fix(anime): scope preferences, paginate sources, harden installs

- Preference store keys entries by extension package + bridge source id; legacy unscoped entries are discarded once instead of being handed to whichever extension asks first
- Source picker's "Load more" appends the next page without duplicating streamed results
- Repository index fetches and subtitle/APK downloads now time out and are size-bounded instead of hanging or growing unbounded
- APK installs are staged to a temp file and renamed into place
- Stream metadata lookup matches the requested path, not only the currently playing one
- Reworked animeui into browse-state/detail-panel/panels.css modules
- Reverted premature CHANGELOG unreleased entries; refreshed anime-browser docs

src/main/runtime/stream-playback-metadata.ts

@@ -41,6 +41,18 @@ export function createStreamPlaybackMetadataStore(): StreamPlaybackMetadataStore
   };
 }
 
+/**
+ * Match metadata for the path a caller requested, falling back to the active
+ * player path only when the caller has no path of its own.
+ */
+export function matchRequestedStreamPlaybackMetadata(
+  store: StreamPlaybackMetadataStore,
+  requestedMediaPath: string | null,
+  currentMediaPath: string | null,
+): AnimeStreamMetadata | null {
+  return store.match(requestedMediaPath ?? currentMediaPath);
+}
+
 /** AniList counts whole episodes, so a special numbered 6.5 cannot drive it. */
 function wholeEpisode(episode: number | null): number | null {
   return typeof episode === 'number' && Number.isInteger(episode) && episode > 0 ? episode : null;
@@ -52,11 +64,12 @@ function wholeEpisode(episode: number | null): number | null {
  * modals may search on them without waiting for the user to confirm.
  */
 export function toJimakuMediaInfo(metadata: AnimeStreamMetadata): JimakuMediaInfo {
+  const episode = wholeEpisode(metadata.episodeNumber);
   return {
     title: metadata.seriesTitle,
     season: metadata.seasonNumber,
-    episode: wholeEpisode(metadata.episodeNumber),
-    confidence: metadata.episodeNumber !== null ? 'high' : 'low',
+    episode,
+    confidence: episode !== null ? 'high' : 'low',
     filename: metadata.displayTitle,
     rawTitle: metadata.displayTitle,
   };