diff --git a/IMPLEMENTATION_PLAN.md b/IMPLEMENTATION_PLAN.md
index 76400f3..3ca7508 100644
--- a/IMPLEMENTATION_PLAN.md
+++ b/IMPLEMENTATION_PLAN.md
@@ -1,5 +1,34 @@
 # Paint UI - Implementation Plan
 
+## 📊 Current Status
+
+**Progress**: Phases 1-10 Complete (83% of MVP features) ✅
+
+### ✅ Completed Features
+- **Core Foundation**: Next.js 16, React 19, TypeScript, Tailwind CSS 4
+- **Canvas Engine**: Multi-layer system with zoom/pan, rulers, blend modes
+- **Undo/Redo**: Command pattern with full history support
+- **Drawing Tools**: Pencil, Brush (with flow/hardness), Eraser, Fill, Eyedropper
+- **Selection Tools**: Rectangle, Ellipse, Lasso, Magic Wand with full operations
+- **Transform Tools**: Move, Free Transform, Rotate, Scale, Skew
+- **Shape Tools**: Rectangle, Ellipse, Line, Arrow, Polygon, Star, Triangle
+- **Color System**: HSV picker, swatches, history, color adjustments
+- **File Operations**: Open (drag/drop/paste), Export (PNG/JPG/WEBP), Project files
+- **Effects & Filters**: 15+ filters (Blur, Sharpen, Color adjustments, Artistic effects)
+- **UI/UX**: Professional layout, Theme toggle, State persistence, Custom scrollbars
+
+### 🚧 In Progress / TODO
+- **Text Tool** (Phase 11)
+- **Advanced Brush Tools** (Clone Stamp, Healing Brush, Smudge)
+- **Performance Optimizations** (Web Workers, Code splitting, Lazy loading)
+- **Accessibility** (ARIA labels, Screen reader support)
+- **Testing & Documentation** (Phase 12)
+
+### 📅 Last Updated
+November 21, 2025 - Fixed fill tool undo/redo functionality
+
+---
+
 ## Project Overview
 
 **paint-ui** is a modern browser-based image editor built with Next.js 16 and Tailwind CSS 4, inspired by miniPaint. This is a ground-up rebuild focusing on modern web technologies while preserving the powerful canvas manipulation capabilities.
@@ -150,34 +179,34 @@ paint-ui/
 
 ## Implementation Phases
 
-### Phase 1: Project Foundation (Week 1)
+### Phase 1: Project Foundation (Week 1) ✅ COMPLETE
 
 **Goals**: Set up development environment and basic project structure
 
 #### Tasks:
 1. **Project Initialization**
    - [x] Create git repository
-   - [ ] Initialize Next.js 16 with TypeScript
-   - [ ] Configure Tailwind CSS 4
-   - [ ] Set up ESLint + Prettier
-   - [ ] Configure path aliases (@/ prefix)
+   - [x] Initialize Next.js 16 with TypeScript
+   - [x] Configure Tailwind CSS 4
+   - [x] Set up ESLint + Prettier
+   - [x] Configure path aliases (@/ prefix)
 
 2. **Core Dependencies**
-   - [ ] Install Radix UI / Shadcn components
-   - [ ] Install Zustand for state management
-   - [ ] Install canvas utilities (pica, file-saver, etc.)
-   - [ ] Set up Storybook (optional, for component development)
+   - [x] Install Radix UI / Shadcn components
+   - [x] Install Zustand for state management
+   - [x] Install canvas utilities (pica, file-saver, etc.)
+   - [ ] Set up Storybook (optional, for component development) - SKIPPED
 
 3. **Basic Layout**
-   - [ ] Create root layout with header/sidebar structure
-   - [ ] Implement responsive grid layout
-   - [ ] Add dark/light theme toggle
-   - [ ] Set up global CSS and Tailwind theme
+   - [x] Create root layout with header/sidebar structure
+   - [x] Implement responsive grid layout
+   - [x] Add dark/light theme toggle
+   - [x] Set up global CSS and Tailwind theme
 
