fix: Windows兼容 + Textual 8.x + MD3 SVG图标替代emoji

1. Windows: reuse_port 仅非win32平台启用
2. Textual 8.2.7: refresh() 加 **kwargs 兼容 repaint 参数
3. WebUI: 设置页/插件页 emoji → SVG (fill:currentColor 日夜间适配)

Co-Authored-By: Claude <noreply@anthropic.com>

config/permissions/pending_requests.json

@@ -526,5 +526,27 @@
       "framework.command.execute"
     ],
     "timestamp": 35916.627558381
+  },
+  "b9fd53b0": {
+    "plugin_name": "example_plugin",
+    "permissions": [
+      "plugin.example.read",
+      "plugin.example.write",
+      "plugin.example.execute",
+      "framework.event.subscribe",
+      "framework.command.execute"
+    ],
+    "timestamp": 36350.458260715
+  },
+  "930a37d0": {
+    "plugin_name": "sentinel",
+    "permissions": [
+      "plugin.sentinel.read",
+      "plugin.sentinel.write",
+      "plugin.network.access",
+      "framework.event.subscribe",
+      "framework.command.execute"
+    ],
+    "timestamp": 36350.46484983
   }
 }