fix: prefix hand-written URLs with basePath for subpath deployments

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

@@ -4,7 +4,7 @@ import { Suspense, useEffect, useState } from "react";
 import { useRouter, useSearchParams } from "next/navigation";
 import { useTranslations } from "next-intl";
 import { useAuthStore } from "@/stores/auth-store";
-import { getPathPrefix } from "@/lib/browser-navigation";
+import { apiFetch, getPathPrefix } from "@/lib/browser-navigation";
 import { Loader2, AlertCircle } from "lucide-react";
 import { Button } from "@/components/ui/button";
 import { useParams } from "next/navigation";
@@ -96,7 +96,7 @@ function OAuthCallbackInner() {
         // the refresh-token cookie write for the same reason.
         (async () => {
           try {
-            const res = await fetch("/api/auth/sso/complete", {
+            const res = await apiFetch("/api/auth/sso/complete", {
               method: "POST",
               headers: { "Content-Type": "application/json" },
               credentials: "include",

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

@@ -16,6 +16,7 @@ import { PaneSizeContext } from "@/hooks/use-pane-size";
 import { ProTabBar, PRO_TAB_DRAG_MIME } from "@/components/pro/pro-tab-bar";
 import { useProTabStore, type ProTab, type ProTabKind, type ProPaneId } from "@/stores/pro-tab-store";
 import { cn } from "@/lib/utils";
+import { getPathPrefix } from "@/lib/browser-navigation";
 
 import MailPage from "@/app/(main)/[locale]/page";
 import CalendarPage from "@/app/(main)/[locale]/calendar/page";
@@ -172,7 +173,7 @@ export default function ProHome() {
     // enabled it. If either precondition stops holding, hand the user back
     // to the standard shell.
     if (isMobile || isTablet || !proInterface) {
-      window.location.replace("/");
+      window.location.replace(`${getPathPrefix()}/`);
     }
   }, [initialCheckDone, isMobile, isTablet, proInterface]);