feat: Add REST API endpoints to Trinity Core (v2.2.0)

- GET /servers — list available servers (for Arbiter)
- POST /exec — execute command on server (for Arbiter)
- REST endpoints run alongside MCP protocol
- MCP for Claude.ai connector, REST for Arbiter internal calls
- Fixes Infrastructure module 404 errors
- Version bump 2.1.0 → 2.2.0

Chronicler #78 | firefrost-services

services/trinity-core/index.js

@@ -131,10 +131,40 @@ function setupToolHandlers(mcpServer) {
 
 const activeSessions = new Map();
 
+// ─── REST API (for Arbiter / internal services) ───
+
+app.get('/servers', auth, (req, res) => {
+  log(`REST /servers`);
+  res.json({ servers: Object.keys(SERVERS) });
+});
+
+app.post('/exec', auth, async (req, res) => {
+  const { server, command } = req.body;
+  if (!server || !command) {
+    return res.status(400).json({ error: 'Missing server or command' });
+  }
+  if (!SERVERS[server]) {
+    return res.status(400).json({ error: `Unknown server: ${server}` });
+  }
+  const target = SERVERS[server];
+  const result = target.local
+    ? await executeLocal(command)
+    : await executeSSH(server, command);
+  log(`REST /exec [${server}] -> ${result.success ? 'OK' : 'FAIL'}`);
+  res.json({
+    success: result.success,
+    output: result.stdout || '',
+    stderr: result.stderr || '',
+    error: result.error
+  });
+});
+
+// ─── MCP Protocol (for Claude.ai connector) ───
+
 app.get('/mcp', auth, async (req, res) => {
   log(`SSE connection from ${req.ip}`);
 
-  const mcpServer = new Server({ name: "trinity-core", version: "2.1.0" }, { capabilities: { tools: {} } });
+  const mcpServer = new Server({ name: "trinity-core", version: "2.2.0" }, { capabilities: { tools: {} } });
   setupToolHandlers(mcpServer);
 
   mcpServer.onmessage = (msg) => log(`SERVER MSG: ${JSON.stringify(msg)}`);
@@ -171,4 +201,4 @@ app.post('/mcp/messages', auth, async (req, res) => {
   }
 });
 
-app.listen(PORT, () => log(`Trinity Core MCP v2.1.0 started on port ${PORT}`));
+app.listen(PORT, () => log(`Trinity Core MCP v2.2.0 started on port ${PORT}`));

services/trinity-core/package.json

@@ -1,6 +1,6 @@
 {
   "name": "trinity-core",
-  "version": "2.1.0",
+  "version": "2.2.0",
   "type": "module",
   "main": "index.js",
   "dependencies": {