- Integrated Unsplash API for image search functionality with environment configuration
- Added new Nimbus Editor page component with navigation from sidebar and mobile drawer
- Enhanced TOC with highlight animation for editor heading navigation
- Improved CDK overlay z-index hierarchy for proper menu layering
- Removed obsolete logging validation script
- 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
