feat: add integrated terminal with xterm.js and shell sessions

packages/backend/src/routes/terminal.ts

@@ -0,0 +1,25 @@
+import { Router } from "express";
+import {
+  createTerminalSession,
+  listSessions,
+  destroySession,
+} from "../services/terminal.service.js";
+
+const router = Router();
+
+router.get("/sessions", (_req, res) => {
+  res.json({ sessions: listSessions() });
+});
+
+router.post("/sessions", (req, res) => {
+  const id = (req.body.id as string) || `term-${Date.now()}`;
+  createTerminalSession(id);
+  res.json({ id });
+});
+
+router.delete("/sessions/:id", (req, res) => {
+  destroySession(req.params.id);
+  res.json({ ok: true });
+});
+
+export default router;