
-}
-
-// Render one or many strings as a Sieve string-literal-or-list. Sieve treats
-// `header :contains "From" ["a", "b"]` as "any of a, b" (built-in OR within
-// the condition); the single-string form is emitted unchanged when len === 1
-// so existing scripts and tests stay byte-identical.
-function formatStringArg(values: string[], transform: (s: string) => string = (s) => s): string {
-  if (values.length === 1) {
-    return `"${escapeString(transform(values[0]))}"`;
-  }
-  return `[${values.map((v) => `"${escapeString(transform(v))}"`).join(', ')}]`;
-}
-
 function generateCondition(condition: FilterCondition): string {
   const { field, comparator, value } = condition;
 
   if (field === 'size') {
-    // Size is numeric, single value only.
-    const sizeValue = Array.isArray(value) ? value[0] : value;
     const op = comparator === 'greater_than' ? ':over' : ':under';
-    return `size ${op} ${sizeValue}`;
+    return `size ${op} ${value}`;
   }
 
-  const values = toValueList(value);
-
   if (field === 'body') {
     const matchType = comparator === 'is' ? ':is' : ':contains';
-    return `body ${matchType} ${formatStringArg(values)}`;
-  }
-
-  if (field === 'attachment') {
-    // RFC 5703: :mime :anychild matches against headers of any MIME part.
-    // has_any tests Content-Disposition for "attachment"; has_type matches
-    // the file extension against the filename across BOTH Content-Disposition
-    // (filename= parameter) and Content-Type (name= parameter) - many older
-    // senders (Microsoft SMTPSVC, PrintToMail, etc.) put the filename only
-    // in Content-Type and leave Content-Disposition without a filename.
-    // RFC 5228 §5.7 allows a string-list for header names; the test passes
-    // if any listed header matches. Wildcard "*.<ext>*" catches quoted,
-    // unquoted, and RFC-2231-encoded forms alike since ".<ext>" appears as
-    // a literal substring in all of them.
-    // Multiple extensions become a Sieve value-list ["*.pdf*", "*.xml*"]
-    // = OR within the condition (any item matches → test passes).
-    if (comparator === 'has_any') {
-      return `header :mime :anychild :contains "Content-Disposition" "attachment"`;
-    }
-    const normalised = values.map((v) => v.replace(/^[.*]+/, '').trim()).filter(Boolean);
-    return `header :mime :anychild :matches ["Content-Disposition", "Content-Type"] ${formatStringArg(normalised, (ext) => `*.${ext}*`)}`;
+    return `body ${matchType} "${escapeString(value)}"`;
   }
 
   const headerName = field === 'header'
     ? (condition.headerName || 'X-Unknown')
     : HEADER_MAP[field];
 
+  const escaped = escapeString(value);
+
   switch (comparator) {
     case 'contains':
-      return `header :contains "${headerName}" ${formatStringArg(values)}`;
+      return `header :contains "${headerName}" "${escaped}"`;
     case 'not_contains':
-      return `not header :contains "${headerName}" ${formatStringArg(values)}`;
+      return `not header :contains "${headerName}" "${escaped}"`;
     case 'is':
-      return `header :is "${headerName}" ${formatStringArg(values)}`;
+      return `header :is "${headerName}" "${escaped}"`;
     case 'not_is':
-      return `not header :is "${headerName}" ${formatStringArg(values)}`;
+      return `not header :is "${headerName}" "${escaped}"`;
     case 'starts_with':
-      return `header :matches "${headerName}" ${formatStringArg(values, (v) => `${v}*`)}`;
+      return `header :matches "${headerName}" "${escaped}*"`;
     case 'ends_with':
-      return `header :matches "${headerName}" ${formatStringArg(values, (v) => `*${v}`)}`;
+      return `header :matches "${headerName}" "*${escaped}"`;
     case 'matches':
-      return `header :matches "${headerName}" ${formatStringArg(values)}`;
+      return `header :matches "${headerName}" "${escaped}"`;
     default:
-      return `header :contains "${headerName}" ${formatStringArg(values)}`;
+      return `header :contains "${headerName}" "${escaped}"`;
   }
 }
 
