CRITICAL fixes:
- #14: Render source image on canvas via Konva Image + use-image hook
- #3: Wire move tool handlers (onClick, onDragEnd, onTransformEnd, draggable)
to all CanvasObjectRenderer shapes
- #4: Implement image object rendering for fill/gradient output
- #2: Show fallback text in histogram panel when no imageData provided
- #1: Forward all args in zundo handleSet debounce wrapper
HIGH fixes:
- #5: Track raw screen cursor position for brush overlay instead of
using canvas-space coordinates
- #6: Export dialog uses Konva stage.toDataURL via module-level ref
instead of DOM querySelector for correct export at any zoom/pan
- #7: Add _historyVersion increment to setAdjustment, resetAdjustments,
toggleFilter, and setFilterParam for undo tracking
- #8: Include lastAction in partialize so history labels display correctly
MEDIUM fixes:
- #10: Move useEditorShortcuts from EditorCanvas to EditorPage with
save/export callbacks
- #11: Remove _historyVersion increment from updateObject to prevent
brush strokes from flooding undo history
- #12: Apply Konva filters (Brighten, Contrast, HSL, Blur, Grayscale,
Sepia, Invert, Pixelate, Emboss, Posterize, Noise, Solarize,
Threshold, Kaleidoscope) to source image node based on store state
Implement Agent 7 features for the image editor:
- History panel with undo/redo list, action icons, and state jumping
- 51+ keyboard shortcuts via react-hotkeys-hook (tools, modifiers, clipboard)
- Export dialog with PNG/JPEG/WebP format, quality, resize, clipboard copy
- Navigator minimap with viewport rectangle, drag-to-pan, zoom slider
- Autosave/recovery system with localStorage and recovery banner
- Project save/load (.snapotter JSON format)
- Unsaved changes warning via beforeunload
- Paste from system clipboard support
Implements the layer management panel for the image editor (Features 16, 40):
- Blend mode dropdown (16 modes) and opacity slider for active layer
- Layer list with visibility/lock toggles, thumbnails, and inline rename
- Pointer-based drag reorder (not HTML5 drag API)
- Right-click context menu: Duplicate, Merge Down, Flatten All, Delete
- Layer effects section: Drop Shadow, Inner Shadow, Outer Glow, Stroke
- Each effect with enable/disable toggle and full parameter controls
- Wired into EditorRightPanel as the "Layers" tab content
SnapOtter