docs: update documentation to reflect headless API-only web service

- AGENTS.md: Update project description from web dashboard to REST API

- README.md: Replace Web Dashboard section with REST API, update tech stack

- docs/main.md: Refactor Web Dashboard section to REST API documentation

- web/README.md: Rewrite from React setup to API endpoint documentation

All React/UI references removed - web is now API-only

web/README.md

@@ -1,21 +1,30 @@
-# Aurora Web
+# Aurora Web API
 
-To install dependencies:
+The web API provides a REST interface and WebSocket support for accessing Aurora bot data and configuration.
+
+## API Endpoints
+
+- `GET /api/stats` - Real-time bot statistics
+- `GET /api/settings` - Bot configuration
+- `GET /api/users` - User data
+- `GET /api/items` - Item catalog
+- `GET /api/quests` - Quest information
+- `GET /api/transactions` - Economy data
+- `GET /api/health` - Health check
+
+## WebSocket
+
+Connect to `/ws` for real-time updates:
+- Stats broadcasts every 5 seconds
+- Event notifications via system bus
+- PING/PONG heartbeat support
+
+## Development
+
+The API runs automatically when you start the bot:
 
 ```bash
-bun install
+bun run dev
 ```
 
-To start a development server:
-
-```bash
-bun dev
-```
-
-To run for production:
-
-```bash
-bun start
-```
-
-This project was created using `bun init` in bun v1.3.3. [Bun](https://bun.com) is a fast all-in-one JavaScript runtime.
+The API will be available at `http://localhost:3000`