- types.ts: Screenplay element types, template configs, and interfaces
- format.ts: Auto-formatting engine with Standard, Sitcom, Podcast templates
- detect.ts: Element detection (scene headings, transitions, characters, parentheticals)
- ScreenplayEditor.tsx: Editor component with keyboard shortcuts and live formatting
- PreviewPanel.tsx: Real-time formatting preview panel
- detect.test.ts: 19 tests for element detection
- format.test.ts: 15 tests for formatting engine and templates
- Fixed transition regex to handle periods and other terminators
- All 34 tests passing
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