fix: review round 1 — row press after a rename, related reset, dead items on removal, honest Prev/Next

- A press that begins while a field in the row is edited only ends the editing (rowOpen latches it
  at pointerdown); the card layout's row press is now tested.
- A related video reset in the player forgets the session's stored position.
- Removing the playing video passes over known-dead items and steps the way it went.
- Prev/Next off only because of dead items stay focusable and say why (HU/EN).
- The docked bar's scroller leaves room for focus rings.
- A focus-opened About card is not closed by its own scroll into view.
- EN "Clear watch progress" for the video reset, distinct from a page's "Reset view".
- The signed-out title read goes to the page yt-dlp read; the retitle writes are conditional.
- Tests: the cap of three errors, the bar's own Fullscreen, the group glyph, the backfill's reads.

frontend/src/features/player/RelatedVideos.tsx

@@ -54,12 +54,15 @@ export function RelatedVideos({
   videoId,
   onPlay,
   onWrite,
+  onReset,
 }: {
   videoId: string;
   /** `startAt` null resumes the video where it was left; a number (Restart's 0) starts there. */
   onPlay: (v: Video, startAt: number | null) => void;
   /** Each write this list makes, for the host's player session (see PlayerModal `onWrite`). */
   onWrite?: (write: Promise<unknown>) => void;
+  /** A video's view was reset from its row: the host forgets where its session left it. */
+  onReset?: (id: string) => void;
 }) {
   const { t } = useTranslation();
   const qc = useQueryClient();
@@ -107,6 +110,7 @@ export function RelatedVideos({
   };
 
   const onResetState = (id: string) => {
+    onReset?.(id);
     const seq = begin(id, { status: "new", position_seconds: 0 });
     const write = resetVideoState(qc, id);
     onWrite?.(write);