@@ -129,7 +89,6 @@ function computeRequires(rules: FilterRule[], vacation?: VacationSieveConfig): s
   for (const rule of enabledRules) {
     for (const condition of rule.conditions) {
       if (condition.field === 'body') extensions.add('body');
-      if (condition.field === 'attachment') extensions.add('mime');
     }
     for (const action of rule.actions) {
       switch (action.type) {

lib/sieve/parser.ts

@@ -36,11 +36,7 @@ const FIELD_FROM_HEADER: Record<string, FilterConditionField> = {
 function isValidCondition(c: unknown): boolean {
   if (!c || typeof c !== 'object') return false;
   const cond = c as Record<string, unknown>;
-  if (typeof cond.field !== 'string' || typeof cond.comparator !== 'string') return false;
-  // value may be a string OR a non-empty array of strings (Patch 11
-  // multi-value semantics). Accept both.
-  if (typeof cond.value === 'string') return true;
-  return Array.isArray(cond.value) && cond.value.every((v) => typeof v === 'string');
+  return typeof cond.field === 'string' && typeof cond.comparator === 'string' && typeof cond.value === 'string';
 }
 
 function isValidAction(a: unknown): boolean {
@@ -338,150 +334,43 @@ function parseAtom(raw: string): FilterCondition | null {
     }
   }
 
