This commit implements 5 major JavaScript features that were lost during
refactoring, using systematic Test-Driven Development methodology:
**Core Features Implemented:**
- Advanced EditState enum with pending changes preservation
- Keyboard shortcuts (Ctrl+Enter accept, Escape cancel)
- Section splitting with dynamic heading detection
- Real-time status tracking with 2-second periodic updates
- Intelligent filename generation with 4-method fallback system
**Technical Improvements:**
- Comprehensive TDD test suites for all functionality
- Professional status panel with color-coded indicators
- Smart filename generation (options→title→URL→heading→timestamp)
- Event-driven architecture with custom event emission
- State preservation during editing transitions
**Files Added:**
- markitect/static/editor.js - Complete JavaScript functionality
- test_*.js - Comprehensive TDD test suites
- LOST_FUNCTIONALITY_ANALYSIS.md - Detailed feature comparison
- TEST_ENVIRONMENT.md - TDD setup documentation
**Updated Documentation:**
- TODO.md - Status tracking and progress documentation
All features are fully tested and integrated into the existing codebase.
The TDD approach proved highly effective for systematic functionality recovery.
🤖 Generated with [Claude Code](https://claude.ai/code)
Co-Authored-By: Claude <noreply@anthropic.com>
