* fix WebrtcProvider use localhost for dev

package.json

@@ -4,7 +4,7 @@
   "private": true,
   "type": "module",
   "scripts": {
-    "dev": "vite",
+    "dev": "PORT=4444 npx y-webrtc & vite",
     "build": "tsc --noEmit && vite build",
     "preview": "vite preview"
   },

src/sync.ts

@@ -28,7 +28,9 @@ export function initSync(roomId: string): AppSync {
     ? "connecting"
     : "offline";
 
-  const provider = new WebrtcProvider(roomId, doc);
+  const provider = new WebrtcProvider(roomId, doc,{
+                signaling: ["ws://localhost:4444", "ws://lynxpi.ddns.net:4444"]
+            });
   const persistence = new IndexeddbPersistence(roomId, doc);
 
   const syncConnectionStatus = (status: ConnectionStatus) => {