feat: 更新服务地址为 192.168.1.9，修改相关配置以支持局域网访问

backend/vendor/s2s-cloud/demo/README.md

@@ -57,7 +57,7 @@ Realtime **GA** protocol and plays back the assistant's audio as it arrives.
 3. Open <http://localhost:7860/>, click the orb, allow the mic, talk.
 
 > Browsers require **HTTPS or `localhost`** for `getUserMedia()` (mic + camera).
-> `127.0.0.1` and `localhost` both work; plain `http://192.168.x.y` does NOT.
+> `192.168.1.9` and `localhost` both work; plain `http://192.168.x.y` does NOT.
 
 Smoke-test the backend from the shell:
 

backend/vendor/s2s-cloud/demo/index.html

@@ -21,7 +21,7 @@
   <body class="booting">
     <!-- Digital-human video, fixed as a full-viewport background layer -->
     <div id="avatar-stage" class="avatar-stage" aria-hidden="true">
-      <iframe id="avatar-frame" src="http://127.0.0.1:8010/embed.html" allow="autoplay; microphone" frameborder="0"></iframe>
+      <iframe id="avatar-frame" src="http://192.168.1.9:8010/embed.html" allow="autoplay; microphone" frameborder="0"></iframe>
     </div>
 
     <div id="app">

backend/vendor/s2s-cloud/demo/textchat.html

@@ -57,7 +57,7 @@ async function getWsUrl() {
     const cfg = await r.json();
     if (cfg.s2sUrl) return cfg.s2sUrl;
   } catch (e) { /* fall through */ }
-  return "ws://127.0.0.1:8765/v1/realtime";
+  return "ws://192.168.1.9:8765/v1/realtime";
 }
 
 // Must be called from a user gesture (button click) so the browser allows audio.