[A-EDev]

Summary

• Music search keeps songs, videos, artists, albums and playlists when YouTube sends a shorter result page without playlistItemData or play overlays.
• Music search shows every filter YouTube Music offers for the query, in its order: adds Artists, Featured playlists, Podcasts, Episodes and Profiles. Episodes play like songs, podcasts open as a playlist, profiles open on their channel page.
• Filtered results are read from any section, and a new query or filter cancels the previous request.
• A song or video refused by country, rate limit or membership is no longer called removed: it shows its own message ("Not available in your region" and two new lines). Music playback stops after 3 songs in a row that cannot play here, or one full pass of the queue, instead of skipping forever.
• On-device lyrics romanization detects Japanese per song and no longer shows Chinese readings for kanji; the lyrics menu says it is not available for Japanese. Romanized text gets a space before Latin words.
• Closing the picture-in-picture window pauses the video and keeps it open, the same as leaving the app. Shorts still stop playing ([Bug]: When I close a Shorts PiP, the audio from the Shorts continues until the end #1152).

Related issue

Closes #1379
Closes #1378
Closes #1352
Closes #1349

Change type

• Bug fix
• Feature
• Refactor or maintenance
• Build, packaging, or CI
• Documentation

Validation

• ./gradlew :app:assembleGithubDebug
• ./gradlew :app:testGithubDebugUnitTest (4,300 tests, 0 failures)
• I ran any additional flavor-specific build or test tasks affected by this change. (:app:compileFossDebugKotlin, ktlintCheck, nightly_notes.py --check)
• I manually tested the affected behavior on an Android device or emulator.

Test device and Android version: Xiaomi 2311DRK48G, Android 16 (API 36)

Screenshots or recordings

Risk and compatibility

• The change does not introduce secrets, private data, or unexpected telemetry.
• New user-facing text uses Android string resources.
• Dependency and lockfile changes are intentional and limited to this PR.
• Room schema changes include the required version bump and migration, or this PR does not change the Room schema.
• Breaking changes and upgrade steps are clearly documented.

The refusal check is shared by music and video playback, so a region-blocked video now shows the region error instead of being skipped as removed. The PiP change only replaces the body of the dismiss job in MainActivity; entering PiP, auto-enter and expanding back are unchanged.

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