 4. **TypeScript Types**
-   - [ ] Define core types (Layer, Canvas, Tool, Effect)
-   - [ ] Create type definitions for canvas state
-   - [ ] Set up strict TypeScript config
+   - [x] Define core types (Layer, Canvas, Tool, Effect)
+   - [x] Create type definitions for canvas state
+   - [x] Set up strict TypeScript config
 
 **Deliverables**:
 - ✅ Working Next.js dev server
@@ -187,36 +216,36 @@ paint-ui/
 
 ---
 
-### Phase 2: Core Canvas Engine (Week 2-3)
+### Phase 2: Core Canvas Engine (Week 2-3) ✅ COMPLETE
 
 **Goals**: Build the fundamental canvas rendering and layer system
 
 #### Tasks:
 1. **Canvas Manager**
-   - [ ] Create CanvasWrapper component with refs
-   - [ ] Implement canvas initialization
-   - [ ] Add zoom/pan functionality
-   - [ ] Implement rulers and grid overlay
-   - [ ] Handle canvas resize events
+   - [x] Create CanvasWrapper component with refs
+   - [x] Implement canvas initialization
+   - [x] Add zoom/pan functionality
+   - [x] Implement rulers and grid overlay
+   - [x] Handle canvas resize events
 
 2. **Layer System**
-   - [ ] Define Layer interface (id, name, visible, opacity, blendMode)
-   - [ ] Create LayerManager class
-   - [ ] Implement layer CRUD operations
-   - [ ] Add layer ordering (move up/down)
-   - [ ] Implement layer merging/flattening
+   - [x] Define Layer interface (id, name, visible, opacity, blendMode)
+   - [x] Create LayerManager class
+   - [x] Implement layer CRUD operations
+   - [x] Add layer ordering (move up/down)
+   - [x] Implement layer merging/flattening
 
 3. **State Management**
-   - [ ] Set up canvas-store (dimensions, zoom, offset)
-   - [ ] Set up layer-store (layers array, active layer)
-   - [ ] Create selectors for derived state
-   - [ ] Add state persistence (localStorage)
+   - [x] Set up canvas-store (dimensions, zoom, offset)
+   - [x] Set up layer-store (layers array, active layer)
+   - [x] Create selectors for derived state
+   - [x] Add state persistence (localStorage) - via Zustand persist
 
 4. **Rendering Pipeline**
-   - [ ] Implement composite rendering (all layers → main canvas)
-   - [ ] Add blend mode support
-   - [ ] Optimize rendering with dirty rectangles
-   - [ ] Implement preview rendering
+   - [x] Implement composite rendering (all layers → main canvas)
+   - [x] Add blend mode support
+   - [ ] Optimize rendering with dirty rectangles - TODO: Performance optimization
+   - [x] Implement preview rendering
 
 **Deliverables**:
 - ✅ Canvas displays correctly
@@ -226,28 +255,31 @@ paint-ui/
 
 ---
 
-### Phase 3: History & Undo System (Week 3-4)
+### Phase 3: History & Undo System (Week 3-4) ✅ COMPLETE
 
 **Goals**: Implement robust undo/redo functionality
 
 #### Tasks:
 1. **History Manager**
-   - [ ] Design history state structure (snapshots vs commands)
-   - [ ] Implement undo/redo stack
-   - [ ] Add history limits (max 50 states)
-   - [ ] Create history middleware for Zustand
+   - [x] Design history state structure (snapshots vs commands) - Command pattern
+   - [x] Implement undo/redo stack
+   - [x] Add history limits (max 50 states)
+   - [x] Create history middleware for Zustand
 
 2. **Command Pattern**
-   - [ ] Create abstract Command class
-   - [ ] Implement layer commands (Add, Delete, Modify)
-   - [ ] Implement drawing commands (Paint, Erase, Fill)
-   - [ ] Add command batching for performance
+   - [x] Create abstract Command class (BaseCommand)
+   - [x] Implement layer commands (Add, Delete, Modify)
+   - [x] Implement drawing commands (Paint, Erase, Fill) - DrawCommand
+   - [x] Implement move commands - MoveCommand
+   - [x] Implement transform commands - TransformCommand
+   - [x] Implement filter commands - FilterCommand
+   - [ ] Add command batching for performance - TODO: Future optimization
 
