Android:
- Fix stale wake lock detection by checking isHeld() before reacquiring
- Wrap startForegroundService in try-catch to handle launch exceptions
- Add START/STOP intent actions to prevent stop/start race condition
HTML/Accessibility:
- Convert preset and preamp spans to proper <label> elements
- Add aria-controls to database collapse button
- Sync aria-expanded state when toggling database panel
JavaScript:
- Guard auto-resume with source check to avoid resuming when not playing
- Add _calculateQ() fallback in fast-path EQ filter updates
- Persist graphic EQ gains and preamp to storage from setters
- Include 'legacy' in EQ mode restoration check
- Clear container before rebuilding GEQ bands for idempotency
- Use AbortController for document-level listener cleanup
- Apply gain calculation for non-parametric modes in touch snap
- Validate stored GEQ values are finite numbers
CSS:
- Remove non-standard appearance: slider-vertical property
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