fix(web): preserve per-row aria-labels through RowActionsMenu + test fixes

CI vitest run on 3f8a2c5 surfaced 17 failures across 5 test files; this
commit addresses 15 that are this batch's responsibility.

1. RowActionsMenu now accepts ariaLabel on RowAction. Defaults to label.
   Admin pages (requests/quarantine/users) pass per-row aria-labels
   matching the pre-batch buttons ("Approve Geogaddi", "Resolve Roygbiv",
   "Make alice admin", etc.) so screen readers + tests find them.

2. PlayerBar.test.ts — anchored regex /^(play|pause)$/i so the new
   "Player options" overflow ⋮ doesn't also match /play|pause/i.

3. MobileNavDrawer.test.ts — added vi.mock for $app/state, $app/navigation,
   and $lib/auth/store.svelte (mirrors Shell.test.ts pattern). Without
   these, SvelteKit's notifiable_store helper isn't bootstrapped in
   vitest and the suite fails to load.

The 2 remaining vitest failures are in /admin/integrations Save flow
(putLidarrConfig spy not called). Untouched by this batch and the
recent "Save runs Test first" refactor (bca8622) appears related —
flagging for operator verification, not chasing as a regression.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

web/src/routes/admin/quarantine/+page.svelte

@@ -181,10 +181,26 @@
       {#each rows as r (r.track_id)}
         {@const isExpanded = !!expanded[r.track_id]}
         {@const lidarrDisabled = !r.lidarr_album_mbid}
-        {@const primary: RowAction = { icon: RotateCcw, label: 'Resolve', onclick: () => onResolve(r) }}
+        {@const primary: RowAction = {
+          icon: RotateCcw,
+          label: 'Resolve',
+          ariaLabel: `Resolve ${r.track_title}`,
+          onclick: () => onResolve(r)
+        }}
         {@const secondary: RowAction[] = [
-          { icon: Play, label: 'Play', onclick: () => onPlay(r) },
-          { icon: Trash2, label: 'Delete file', onclick: () => openDeleteFile(r), danger: true }
+          {
+            icon: Play,
+            label: 'Play',
+            ariaLabel: `Play ${r.track_title}`,
+            onclick: () => onPlay(r)
+          },
+          {
+            icon: Trash2,
+            label: 'Delete file',
+            ariaLabel: `Delete file for ${r.track_title}`,
+            onclick: () => openDeleteFile(r),
+            danger: true
+          }
         ]}
         <li
           class="flex items-start gap-4 p-3"