-  // Parse the value-tail of a header/body test: either a single quoted
-  // string or a Sieve list literal ["a", "b", ...]. Returns the unwrapped
-  // value(s), preserving the array shape when present so the caller can
-  // detect multi-value conditions.
-  const parseValueTail = (raw: string): string | string[] | null => {
-    const trimmed = raw.trim();
-    // List form
-    if (trimmed.startsWith('[') && trimmed.endsWith(']')) {
-      const inner = trimmed.slice(1, -1);
-      const items: string[] = [];
-      const re = /"((?:[^"\\]|\\.)*)"/g;
-      let mm: RegExpExecArray | null;
-      let cursor = 0;
-      while ((mm = re.exec(inner)) !== null) {
-        // Ensure only whitespace and commas appear between items
-        if (inner.slice(cursor, mm.index).replace(/[\s,]/g, '') !== '') return null;
-        items.push(unescapeSieveString(mm[1]));
-        cursor = mm.index + mm[0].length;
-      }
-      if (inner.slice(cursor).replace(/[\s,]/g, '') !== '') return null;
-      if (items.length === 0) return null;
-      return items.length === 1 ? items[0] : items;
-    }
-    // Single string form
-    const single = /^"((?:[^"\\]|\\.)*)"$/.exec(trimmed);
-    if (single) return unescapeSieveString(single[1]);
-    return null;
-  };
-
-  // Classify a :matches value (or values) into starts_with / ends_with /
-  // matches by inspecting wildcard positions. For multi-value, all items
-  // must share the same shape; otherwise we fall back to 'matches' and
-  // keep the wildcards verbatim.
-  const classifyMatches = (
-    values: string | string[],
-  ): { comparator: 'starts_with' | 'ends_with' | 'matches'; stripped: string | string[] } => {
-    const arr = Array.isArray(values) ? values : [values];
-    const isTrailing = (v: string) => {
-      const stars = [...v].filter((c) => c === '*').length;
-      return stars === 1 && v.endsWith('*');
-    };
-    const isLeading = (v: string) => {
-      const stars = [...v].filter((c) => c === '*').length;
-      return stars === 1 && v.startsWith('*');
-    };
-    if (arr.every(isTrailing)) {
-      const stripped = arr.map((v) => v.slice(0, -1));
-      return { comparator: 'starts_with', stripped: Array.isArray(values) ? stripped : stripped[0] };
-    }
-    if (arr.every(isLeading)) {
-      const stripped = arr.map((v) => v.slice(1));
-      return { comparator: 'ends_with', stripped: Array.isArray(values) ? stripped : stripped[0] };
-    }
-    return { comparator: 'matches', stripped: values };
-  };
-
-  // Match attachment-aware :mime :anychild tests before the generic header
-  // pattern - emitted by our own generator for field === 'attachment'.
-  // has_any: ":contains Content-Disposition attachment"
-  let m = /^header\s+:mime\s+:anychild\s+:contains\s+"Content-Disposition"\s+"attachment"$/.exec(s);
+  let m = /^header\s+:(contains|is|matches)\s+"((?:[^"\\]|\\.)*)"\s+"((?:[^"\\]|\\.)*)"$/.exec(s);
   if (m) {
-    return { field: 'attachment', comparator: 'has_any', value: '' };
-  }
-  // has_type: ":matches <headers> <value-tail>"
-  // - Current emit form uses a header-list ["Content-Disposition", "Content-Type"]
-  //   to catch senders who put the filename only in Content-Type's name= param
-  //   (Microsoft SMTPSVC, PrintToMail.net, etc.).
-  // - Legacy emit form used a single "Content-Disposition" header - still
-  //   recognised here so rules saved before the fix remain editable.
-  // Each value item must be a "*.<ext>*" wildcard pattern.
-  const tryHasType = (rawHeaders: string, rawValue: string): FilterCondition | null => {
-    // Header part: accept either a single quoted string or a 2-element list
-    // containing exactly Content-Disposition + Content-Type (in any order).
-    const single = /^"Content-Disposition"$/.exec(rawHeaders.trim());
-    const listForm = /^\[\s*((?:"(?:[^"\\]|\\.)*"\s*,?\s*)+)\]$/.exec(rawHeaders.trim());
-    let headersOk = false;
-    if (single) {
-      headersOk = true;
-    } else if (listForm) {
-      const inner = listForm[1];
-      const items: string[] = [];
-      const re = /"((?:[^"\\]|\\.)*)"/g;
-      let mm: RegExpExecArray | null;
-      while ((mm = re.exec(inner)) !== null) items.push(unescapeSieveString(mm[1]));
-      const expected = new Set(['Content-Disposition', 'Content-Type']);
-      const got = new Set(items);
-      headersOk =
-        items.length === expected.size &&
-        [...expected].every((h) => got.has(h));
-    }
-    if (!headersOk) return null;
-    const tail = parseValueTail(rawValue);
-    if (tail === null) return null;
-    const arr = Array.isArray(tail) ? tail : [tail];
-    const exts: string[] = [];
-    for (const item of arr) {
-      const em = /^\*\.((?:[^*\\]|\\.)+)\*$/.exec(item);
-      if (!em) return null;
-      exts.push(unescapeSieveString(em[1]));
-    }
-    return { field: 'attachment', comparator: 'has_type', value: exts.length === 1 ? exts[0] : exts };
-  };
-  m = /^header\s+:mime\s+:anychild\s+:matches\s+(\[[\s\S]+?\]|"[^"]+")\s+([\s\S]+)$/.exec(s);
-  if (m) {
-    const result = tryHasType(m[1], m[2]);
-    if (result) return result;
-  }
-  // Unknown :mime :anychild pattern (e.g. from external scripts) - bail to
-  // opaque rendering so we don't silently misrepresent the script.
-  if (/^header\s+:mime\s+:anychild\b/.test(s)) {
-    return null;
-  }
-
-  m = /^header\s+:(contains|is|matches)\s+"((?:[^"\\]|\\.)*)"\s+([\s\S]+)$/.exec(s);
-  if (m) {
-    const [, tag, headerName, rawTail] = m;
-    const value = parseValueTail(rawTail);
-    if (value === null) return null;
+    const [, tag, headerName, rawValue] = m;
+    const value = unescapeSieveString(rawValue);
     const { field, headerName: customHeaderName } = normalizeHeaderName(unescapeSieveString(headerName));
 
     let comparator: FilterComparator;
-    let finalValue: string | string[];
     if (tag === 'contains') {
       comparator = negated ? 'not_contains' : 'contains';
-      finalValue = value;
     } else if (tag === 'is') {
       comparator = negated ? 'not_is' : 'is';
-      finalValue = value;
     } else {
-      const classified = classifyMatches(value);
-      comparator = classified.comparator;
-      finalValue = classified.stripped;
+      // :matches - distinguish starts_with / ends_with / matches
+      const starPositions = [...value].reduce<number[]>((acc, ch, idx) => (ch === '*' ? [...acc, idx] : acc), []);
+      if (starPositions.length === 1 && starPositions[0] === value.length - 1) {
+        comparator = 'starts_with';
+        const cond: FilterCondition = { field, comparator, value: value.slice(0, -1) };
+        if (customHeaderName !== undefined) cond.headerName = customHeaderName;
+        return cond;
+      }
+      if (starPositions.length === 1 && starPositions[0] === 0) {
+        comparator = 'ends_with';
+        const cond: FilterCondition = { field, comparator, value: value.slice(1) };
+        if (customHeaderName !== undefined) cond.headerName = customHeaderName;
+        return cond;
+      }
+      comparator = 'matches';
     }
 