 3. **Keyboard Shortcuts**
-   - [ ] Implement Ctrl+Z (undo)
-   - [ ] Implement Ctrl+Shift+Z (redo)
-   - [ ] Add keyboard shortcut manager
-   - [ ] Create shortcuts config file
+   - [x] Implement Ctrl+Z (undo)
+   - [x] Implement Ctrl+Shift+Z (redo)
+   - [x] Add keyboard shortcut manager
+   - [x] Create shortcuts config file
 
 **Deliverables**:
 - ✅ Undo/redo works for all operations
@@ -256,35 +288,36 @@ paint-ui/
 
 ---
 
-### Phase 4: Basic Drawing Tools (Week 4-6)
+### Phase 4: Basic Drawing Tools (Week 4-6) ✅ COMPLETE
 
 **Goals**: Implement fundamental drawing capabilities
 
 #### Tasks:
 1. **Tool Architecture**
-   - [ ] Create BaseTool abstract class
-   - [ ] Define tool lifecycle (activate, deactivate, mouseDown, mouseMove, mouseUp)
-   - [ ] Implement tool cursor management
-   - [ ] Add tool settings panel
+   - [x] Create BaseTool abstract class
+   - [x] Define tool lifecycle (activate, deactivate, mouseDown, mouseMove, mouseUp)
+   - [x] Implement tool cursor management
+   - [x] Add tool settings panel (tool-options bar)
 
 2. **Core Tools**
-   - [ ] **Pencil Tool** - Basic 1px drawing
-   - [ ] **Brush Tool** - Variable size/opacity/hardness
-   - [ ] **Eraser Tool** - Remove pixels
-   - [ ] **Fill Tool** - Flood fill algorithm
-   - [ ] **Eyedropper Tool** - Color picker from canvas
+   - [x] **Pencil Tool** - Basic 1px drawing
+   - [x] **Brush Tool** - Variable size/opacity/hardness/flow
+   - [x] **Eraser Tool** - Remove pixels
+   - [x] **Fill Tool** - Flood fill algorithm with color/opacity
+   - [x] **Eyedropper Tool** - Color picker from canvas
 
 3. **Selection Tools**
-   - [ ] **Rectangle Select** - Rectangular selection
-   - [ ] **Ellipse Select** - Circular selection
-   - [ ] **Lasso Select** - Freehand selection
-   - [ ] Selection operations (move, cut, copy, paste)
+   - [x] **Rectangle Select** - Rectangular selection
+   - [x] **Ellipse Select** - Circular selection
+   - [x] **Lasso Select** - Freehand selection
+   - [x] **Magic Wand** - Color-based selection
+   - [x] Selection operations (move, cut, copy, paste, fill, stroke, delete)
 
 4. **Tool UI**
-   - [ ] Tool palette sidebar
-   - [ ] Tool-specific settings panel
-   - [ ] Brush preview
-   - [ ] Size/opacity sliders
+   - [x] Tool palette sidebar
+   - [x] Tool-specific settings panel
+   - [x] Brush preview
+   - [x] Size/opacity/hardness/flow sliders
 
 **Deliverables**:
 - ✅ Can draw with pencil/brush
@@ -294,22 +327,24 @@ paint-ui/
 
 ---
 
-### Phase 5: Color System (Week 6-7)
+### Phase 5: Color System (Week 6-7) ✅ COMPLETE
 
 **Goals**: Comprehensive color management
 
 #### Tasks:
 1. **Color Picker**
-   - [ ] HSV color wheel component
-   - [ ] RGB/HSL/Hex input fields
-   - [ ] Color history/swatches
-   - [ ] Eyedropper integration
+   - [x] HSV color wheel component
+   - [x] RGB/HSL/Hex input fields
+   - [x] Color history/swatches
+   - [x] Eyedropper integration
+   - [x] Alpha/opacity control
 
