feat: enhance WebSocket configuration in API route

- Integrated sidebar configuration retrieval to improve WebSocket URL management.
- Updated the GET method to prioritize the sidebar config's wsUrl, falling back to the environment variable if necessary.
- Set the runtime to 'edge' for optimized performance.

app/api/ws-config/route.ts

@@ -1,7 +1,12 @@
 import { NextResponse } from "next/server";
+import { getSidebarConfig } from "../../config/server";
+
+const config = getSidebarConfig();
 
 export async function GET() {
   return NextResponse.json({
-    wsUrl: process.env.WS_URL ?? "",
+    wsUrl: config.wsUrl || process.env.WS_URL || "",
   });
 }
+
+export const runtime = "edge";