[Captain-Vikram]

Summary

• The volume popover in the music bar and the full music player closes after 2.8 seconds untouched. It stays open while the pointer is on it or keyboard focus is inside, then waits at least 1.5 seconds. Each volume change starts the count again. This uses the existing useToastTimer.
• Scrolling over the music volume button while the popover is closed shows the new level for a moment.
• The video player, the music bar and the full music player now share one volume pill (VolumeFeedbackPill) and one useVolumeFeedback hook, in place of three copies.
• The mini player's controls follow the full player's idle rule: while a video plays, the move handle, Expand and Close fade with the bottom controls after 2.4 seconds. They stay up while paused, loading or failed, and while the pointer rests on the buttons.

The ambient intensity wheel commit moved to #551.

Related issue

Closes #413

Change type

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

Validation

• pnpm test (387 files, 2294 tests, 0 failures)
• pnpm build (tsc and vite build pass)
• cargo fmt --manifest-path src-tauri/Cargo.toml --all -- --check
• cargo clippy --manifest-path src-tauri/Cargo.toml --all-targets --all-features
• cargo test --manifest-path src-tauri/Cargo.toml --all-targets --all-features
• I smoke-tested the affected desktop behavior.

No Rust files change. Tests cover the popover's close timing, hover hold and restart on a volume change, and the mini player buttons following the player's controls and holding under the pointer. Not run in the app yet.

Screenshots or recordings

Risk and compatibility

• No new secrets, private data, telemetry, or broad Tauri permissions were introduced.
• User-facing documentation was updated where needed.
• Dependency and lockfile changes are intentional and limited to this PR.
• Breaking changes and upgrade steps are clearly documented.

Frontend only. The mini player now hides its bottom controls and the cursor after 2.4 seconds of playback, as the full player does; before, they stayed up while the pointer was inside. No database, network or playback change.