 2. **Color Management**
-   - [ ] Primary/secondary color state
-   - [ ] Color palette presets
-   - [ ] Recent colors storage
-   - [ ] Color conversion utilities
+   - [x] Primary/secondary color state
+   - [x] Color palette presets
+   - [x] Recent colors storage
+   - [x] Color conversion utilities
+   - [x] Color adjustments (Hue/Saturation/Lightness/Brightness)
 
 **Deliverables**:
 - ✅ Functional color picker
@@ -318,33 +353,33 @@ paint-ui/
 
 ---
 
-### Phase 6: File Operations (Week 7-8)
+### Phase 6: File Operations (Week 7-8) ✅ COMPLETE
 
 **Goals**: Import/export image files
 
 #### Tasks:
 1. **File Opening**
-   - [ ] Drag & drop support
-   - [ ] File input dialog
-   - [ ] Clipboard paste (Ctrl+V)
-   - [ ] URL loading
-   - [ ] Multiple file formats (PNG, JPG, WEBP, GIF)
+   - [x] Drag & drop support
+   - [x] File input dialog
+   - [x] Clipboard paste (Ctrl+V)
+   - [ ] URL loading - TODO: Future enhancement
+   - [x] Multiple file formats (PNG, JPG, WEBP, GIF)
 
 2. **File Saving**
-   - [ ] Export as PNG/JPG/WEBP
-   - [ ] Quality settings for lossy formats
-   - [ ] Transparent background support
-   - [ ] Export current layer vs all layers
+   - [x] Export as PNG/JPG/WEBP
+   - [x] Quality settings for lossy formats
+   - [x] Transparent background support
+   - [x] Export current layer vs all layers
 
 3. **Project Files**
-   - [ ] Save/load project as JSON (with layers)
-   - [ ] Preserve layer structure
-   - [ ] Include metadata
+   - [x] Save/load project as JSON (with layers)
+   - [x] Preserve layer structure
+   - [x] Include metadata
 
 4. **EXIF Support**
-   - [ ] Read EXIF data on import
-   - [ ] Display EXIF info
-   - [ ] Preserve EXIF on export (optional)
+   - [ ] Read EXIF data on import - TODO: Future enhancement
+   - [ ] Display EXIF info - TODO: Future enhancement
+   - [ ] Preserve EXIF on export (optional) - TODO: Future enhancement
 
 **Deliverables**:
 - ✅ Can open images via drag/drop/paste
@@ -353,122 +388,125 @@ paint-ui/
 
 ---
 
-### Phase 7: Image Effects & Filters (Week 8-10)
+### Phase 7: Image Effects & Filters (Week 8-10) ✅ COMPLETE
 
 **Goals**: Implement image manipulation effects
 
 #### Tasks:
 1. **Effect Architecture**
-   - [ ] Create BaseEffect class
-   - [ ] Implement effect preview system
-   - [ ] Add Web Worker support for heavy effects
-   - [ ] Create effect parameter UI
+   - [x] Create BaseEffect class
+   - [x] Implement effect preview system
+   - [ ] Add Web Worker support for heavy effects - TODO: Performance optimization
+   - [x] Create effect parameter UI (FilterDialog)
 
 2. **Color Adjustments**
-   - [ ] Brightness/Contrast
-   - [ ] Hue/Saturation/Lightness
-   - [ ] Levels
-   - [ ] Curves
-   - [ ] Auto color correction
-   - [ ] Invert/Negative
+   - [x] Brightness/Contrast
+   - [x] Hue/Saturation/Lightness
+   - [ ] Levels - TODO: Advanced feature
+   - [ ] Curves - TODO: Advanced feature
+   - [x] Auto color correction
+   - [x] Invert/Negative
 
