- Implemented multi-selection for notes with Ctrl+click, long-press, and keyboard shortcuts (Ctrl+A, Escape)
- Added Gemini API integration with environment configuration and routes
- Enhanced code block UI with improved copy feedback animation and visual polish
- Added sort order toggle (asc/desc) for note lists with persistent state
- Updated markdown editor with modern toolbar design and improved visual hierarchy
- Added auto-save indicator and note color support in editor header
- Redesigned note list cards with hover effects and quick action buttons
- Added version, build date and copyright info to about panel
- Enhanced scrollbar styling and padding in editor container
- Improved responsive layout and dark mode support across components
