fix: refactoring, adding express api.

server/api.ts

@@ -0,0 +1,6 @@
+import express from "express";
+import router from "../src/features/api/router";
+
+export function mountApi(app: express.Express) {
+    app.use("/services/v1", router);
+}

server/server.ts

@@ -0,0 +1,41 @@
+import next from "next";
+import express from "express";
+import {mountApi} from "./api";
+
+const port = Number(process.env.PORT) || 8887;
+const dev = process.env.NODE_ENV !== "production";
+
+async function start() {
+    const nextApp = next({
+        dev,
+        port,
+        turbopack: true
+    });
+
+    const handle = nextApp.getRequestHandler();
+
+    await nextApp.prepare();
+
+    const server = express();
+
+    mountApi(server);
+
+    server.use((req, res, next) => {
+        if (req.path.startsWith('/services/v1')) return next();
+        handle(req, res).catch((err) => {
+            console.error('Next.js App Router error:', err);
+            res.status(500).send('Internal Server Error');
+        });
+    });
+
+    server.listen(port,  () => {
+        console.log(
+            `NEXT APP → http://localhost:${port}`
+        );
+        console.log(
+            `API → http://localhost:${port}/services/v1`
+        );
+    });
+}
+
+start();