-    const cond: FilterCondition = { field, comparator, value: finalValue };
+    const cond: FilterCondition = { field, comparator, value };
     if (customHeaderName !== undefined) cond.headerName = customHeaderName;
     return cond;
   }
 
-  m = /^body\s+:(contains|is)\s+([\s\S]+)$/.exec(s);
+  m = /^body\s+:(contains|is)\s+"((?:[^"\\]|\\.)*)"$/.exec(s);
   if (m) {
-    const value = parseValueTail(m[2]);
-    if (value === null) return null;
-    return { field: 'body', comparator: m[1] === 'is' ? 'is' : 'contains', value };
+    return { field: 'body', comparator: m[1] === 'is' ? 'is' : 'contains', value: unescapeSieveString(m[2]) };
   }
 
   m = /^size\s+:(over|under)\s+(\d+)$/.exec(s);

lib/signature-utils.ts

@@ -124,35 +124,6 @@ export function appendPlainTextSignature(
   return `${body}${sep}${plainTextSignature}`;
 }
 
-/**
- * Append a signature to an HTML body, preserving rich formatting. Used by the
- * quick-reply path so an HTML signature keeps its markup instead of being
- * flattened to plain text. Mirrors the composer's send-time signature block
- * (`buildSignatureHtml` in email-composer.tsx).
- */
-export function appendHtmlSignature(
-  htmlBody: string,
-  signature?: SignatureSource | null,
-  options: { separator?: boolean } = {},
-): string {
-  const sep = options.separator === false ? '<br><br>' : '<br><br>-- <br>';
-
-  if (signature?.htmlSignature?.trim()) {
-    return `${htmlBody}${sep}${sanitizeSignatureHtml(signature.htmlSignature)}`;
-  }
-
-  if (signature?.textSignature?.trim()) {
-    const escaped = signature.textSignature
-      .replace(/&/g, '&amp;')
-      .replace(/</g, '&lt;')
-      .replace(/>/g, '&gt;')
-      .replace(/\n/g, '<br>');
-    return `${htmlBody}${sep}${escaped}`;
-  }
-
-  return htmlBody;
-}
-
 export function hasMeaningfulHtmlBody(html: string): boolean {
   if (!html.trim()) return false;
 