 3. **Blur Effects**
-   - [ ] Gaussian Blur
-   - [ ] Box Blur
-   - [ ] Motion Blur
-   - [ ] Zoom Blur
+   - [x] Gaussian Blur
+   - [x] Box Blur
+   - [ ] Motion Blur - TODO: Future enhancement
+   - [ ] Zoom Blur - TODO: Future enhancement
 
 4. **Artistic Effects**
-   - [ ] Grayscale
-   - [ ] Sepia
-   - [ ] Oil Painting
-   - [ ] Pencil Sketch
-   - [ ] Mosaic
-   - [ ] Pixelate
+   - [x] Grayscale
+   - [x] Sepia
+   - [ ] Oil Painting - TODO: Future enhancement
+   - [ ] Pencil Sketch - TODO: Future enhancement
+   - [ ] Mosaic - TODO: Future enhancement
+   - [x] Pixelate
 
 5. **Distortion Effects**
-   - [ ] Bulge/Pinch
-   - [ ] Swirl
-   - [ ] Ripple
+   - [ ] Bulge/Pinch - TODO: Future enhancement
+   - [ ] Swirl - TODO: Future enhancement
+   - [ ] Ripple - TODO: Future enhancement
 
 6. **Other Effects**
-   - [ ] Sharpen
-   - [ ] Edge Detection
-   - [ ] Emboss
-   - [ ] Noise/Grain
-   - [ ] Vignette
+   - [x] Sharpen
+   - [x] Edge Detection
+   - [x] Emboss
+   - [x] Noise/Grain
+   - [x] Vignette
 
 **Deliverables**:
-- ✅ 20+ effects implemented
+- ✅ 15+ effects implemented (core set complete)
 - ✅ Effect preview working
-- ✅ Effects run in Web Workers
+- ⚠️ Effects run in main thread (Worker optimization TODO)
 
 ---
 
-### Phase 8: Advanced Tools (Week 10-12)
+### Phase 8: Advanced Tools (Week 10-12) ✅ MOSTLY COMPLETE
 
 **Goals**: Implement advanced editing tools
 
 #### Tasks:
 1. **Text Tool**
-   - [ ] Text rendering on canvas
-   - [ ] Font family selection
-   - [ ] Font size/style/weight
-   - [ ] Text color
-   - [ ] Text alignment
-   - [ ] Web font loading
+   - [ ] Text rendering on canvas - TODO: Phase 11
+   - [ ] Font family selection - TODO: Phase 11
+   - [ ] Font size/style/weight - TODO: Phase 11
+   - [ ] Text color - TODO: Phase 11
+   - [ ] Text alignment - TODO: Phase 11
+   - [ ] Web font loading - TODO: Phase 11
 
-2. **Shape Tools**
-   - [ ] Rectangle (fill/stroke)
-   - [ ] Ellipse (fill/stroke)
-   - [ ] Line
-   - [ ] Arrow
-   - [ ] Polygon
+2. **Shape Tools** ✅ COMPLETE (Phase 10)
+   - [x] Rectangle (fill/stroke)
+   - [x] Ellipse (fill/stroke)
+   - [x] Line
+   - [x] Arrow
+   - [x] Polygon
+   - [x] Star
+   - [x] Triangle
 
 3. **Advanced Tools**
-   - [ ] Clone Stamp Tool
-   - [ ] Healing Brush
-   - [ ] Blur/Sharpen Tool (brush-based)
-   - [ ] Smudge Tool
-   - [ ] Dodge/Burn
+   - [ ] Clone Stamp Tool - TODO: Future enhancement
+   - [ ] Healing Brush - TODO: Future enhancement
+   - [ ] Blur/Sharpen Tool (brush-based) - TODO: Future enhancement
+   - [ ] Smudge Tool - TODO: Future enhancement
+   - [ ] Dodge/Burn - TODO: Future enhancement
 
-4. **Transform Tools**
-   - [ ] Free Transform
-   - [ ] Rotate
-   - [ ] Scale
-   - [ ] Skew
-   - [ ] Perspective
+4. **Transform Tools** ✅ COMPLETE (Phase 9)
+   - [x] Free Transform
+   - [x] Rotate
+   - [x] Scale
+   - [x] Skew
+   - [ ] Perspective - TODO: Advanced feature
+   - [x] Move Tool
 
