fix: 修复公告中心崩溃、皮肤预览错乱、分组不刷新与地图被拦

- 补回公告中心缺失的配图状态与加载函数，组件此前因引用未定义变量而崩溃
- 皮肤预览按玩家与纹理重建渲染器，避免切换后纹理错位
- 设置分组后同步本地实例分组字段，无需刷新页面
- 地图 iframe 的 CSP frame-src 放开 https，适配服务端可配置的地图地址

apps/app/tauri.conf.json

@@ -126,7 +126,7 @@
         "script-src": "'self' 'unsafe-eval' 'wasm-unsafe-eval'",
         "worker-src": "'self' blob:",
 
-        "frame-src": "https://www.youtube.com https://www.youtube-nocookie.com https://discord.com 'self' http://axolotl-skin.localhost axolotl-skin://localhost https://skin.starlight.cool https://map.starlight.cool",
+        "frame-src": "https: http://axolotl-skin.localhost axolotl-skin://localhost 'self'",
         "media-src": "'self' data: https://*.githubusercontent.com"
       },
       "csp": {
@@ -136,7 +136,7 @@
         "img-src": "https: 'unsafe-inline' 'self' asset: http://asset.localhost http://textures.minecraft.net blob: data:",
         "style-src": "'unsafe-inline' 'self'",
         "script-src": "'self' 'unsafe-eval' 'wasm-unsafe-eval'",
-        "frame-src": "https://www.youtube.com https://www.youtube-nocookie.com https://discord.com 'self' axolotl-skin://localhost http://axolotl-skin.localhost https://skin.starlight.cool https://map.starlight.cool",
+        "frame-src": "https: axolotl-skin://localhost http://axolotl-skin.localhost 'self'",
         "media-src": "'self' data: https://*.githubusercontent.com"
       }
     }