fix: align drainage frontend configuration

server/edge-tts-server.ts

@@ -0,0 +1,24 @@
+import { createServer } from "node:http";
+import { createEdgeTtsMiddleware } from "./edge-tts-service";
+
+const host = "127.0.0.1";
+const port = 8790;
+const handleEdgeTts = createEdgeTtsMiddleware({ trustProxy: true });
+
+const server = createServer((request, response) => {
+  void handleEdgeTts(request, response, () => {
+    response.statusCode = 404;
+    response.end("Not Found");
+  });
+});
+
+server.listen(port, host, () => {
+  console.log(`[Agent TTS] Edge TTS adapter listening on http://${host}:${port}`);
+});
+
+function closeServer() {
+  server.close(() => process.exit(0));
+}
+
+process.on("SIGINT", closeServer);
+process.on("SIGTERM", closeServer);