同步完整源码至远程：i18n 多语种 settings 文案 + AI 供应商设置与终端工作区进行中的修改（13 文件）

src/i18n/locales/en/settings.json

@@ -144,6 +144,12 @@
     "wechatDesc": "加入交流群，问题反馈与版本动态"
   },
   "ai": {
+    "retestConnection": "Test connection again",
+    "cancelChanges": "Discard changes",
+    "configuration": "Configuration",
+    "active": "Default",
+    "unsaved": "Unsaved",
+    "testBeforeSave": "Test the connection before saving this configuration.",
     "presets": "Provider presets",
     "add": "Add",
     "configured": "Configured",
@@ -172,7 +178,7 @@
     "endpoint": "Endpoint",
     "advanced": "Advanced",
     "allowHttp": "Allow HTTP (localhost/LAN)",
-    "setActive": "Set as active",
+    "setActive": "Set as default",
     "deleteTitle": "Delete",
     "apiKeySaveFailed": "Failed to save API key",
     "providerNotFound": "Provider not found",