Initial scaffold: FastAPI backend + React frontend + Docker Compose

- Backend: FastAPI with SQLite, clip CRUD, health check
- Frontend: React + Vite + TypeScript + Tailwind, dark theme
- Components: Generator, Gallery, Player
- Docker: Compose setup for backend + frontend
- Architecture docs in Palace KB

.gitignore

@@ -0,0 +1,33 @@
+# Python
+__pycache__/
+*.py[cod]
+*$py.class
+*.so
+.Python
+env/
+venv/
+.venv/
+
+# Node
+node_modules/
+dist/
+*.log
+
+# Data
+data/clips/*.mp3
+data/*.db
+*.db
+
+# IDE
+.vscode/
+.idea/
+*.swp
+*.swo
+
+# OS
+.DS_Store
+Thumbs.db
+
+# Env
+.env
+.env.local