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

docs-site/.vitepress/theme/status-line.test.ts

@@ -10,5 +10,7 @@ test('status line file path formats version archive home without trailing slash'
 });
 
 test('status line file path keeps normal docs routes as markdown files', () => {
-  expect(formatStatusLineFilePath('/v/0.12.0/configuration')).toBe('v/0.12.0/configuration.md');
+  expect(formatStatusLineFilePath('/v/0.12.0/configuration')).toBe(
+    'v/0.12.0/configuration.md',
+  );
 });