 **Deliverables**:
-- ✅ Text tool working with web fonts
+- ⚠️ Text tool TODO (Phase 11)
 - ✅ Shape tools functional
 - ✅ Transform operations smooth
 
 ---
 
-### Phase 9: Image Manipulation (Week 12-13)
+### Phase 9: Image Manipulation (Week 12-13) ✅ COMPLETE (Integrated with Phase 8-9)
 
 **Goals**: Advanced image operations
 
 #### Tasks:
 1. **Canvas Operations**
-   - [ ] Resize canvas
-   - [ ] Crop canvas
-   - [ ] Rotate canvas (90°, 180°, 270°)
-   - [ ] Flip horizontal/vertical
-   - [ ] Trim transparent pixels
+   - [x] Resize canvas
+   - [x] Crop canvas
+   - [x] Rotate canvas (90°, 180°, 270°)
+   - [x] Flip horizontal/vertical
+   - [ ] Trim transparent pixels - TODO: Utility feature
 
 2. **Image Resize**
-   - [ ] Resize with quality options
-   - [ ] Maintain aspect ratio
-   - [ ] Hermite/Bicubic algorithms
-   - [ ] Integration with pica library
+   - [x] Resize with quality options
+   - [x] Maintain aspect ratio
+   - [x] Hermite/Bicubic algorithms
+   - [x] Integration with pica library
 
 3. **Layer Operations**
-   - [ ] Merge layers
-   - [ ] Flatten image
-   - [ ] Duplicate layer
-   - [ ] Layer from selection
+   - [x] Merge layers
+   - [x] Flatten image
+   - [x] Duplicate layer
+   - [x] Layer from selection
 
 **Deliverables**:
 - ✅ All image operations working
@@ -477,98 +515,125 @@ paint-ui/
 
 ---
 
-### Phase 10: UI/UX Polish (Week 13-14)
+### Phase 10: UI/UX Polish (Week 13-14) ✅ MOSTLY COMPLETE
 
 **Goals**: Refine user interface and experience
 
 #### Tasks:
 1. **Responsive Design**
-   - [ ] Mobile-friendly layout
-   - [ ] Touch support for tools
-   - [ ] Collapsible panels
-   - [ ] Mobile menu
+   - [x] Mobile-friendly layout (professional editor layout)
+   - [ ] Touch support for tools - TODO: Mobile optimization
+   - [x] Collapsible panels (Resizable panels with state persistence)
+   - [x] Mobile menu
 
 2. **Accessibility**
-   - [ ] Keyboard navigation
-   - [ ] ARIA labels
-   - [ ] Focus management
-   - [ ] Screen reader support
+   - [x] Keyboard navigation (Ctrl+Z, Ctrl+Shift+Z, etc.)
+   - [ ] ARIA labels - TODO: Accessibility improvements
+   - [ ] Focus management - TODO: Accessibility improvements
+   - [ ] Screen reader support - TODO: Accessibility improvements
 
 3. **UI Components**
-   - [ ] Context menus (right-click)
-   - [ ] Tooltips
-   - [ ] Notification system
-   - [ ] Loading states
-   - [ ] Error boundaries
+   - [ ] Context menus (right-click) - TODO: Enhancement
+   - [x] Tooltips (via Radix UI)
+   - [ ] Notification system - TODO: Enhancement
+   - [x] Loading states
+   - [x] Error boundaries
 
 4. **Performance**
-   - [ ] Lazy load tools
-   - [ ] Code splitting
-   - [ ] Image optimization
-   - [ ] Bundle size analysis
+   - [ ] Lazy load tools - TODO: Optimization
+   - [ ] Code splitting - TODO: Optimization
+   - [ ] Image optimization - TODO: Optimization
+   - [ ] Bundle size analysis - TODO: Optimization
+
+**Additional Features Implemented**:
+- [x] Dark/Light theme toggle with persistence
+- [x] UI state persistence (panel positions, tool selection)
+- [x] Professional image editor layout structure
+- [x] Tool options bar with context-sensitive controls
+- [x] Transparent canvas background support
+- [x] Custom scrollbar styling
 
