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

frontend/postcss.config.js

@@ -0,0 +1,6 @@
+export default {
+  plugins: {
+    tailwindcss: {},
+    autoprefixer: {},
+  },
+}