chore(release): 0.17.0 — maintenance epic + messaging account-switch fix

VERSION

@@ -1 +1 @@
-0.16.2
+0.17.0

frontend/src/lib/releaseNotes.ts

@@ -14,6 +14,19 @@ export interface ReleaseEntry {
 }
 
 export const RELEASE_NOTES: ReleaseEntry[] = [
+  {
+    version: "0.17.0",
+    date: "2026-06-29",
+    summary: "Messaging and notification fixes, plus a large under-the-hood cleanup.",
+    fixes: [
+      "Switching between signed-in accounts no longer drops you on a blank chat: after you switch, a message you just received shows up in the right conversation instead of an empty screen.",
+      "You're now reliably notified when a video you'd saved or added to a playlist is removed because it's no longer available on YouTube — this notice could previously be missed.",
+      "“Time remaining” estimates (e.g. on sync progress) and a few small labels are now translated in Hungarian and German like the rest of the app.",
+    ],
+    chores: [
+      "A large internal code cleanup: removed duplicated logic across the backend and frontend and factored out shared building blocks (form controls, the save/discard bar, popovers, browser-storage helpers, time/date formatters). No change to how the app behaves — groundwork that keeps future features consistent and quicker to build.",
+    ],
+  },
   {
     version: "0.16.2",
     date: "2026-06-26",