v0.3.3 PWA Support & Architectural Cleanup

Added

• Automatic Cache Busting:
  • Implemented versioning for the Service Worker (sw.js).
  • Implemented versioning for the LocalStorage data cache (data.js).
  • Added logic to automatically clear local browser cache if a version mismatch is detected, ensuring users always have the latest schema and assets.
• Progressive Web App (PWA) Support:
  • Added manifest.json for home screen installation and app configuration.
  • Implemented a Service Worker (sw.js) for static asset caching, improving load times and adding limited offline support.
  • Added iOS-specific meta tags and apple-touch-icon for a more native mobile experience.
  • Updated backend server to correctly serve PWA configuration files from the root directory.

Changed

• UI Simplification:
  • Replaced the complex header profile dropdown with a direct Instrument Selector.
  • Optimized Settings page layout, moving Appearance (Theme) settings to the top in a streamlined layout.
• Architectural Cleanup:
  • Removed the users table and all associated code for multiple profiles.
  • Migrated default_instrument_id and other preferences to a simplified settings table.
  • Cleaned up Export/Import logic to exclude old user profile data (name, email), ensuring a more private and streamlined single-user experience.

Fixed

• Instrument Selection Regressions:
  • Implemented the missing /api/settings backend endpoint for persistent settings updates.
  • Restored instrument highlighting on the Settings page by ensuring full user data is retrieved for comparison.
  • Corrected the display refresh logic on the Settings page after changing instruments.
• Dropdown Conflicts: Resolved a click event conflict in sessions.html that prevented the top-right user profile dropdown from opening.
• Menu Interactions: Improved the global click handler to respect multiple different dropdown mechanisms, ensuring smooth navigation and context menu usage.