In the dark theme --color-border was #262626, identical to --color-secondary/--color-muted. The global `* { border-color: var(--color-border) }` rule therefore rendered borders invisible on those surfaces - e.g. the folder sidebar's right border and the account header's bottom border vanished in dark mode.
Set --color-border to rgba(128, 128, 128, 0.3) (the same neutral the navigation rail already uses inline) so borders stay visible and consistent across all dark surfaces (background, secondary, card, popover).
The collapsed sidebar wrapper was hard-coded to 64px while the sidebar itself is w-12 (48px), leaving a 16px empty strip on its right edge. Match the wrapper to the sidebar's own width.
The folder and tag section gears in the sidebar deep-linked into Settings by writing the persisted `settings-active-tab` localStorage key, so the chosen section became the permanent default the main Settings button opened on - indefinitely.
Compounding it, the desktop Settings tab list called setActiveTab directly without persisting, so normal navigation never updated the default and the hijacked value could never self-correct.
Fix: section gears now write a one-shot sessionStorage key that is consumed on mount (transient deep-link, no persistence); desktop tab clicks go through handleTabSelect like the mobile list, so the last-used tab is saved consistently. Stale/removed tab IDs are still caught by the existing effectiveActiveTab fallback.
Clicking an attachment chip in the composer now opens the same FilePreviewModal
the message viewer uses, instead of offering only download/remove. The chip
becomes clickable once the attachment has content (a local File, or an uploaded
blob for forwarded attachments) and the type is previewable.
- getFileContent prefers the in-memory File (no network round-trip) and falls
back to composerClient.fetchBlob for forwarded attachments (blobId only).
- Previewability (isFilePreviewable) and the open-in-new-tab safety gate are
handled inside the modal, so this adds no new egress/attack surface; the local
download path uses an <a download> (forces a save, never executes).
- No new dependencies and no new locale keys.
Clicking an embedded email attachment (bounce/DSN, forward-as-attachment, ...)
opened only a download. Add an 'eml' preview kind: FilePreviewModal parses the
blob with postal-mime (dynamic-imported, off the bundle) and renders it via a
new EmlPreview component - header (from/to/subject/date) + body + the message's
own attachments.
The body is sanitized with DOMPurify (sanitizeEmailHtmlForIframe) AND rendered
in a fully-locked sandbox iframe (sandbox="" - no scripts, no same-origin), so a
script-bearing .eml can never execute in-origin. Reuses the email_viewer locale
namespace (no new keys).
Some emails (Outlook / templated HTML) set `html, body { height: 100% }` in
their own <style>. Combined with the viewer srcDoc's `overflow: hidden` and the
scrollHeight-based iframe auto-resize, the measured height collapses to the
iframe's initial size, so everything below the first screenful (often just the
header/logo) is clipped and the rest of the message is invisible.
Force `height: auto !important` on html/body in the rendered srcDoc so the
document grows to its real content height before scrollHeight is measured.
Linus Rath