Feature: Sound Notifications

[semanticdata]

Changed

• Simplified audio loading logic by removing complex local file path resolution.
• Updated all dependencies to latest versions.
• Replaced Settings Headings with proper setHeading() method for Obsidian plugin guidelines compliance.

Fixed

• Updated test mocks to support new setHeading() method.
• Corrected test expectations and setting indices after settings UI restructure.
• Fixed lint errors in sound manager.

Added

• New optional notification sound at the end of the timer.
  • Audio notifications load from CDN for improved reliability and cross-platform compatibility.
  • Option to use Custom URL or File instead of the default options.
• New Obsidian command to toggle Sound Notifications on and off.

Screenshots

Settings

[Sanctom]

Test report (macOS / Obsidian Desktop)
Environment
– Obsidian v1.9.10, macOS 12.7.6 (Intel MacPro)
– Node v22.18.0, npm 10.9.3, pnpm 10.15.0
– Branch: pr-6

What I tested
– End-of-timer sound (default/CDN).
– Sound toggle in Settings and via the new command.
– Custom URL and Local file playback.
– Settings headings via setHeading().
– pnpm build succeeded; tests passed locally.

Results
– ✅ All checks passed; feature behaves as expected.

From my perspective this resolves #5.
Thanks for implementing this — everything looks solid on my end.
Appreciate the work.