lib/subject-prefix.ts

@@ -1,119 +0,0 @@
-// Reply / forward subject prefix handling.
-//
-// Real-world email subjects accumulate prefixes across clients and languages:
-// "Re: AW: WG: Fwd: Re: foo". The deduplication regex needs to know ALL
-// commonly-used reply/forward markers - not just the current locale's, since
-// inbound messages may come from any locale. Failing to strip a foreign-locale
-// prefix means the user's locale prefix gets *added on top* and the subject
-// chain keeps growing.
-//
-// Sources: de-facto conventions in Outlook / Thunderbird / Apple Mail per
-// language. Includes a handful of legacy short-forms (R:, Fw:) that some
-// mobile clients still emit.
-
-const REPLY_TOKENS = [
-  "Re",      // English, Italian, French (also generic ISO)
-  "RE",      // Outlook variant
-  "AW",      // German (Antwort)
-  "Antw",    // German verbose
-  "Sv",      // Danish / Swedish / Norwegian (Svar)
-  "Yn",      // Turkish (Yanit)
-  "Yanit",   // Turkish verbose
-  "Odp",     // Polish (Odpowiedz)
-  "Ответ",   // Russian
-  "Resp",    // Spanish/Portuguese variant
-  "Vá",      // Hungarian
-  "回复",    // Chinese
-  "回覆",    // Chinese traditional
-  "답장",    // Korean
-  // NB: deliberately no bare "R" token — a single letter would strip the first
-  // word of legitimate subjects like "R: budget 2024". The full "Re" covers
-  // the common Italian/English case anyway.
-];
-
-const FORWARD_TOKENS = [
-  "Fwd",     // English standard
-  "Fw",      // English short / Polish / German short
-  "WG",      // German (Weitergeleitet)
-  "Tr",      // French (Transfert)
-  "Vs",      // Danish (Videresend)
-  "Enc",     // Portuguese (Encaminhar)
-  "ENC",     // Portuguese caps
-  "Rv",      // Spanish (Reenviar)
-  "RV",      // Spanish caps
-  "Rvf",     // Spanish variant
-  "Inol",    // Italian (Inoltro)
-  // NB: deliberately no bare "I" token — see the REPLY_TOKENS note above.
-  "PD",      // Polish (Przekazane Dalej)
-  "PR",      // Czech (Preposlat)
-  "İlt",     // Turkish (Ilet)
-  "Ilt",     // Turkish ASCII
-  "Пересл",  // Russian (Peresylka)
-  "Пер",     // Russian short
-  "转发",    // Chinese
-  "轉寄",    // Chinese traditional
-  "전달",    // Korean
-];
-
-// Match a single prefix token + optional [N] counter (Outlook) or *N (Eudora)
-// + colon + whitespace. Case-insensitive. The non-capturing groups keep the
-// regex composable for stripping multiple prefixes in a row.
-function buildPrefixRegex(tokens: string[]): RegExp {
-  // Escape regex specials in tokens (none currently, but be defensive)
-  const escaped = tokens.map((t) => t.replace(/[.*+?^${}()|[\]\\]/g, "\\$&"));
-  // Sort by length DESC so longer tokens (e.g. "Пересл") win over their
-  // shorter prefixes (e.g. "Пер") during alternation matching.
-  escaped.sort((a, b) => b.length - a.length);
-  return new RegExp(
-    `^\\s*(?:${escaped.join("|")})(?:\\[\\d+\\]|\\*\\d*)?\\s*:\\s*`,
-    "i",
-  );
-}
-
-const ANY_PREFIX_RE = buildPrefixRegex([...REPLY_TOKENS, ...FORWARD_TOKENS]);
-
-/**
- * Strip any leading sequence of reply/forward prefixes (across languages) from
- * a subject line. Idempotent and safe for empty input.
- *
- * Examples:
- *   stripSubjectPrefixes("Re: AW: WG: foo")        === "foo"
- *   stripSubjectPrefixes("Re[2]: foo")             === "foo"
- *   stripSubjectPrefixes("RE: Re: foo")            === "foo"
- *   stripSubjectPrefixes("foo")                    === "foo"
- *   stripSubjectPrefixes("")                       === ""
- */
-export function stripSubjectPrefixes(subject: string | undefined | null): string {
-  if (!subject) return "";
-  let s = subject;
-  // Bounded loop: in practice you never see more than ~10 prefixes; the bound
-  // protects against pathological input. Each iteration must consume input.
-  for (let i = 0; i < 20; i++) {
-    const next = s.replace(ANY_PREFIX_RE, "");
-    if (next === s) break;
-    s = next;
-  }
-  return s;
-}
-
-/**
- * Build a reply subject with the given locale-aware prefix. Strips any
- * pre-existing prefixes (in any language) first so chains don't accumulate.
- *
- *   buildReplySubject("AW: WG: foo", "Re:")   === "Re: foo"
- *   buildReplySubject("foo", "AW:")           === "AW: foo"
- *   buildReplySubject("", "AW:")              === "AW:"
- */
-export function buildReplySubject(subject: string | undefined | null, prefix: string): string {
-  const stripped = stripSubjectPrefixes(subject);
-  return stripped ? `${prefix} ${stripped}` : prefix;
-}
-
-/**
- * Build a forward subject. Same logic as buildReplySubject but conceptually
- * separate for clarity at the call site.
- */
-export function buildForwardSubject(subject: string | undefined | null, prefix: string): string {
-  const stripped = stripSubjectPrefixes(subject);
-  return stripped ? `${prefix} ${stripped}` : prefix;
-}