# Lumacs Development Continuation Prompt

Copy this entire prompt to start a new conversation and continue development:

---

I'm working on **Lumacs**, an Emacs-inspired text editor written in C++20 with ncurses and Lua scripting. The project is located at `/Users/user/Projects/lumacs`.

## Current Status

**Phase 5: Face System Complete - READY FOR GUI**
- Emacs compatibility: **~98/100**
- Build: Successful, binary at `./build/lumacs`
- **Face System**: Fully implemented with Inheritance and Lua API (`define_face`).
- **Architecture**: UI decoupled via `IEditorView`.

### Recent Accomplishments

#### 1. Face System Complete ✅
*   **Lua API**: Exposed `define_face` and `FaceAttributes` (with inheritance) to Lua.
*   **Inheritance**: Implemented recursive face attribute resolution in `Theme`.
*   **Semantic Mapping**: `TextAttribute` legacy enums map to semantic faces (e.g., `ColorType::Keyword` -> `font-lock-keyword-face`).

#### 2. GUI Readiness
*   `IEditorView` interface established.
*   `TuiEditor` refactored to implement `IEditorView`.

## Next Steps (Phase 6: GUI Frontend)

### Phase 6: GTK4 Frontend (New Priority)
*   **Build System**: Add GTK4 dependencies to `CMakeLists.txt`.
*   **Entry Point**: Create `src/main_gtk.cpp`.
*   **Implementation**: Create `GtkEditor` class implementing `IEditorView`.
*   **Rendering**: Implement text rendering using Pango/Cairo and the Face system.

### Future Roadmap
*   **Performance**: Redisplay optimization.
*   **LSP**: Language Server Protocol integration.

## Testing Instructions

### Build:
```bash
cmake --build build
```

### Test Face API:
```bash
# Verify Face API and Inheritance
./build/lumacs scripts/test_face_api.lua
```

### Verification:
*   **Lua API**: `define_face` works as expected.
*   **Faces**: UI elements are styled correctly using the Face system.

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**Phase 5 Complete! Face System & Architecture Ready for GTK4.**