- Added UrlStateService to sync app state with URL parameters for note selection, tags, folders, and search
- Implemented URL state effects in AppComponent to handle navigation from URL parameters
- Updated sidebar and layout components to reflect URL state changes in UI
- Added URL state updates when navigating via note selection, tag clicks, and search
- Modified note sharing to use URL parameters instead of route paths
- Added auto-opening of relevant
- Added PATCH endpoint for updating note frontmatter with YAML parsing and merging
- Added DELETE endpoint to move notes to .trash directory with timestamped filenames
- Implemented note context menu with actions like duplicate, share, favorite, and delete
- Added color picker to context menu with gradient background visualization
- Extended NoteFrontmatter type with readOnly and color properties
- Added YAML frontmatter parser with support
