feat(web): add Express + WebSocket server entry

web/server/index.ts

@@ -0,0 +1,37 @@
+import express from 'express';
+import cors from 'cors';
+import { createServer } from 'http';
+import { WebSocketServer } from 'ws';
+import { initDb } from './db';
+import { accountsRouter } from './routes/accounts';
+import { promptsRouter } from './routes/prompts';
+import { pipelineRouter } from './routes/pipeline';
+import { assetsRouter } from './routes/assets';
+import { configsRouter } from './routes/configs';
+
+const app = express();
+const server = createServer(app);
+const wss = new WebSocketServer({ server, path: '/ws' });
+
+app.use(cors());
+app.use(express.json({ limit: '50mb' }));
+
+app.use('/api/accounts', accountsRouter);
+app.use('/api/prompts', promptsRouter);
+app.use('/api/pipeline', pipelineRouter);
+app.use('/api/assets', assetsRouter);
+app.use('/api/configs', configsRouter);
+
+wss.on('connection', (ws) => {
+  // Placeholder - will be replaced in Task 3.1
+  console.log('WebSocket client connected');
+  ws.on('message', (data) => {
+    console.log('received:', data.toString());
+  });
+});
+
+const PORT = 3001;
+initDb();
+server.listen(PORT, () => {
+  console.log(`Server running on http://localhost:${PORT}`);
+});