Initial commit: Backend with Bun.serve() + Drizzle ORM

- Bun 1.3.6 server setup
- MariaDB schema (projects, agents, tasks)
- Auto-migrations on startup
- WebSocket support
- Health check endpoint

Co-Authored-By: Claude Sonnet 4.5 (1M context) <noreply@anthropic.com>

src/index.ts

@@ -0,0 +1,84 @@
+/**
+ * AiWorker Backend - Main Entry Point
+ * Using Bun.serve() native API
+ */
+
+import { runMigrations } from './db/migrate'
+import { testConnection } from './db/client'
+
+console.log('🚀 Starting AiWorker Backend...')
+console.log(`Bun version: ${Bun.version}`)
+console.log(`Environment: ${process.env.NODE_ENV || 'development'}`)
+
+// Run migrations on startup
+await runMigrations()
+
+// Test database connection
+await testConnection()
+
+const PORT = process.env.PORT || 3000
+
+// Health check route
+function handleHealthCheck() {
+  return Response.json({
+    status: 'ok',
+    timestamp: new Date().toISOString(),
+    version: '1.0.0',
+    bun: Bun.version,
+  })
+}
+
+// Main server
+const server = Bun.serve({
+  port: PORT,
+
+  async fetch(req) {
+    const url = new URL(req.url)
+
+    // Health check
+    if (url.pathname === '/api/health') {
+      return handleHealthCheck()
+    }
+
+    // API routes
+    if (url.pathname.startsWith('/api/')) {
+      return Response.json({
+        message: 'AiWorker API',
+        path: url.pathname,
+        method: req.method,
+      })
+    }
+
+    // Root
+    if (url.pathname === '/') {
+      return new Response('AiWorker Backend - Running on Bun 🚀', {
+        headers: { 'Content-Type': 'text/plain' }
+      })
+    }
+
+    // 404
+    return new Response('Not Found', { status: 404 })
+  },
+
+  // WebSocket support
+  websocket: {
+    open(ws) {
+      console.log('WebSocket client connected')
+      ws.send(JSON.stringify({ type: 'connected', timestamp: Date.now() }))
+    },
+    message(ws, message) {
+      console.log('WebSocket message:', message)
+      // Echo back for now
+      ws.send(message)
+    },
+    close(ws) {
+      console.log('WebSocket client disconnected')
+    },
+  },
+
+  // Development mode
+  development: process.env.NODE_ENV === 'development',
+})
+
+console.log(`✅ Server listening on http://localhost:${server.port}`)
+console.log(`📊 Health check: http://localhost:${server.port}/api/health`)