feat(overlay): add subtitle selection modal and Jellyfin 12 fixes

- Add an optional subtitle selection modal for primary/secondary mpv tracks (subtitleSelection.enabled, g-s sequence shortcut) with key-sequence conflict handling
- Authenticate Jellyfin URLs with the ApiKey query, answer remote keep-alives, clear now-playing on stop, and restore episode titles in Anki misc info
- Honor the configured mpv executable when Jellyfin starts playback via a shared mpv-process launcher
- Bump electron-builder to 26.16.1
- Condense and reconcile changelog fragments; update config example and docs

src/anki-integration.ts

@@ -185,7 +185,7 @@ function extractFilenameFromMediaPath(rawPath: string): string {
 function shouldPreferMediaTitleForMiscInfo(rawPath: string, filename: string): boolean {
   const loweredPath = rawPath.toLowerCase();
   const loweredFilename = filename.toLowerCase();
-  if (loweredPath.includes('api_key=')) {
+  if (loweredPath.includes('api_key=') || loweredPath.includes('apikey=')) {
     return true;
   }
   if (loweredPath.startsWith('http://') || loweredPath.startsWith('https://')) {