- Fix decorator parameter order issues with @with_session
- Return JSON responses instead of HTML fragments
- Add proper error handling with JSON error responses
- Fix route parameter conflicts in delete and update endpoints
- Add drag-and-drop to reorder presets in tabs (2D grid layout)
- Add drag-and-drop to reorder colors within presets
- Add max_colors field to pattern definitions
- Hide color section when max_colors is 0
- Validate color count against pattern max_colors limit
- Store presets in 2D grid format (3 columns)
- Remove left panel from tab content, show only presets
- Update color palette to show swatches instead of hex codes
- Improve preset editor UI with visual color swatches
- Add REST API controllers for all models
- Controllers use Microdot subroutes
- Support CRUD operations via HTTP endpoints
- Controllers: preset, profile, group, sequence, tab, palette
