feat(backend): initial setup for cms backend service

backend/README.md

@@ -0,0 +1,55 @@
+# Gallus Pub CMS Backend
+
+Headless CMS backend for managing Gallus Pub website content with Gitea OAuth authentication.
+
+## Setup
+
+1. Install dependencies:
+```bash
+npm install
+```
+
+2. Create `.env` file from `.env.example`:
+```bash
+cp .env.example .env
+```
+
+3. Update environment variables in `.env`:
+   - Set Gitea OAuth credentials
+   - Set Git repository URL and token
+   - JWT secrets are already generated
+
+4. Create data directory and run migrations:
+```bash
+mkdir -p data
+```
+
+5. Generate and run migrations:
+```bash
+npm run db:generate
+npm run db:migrate
+```
+
+6. Start development server:
+```bash
+npm run dev
+```
+
+Server will run at http://localhost:3000
+
+## Available Scripts
+
+- `npm run dev` - Start development server with watch mode
+- `npm run build` - Build for production
+- `npm run start` - Start production server
+- `npm run db:generate` - Generate database migrations
+- `npm run db:migrate` - Run database migrations
+- `npm run db:studio` - Open Drizzle Studio
+
+## Documentation
+
+See parent directory for complete documentation:
+- `CMS_CONCEPT.md` - System architecture
+- `CMS_GITEA_AUTH.md` - Authentication details
+- `CMS_IMPLEMENTATION_EXAMPLE.md` - Code examples
+- `CMS_SETUP_GUIDE.md` - Deployment guide