feat(bridge): connect Gravity Web server to Extension Bridge — proxy routes + WS forwarding

server/index.js

@@ -11,6 +11,7 @@ const path = require('path');
 const { WebSocketServer, WebSocket } = require('ws');
 const SessionManager = require('./session-manager');
 const { AutoDiscovery } = require('./auto-discover');
+const BridgeClient = require('./bridge-client');
 
 const PORT = process.env.PORT || 3300;
 const app = express();
@@ -252,7 +253,80 @@ function broadcastSessions() {
     }
 }
 
-// ─── REST API ───────────────────────────────────────────
+// ─── Bridge API 프록시 ──────────────────────────────────
+
+const bridge = new BridgeClient();
+
+app.get('/api/bridge/health', async (req, res) => {
+    try {
+        const health = await bridge.checkHealth();
+        res.json(health);
+    } catch (e) {
+        res.json({ available: false, error: e.message });
+    }
+});
+
+app.get('/api/bridge/sessions', async (req, res) => {
+    try {
+        const data = await bridge.getSessions();
+        res.json(data);
+    } catch (e) {
+        res.status(502).json({ error: 'Bridge 연결 실패: ' + e.message });
+    }
+});
+
+app.get('/api/bridge/cascades', async (req, res) => {
+    try {
+        const data = await bridge.getCascades();
+        res.json(data);
+    } catch (e) {
+        res.status(502).json({ error: 'Bridge 연결 실패: ' + e.message });
+    }
+});
+
+app.post('/api/bridge/send', async (req, res) => {
+    try {
+        const { message, sessionId } = req.body;
+        const result = await bridge.sendMessage(message, sessionId);
+        res.json(result);
+    } catch (e) {
+        res.status(502).json({ error: e.message });
+    }
+});
+
+app.post('/api/bridge/accept', async (req, res) => {
+    try {
+        const result = await bridge.acceptStep();
+        res.json(result);
+    } catch (e) {
+        res.status(502).json({ error: e.message });
+    }
+});
+
+app.post('/api/bridge/reject', async (req, res) => {
+    try {
+        const result = await bridge.rejectStep();
+        res.json(result);
+    } catch (e) {
+        res.status(502).json({ error: e.message });
+    }
+});
+
+app.post('/api/bridge/accept-terminal', async (req, res) => {
+    try {
+        const result = await bridge.acceptTerminal();
+        res.json(result);
+    } catch (e) {
+        res.status(502).json({ error: e.message });
+    }
+});
+
+// Bridge WS 이벤트 → 프론트엔드 포워딩
+bridge.connectWs((msg) => {
+    broadcastToAll({ type: 'bridge_event', ...msg });
+});
+
+// ─── CDP REST API (레거시) ──────────────────────────────
 
 app.get('/api/sessions', (req, res) => {
     res.json(sessionManager.listSessions());