Fix player track selection handling

[Copilot]

Summary

Player track selection could target the wrong stream because UI/ViewModel state only carried Format, losing the Media3 group/index identity. Clearing selected tracks also disabled entire audio/video track types instead of restoring automatic selection.

• Preserve TrackGroup + index in the track selection model.
• Route UI selections through exact Media3 track identity.
• Make clear-track behavior safe:
  • subtitles: clear and disable text tracks
  • audio/video: clear override and keep track type enabled
• Localize track type labels and improve unknown/partial format display fallbacks.
• Fix the track bottom sheet compile error caused by the renamed tracks parameter.

AI Agent Checklist

Before submitting this PR, confirm:

• I identified the task type.
• I read the root AGENTS.md.
• I read all relevant directory-level AGENTS.md files.
• I avoided unrelated refactors.
• I respected module dependency boundaries.
• I did not move low-level data access into UI.
• I did not introduce unnecessary dependencies.
• I ran the smallest relevant validation command.
• I documented any validation that could not be run.
• I listed risks or compatibility concerns.

Instructions Read

List the instruction files read for this change:

• AGENTS.md
• app/AGENTS.md
• app/tv/AGENTS.md
• business/AGENTS.md
• data/AGENTS.md
• i18n/AGENTS.md
• docs/ai/playbooks/playback-pipeline.md
• docs/ai/VALIDATION_MATRIX.md

Validation

Commands run:

git diff --check
./gradlew cleanManagedDevices --unused-only :app:smartphone:assembleRelease :app:tv:assembleRelease

Results:

git diff --check: passed

./gradlew cleanManagedDevices --unused-only :app:smartphone:assembleRelease :app:tv:assembleRelease: passed

GitHub Android CI run 26443663778: passed

CodeQL: no code changes detected for languages that CodeQL can analyze, so no analysis was performed.

Commands not run:

None

Reason:

All requested full compile validation was run successfully after initializing required submodules.

Risk Notes

Mention any risk areas:

• API compatibility: PlayerManager.tracks/currentTracks now expose PlayerTrack instead of raw Format.
• Database migration: none.
• Playback behavior: audio/video clear now restores automatic selection instead of disabling the track type.
• TV focus behavior: none; TV UI unchanged.
• Resource/i18n behavior: added default and zh-CN strings for track labels/fallback.
• Performance: no expected impact.
• Binary size: negligible resource-only increase.

[oxyroid]

@copilot 修复 CI 问题，你必须要经过完整编译验证，如果 GitHub Cloud Agent 环境有问题让你无法访问 submodules，请跟我说如何给你配置

[Copilot]

@copilot 修复 CI 问题，你必须要经过完整编译验证，如果 GitHub Cloud Agent 环境有问题让你无法访问 submodules，请跟我说如何给你配置

已修复，提交 3e126ef。我用 GitHub Actions 日志定位到 CI 实际失败是 FormatsBottomSheet.kt 中遗漏的 formats.size 引用，不是 submodule 权限问题；本地初始化 submodules 后已完整验证 ./gradlew cleanManagedDevices --unused-only :app:smartphone:assembleRelease :app:tv:assembleRelease 通过，新的 Android CI run 26443663778 也已通过。Cloud Agent 如需预先配置 submodules，可在 .github/workflows/copilot-setup-steps.yml 中使用 actions/checkout 并设置 submodules: recursive。