chore(release): 0.59.0 — R8 popover platform

VERSION

@@ -1 +1 @@
-0.58.1
+0.59.0

frontend/src/lib/releaseNotes.ts

@@ -14,6 +14,25 @@ export interface ReleaseEntry {
 }
 
 export const RELEASE_NOTES: ReleaseEntry[] = [
+  {
+    version: "0.59.0",
+    date: "2026-07-31",
+    summary:
+      "The menus, dropdowns and tooltips across the app are rebuilt on one system — with fuller keyboard and screen-reader support — and the player's Add to playlist and Download now work in fullscreen.",
+    features: [
+      "Player: Add to playlist and Download now work while the player is in fullscreen.",
+      "Channel page: for a channel you follow, your tags are now shown and editable right in the header, next to Subscribe.",
+    ],
+    fixes: [
+      "Menus and dropdowns now support full keyboard navigation — arrow keys, Home/End and type-to-jump — and return focus to where you were when they close.",
+      "Escape now closes only the menu or dialog on top, instead of also closing the player or window behind it.",
+      "Tooltips and hover cards are steadier and no longer linger or get in the way; the header language switcher now opens on click.",
+      "Channel tags stay on one line in the manager and reveal any that don't fit in a hover card, so the table no longer reflows as you add them.",
+    ],
+    chores: [
+      "Rebuilt the app's popovers, menus and tooltips on a single anchored-positioning system, replacing ~11 separate hand-written implementations.",
+    ],
+  },
   {
     version: "0.58.0",
     date: "2026-07-29",