 **Deliverables**:
-- ✅ Fully responsive on all devices
-- ✅ Accessible (WCAG 2.1 AA)
-- ✅ Fast load times (<3s)
+- ✅ Professional UI layout
+- ⚠️ Accessibility improvements TODO
+- ✅ Fast load times with Next.js 16
 
 ---
 
-### Phase 11: Advanced Features (Week 14-16)
+### Phase 11: Advanced Features (Week 14-16) ⚠️ TODO
 
 **Goals**: Nice-to-have features
 
-#### Tasks:
-1. **Animation Support**
+#### Priority Tasks for Next Implementation:
+1. **Text Tool** ⭐ HIGH PRIORITY
+   - [ ] Text rendering on canvas
+   - [ ] Font family selection
+   - [ ] Font size/style/weight
+   - [ ] Text color and opacity
+   - [ ] Text alignment (left/center/right)
+   - [ ] Web font loading (Google Fonts integration)
+   - [ ] Text editing/repositioning
+
+2. **Advanced Brush Tools**
+   - [ ] Clone Stamp Tool
+   - [ ] Healing Brush
+   - [ ] Blur/Sharpen Tool (brush-based)
+   - [ ] Smudge Tool
+   - [ ] Dodge/Burn
+
+3. **Animation Support** (Future)
    - [ ] Frame timeline
    - [ ] Frame duplication
    - [ ] Onion skinning
    - [ ] Export as GIF
    - [ ] Export as APNG/WEBP animation
 
-2. **Batch Operations**
+4. **Batch Operations** (Future)
    - [ ] Apply effect to multiple layers
    - [ ] Batch export
    - [ ] Actions/macros recording
 
-3. **Plugins/Extensions**
+5. **Plugins/Extensions** (Future)
    - [ ] Plugin API design
    - [ ] Custom tool registration
    - [ ] Custom effect registration
 
 **Deliverables**:
-- ✅ Basic animation support
-- ✅ Plugin system foundation
+- ⚠️ Text tool (priority)
+- ⚠️ Advanced brush tools
+- ⏸️ Animation/batch/plugin features (nice-to-have)
 
 ---
 
-### Phase 12: Testing & Documentation (Week 16-18)
+### Phase 12: Testing & Documentation (Week 16-18) ⚠️ TODO
 
 **Goals**: Ensure quality and maintainability
 
 #### Tasks:
 1. **Testing**
-   - [ ] Unit tests (Vitest)
-   - [ ] Integration tests
-   - [ ] E2E tests (Playwright)
-   - [ ] Visual regression tests
+   - [ ] Unit tests (Vitest) - Core utilities and commands
+   - [ ] Integration tests - Tool interactions
+   - [ ] E2E tests (Playwright) - Complete workflows
+   - [ ] Visual regression tests - UI consistency
 
 2. **Documentation**
-   - [ ] User documentation
-   - [ ] API documentation
-   - [ ] Architecture guide
-   - [ ] Contributing guide
+   - [x] Implementation plan (this document)
+   - [ ] User documentation - How to use each tool
+   - [ ] API documentation - For developers
+   - [ ] Architecture guide - System design
+   - [ ] Contributing guide - For contributors
 
 3. **CI/CD**
+   - [x] Docker configuration
    - [ ] GitHub Actions setup
    - [ ] Automated testing
    - [ ] Build optimization
    - [ ] Deployment pipeline
 
 **Deliverables**:
-- ✅ 80%+ test coverage
-- ✅ Complete documentation
-- ✅ Automated deployments
+- ⚠️ Testing framework TODO
+- ⚠️ User documentation TODO
+- ⚠️ Automated CI/CD TODO
 
 ---