fix(openclaw): address code review findings across P0-P3 issues

- Add 25 missing i18n keys for OpenClawFormFields in all 3 locales (P0)
- Replace key={index} with stable crypto.randomUUID() keys in EnvPanel,
  ToolsPanel, and OpenClawFormFields to prevent list state bugs (P1)
- Exclude openclaw from ProxyToggle/FailoverToggle in App.tsx (P1)
- Add merge_additive_config() for openclaw/opencode deep link imports (P1)
- Normalize serde(flatten) field naming to `extra` + HashMap (P2)
- Add directory existence check in remove_openclaw_provider_from_live (P2)
- Remove dead code in import_default_config and openclaw API methods (P2)
- Add duplicate key validation in EnvPanel before save (P2)
- Add openclawConfigDir to Settings type (P2)
- Add staleTime to OpenClaw query hooks (P3)
- Fix type-unsafe delete via destructuring in mutations.ts (P3)

src/i18n/locales/en.json

@@ -744,7 +744,31 @@
     "providerKeyHint": "Unique identifier in config file. Cannot be changed after creation. Use lowercase letters, numbers, and hyphens only.",
     "providerKeyRequired": "Provider key is required",
     "providerKeyDuplicate": "This key is already in use",
-    "providerKeyInvalid": "Invalid format. Use lowercase letters, numbers, and hyphens only."
+    "providerKeyInvalid": "Invalid format. Use lowercase letters, numbers, and hyphens only.",
+    "apiProtocol": "API Protocol",
+    "selectProtocol": "Select API Protocol",
+    "apiProtocolHint": "Select the protocol type compatible with the provider's API. Most providers use OpenAI Completions format.",
+    "baseUrl": "API Endpoint",
+    "baseUrlHint": "The provider's API endpoint address.",
+    "models": "Models",
+    "addModel": "Add Model",
+    "noModels": "No models configured. Click Add Model to configure available models.",
+    "modelId": "Model ID",
+    "modelIdPlaceholder": "claude-3-sonnet",
+    "modelName": "Display Name",
+    "modelNamePlaceholder": "Claude 3 Sonnet",
+    "contextWindow": "Context Window",
+    "maxTokens": "Max Output Tokens",
+    "reasoning": "Reasoning Mode",
+    "reasoningOn": "Enabled",
+    "reasoningOff": "Disabled",
+    "inputCost": "Input Cost ($/M tokens)",
+    "outputCost": "Output Cost ($/M tokens)",
+    "advancedOptions": "Advanced Options",
+    "cacheReadCost": "Cache Read Cost ($/M tokens)",
+    "cacheWriteCost": "Cache Write Cost ($/M tokens)",
+    "cacheCostHint": "Cache costs are used to calculate Prompt Caching costs. Leave empty if not using caching.",
+    "modelsHint": "Configure the models supported by this provider. Model ID is used for API calls, Display Name for the interface."
   },
   "providerPreset": {
     "label": "Provider Preset",
@@ -1143,7 +1167,8 @@
       "add": "Add Variable",
       "saveSuccess": "Environment variables saved",
       "saveFailed": "Failed to save environment variables",
-      "loadFailed": "Failed to load environment variables"
+      "loadFailed": "Failed to load environment variables",
+      "duplicateKey": "Duplicate variable name detected: {{key}}"
     },
     "tools": {
       "title": "Tool Permissions",

src/i18n/locales/ja.json

@@ -744,7 +744,31 @@
     "providerKeyHint": "設定ファイル内のユニーク識別子。作成後は変更できません。小文字、数字、ハイフンのみ使用可能。",
     "providerKeyRequired": "プロバイダーキーを入力してください",
     "providerKeyDuplicate": "このキーは既に使用されています",
-    "providerKeyInvalid": "無効な形式です。小文字、数字、ハイフンのみ使用可能。"
+    "providerKeyInvalid": "無効な形式です。小文字、数字、ハイフンのみ使用可能。",
+    "apiProtocol": "API プロトコル",
+    "selectProtocol": "API プロトコルを選択",
+    "apiProtocolHint": "プロバイダーの API と互換性のあるプロトコルタイプを選択してください。ほとんどのプロバイダーは OpenAI Completions 形式を使用します。",
+    "baseUrl": "API エンドポイント",
+    "baseUrlHint": "プロバイダーの API エンドポイントアドレス。",
+    "models": "モデル一覧",
+    "addModel": "モデルを追加",
+    "noModels": "モデルが設定されていません。「モデルを追加」をクリックして利用可能なモデルを設定してください。",
+    "modelId": "モデル ID",
+    "modelIdPlaceholder": "claude-3-sonnet",
+    "modelName": "表示名",
+    "modelNamePlaceholder": "Claude 3 Sonnet",
+    "contextWindow": "コンテキストウィンドウ",
+    "maxTokens": "最大出力トークン数",
+    "reasoning": "推論モード",
+    "reasoningOn": "有効",
+    "reasoningOff": "無効",
+    "inputCost": "入力コスト ($/M トークン)",
+    "outputCost": "出力コスト ($/M トークン)",
+    "advancedOptions": "詳細オプション",
+    "cacheReadCost": "キャッシュ読取コスト ($/M トークン)",
+    "cacheWriteCost": "キャッシュ書込コスト ($/M トークン)",
+    "cacheCostHint": "キャッシュコストは Prompt Caching のコスト計算に使用されます。キャッシュを使用しない場合は空欄のままにしてください。",
+    "modelsHint": "このプロバイダーがサポートするモデルを設定します。モデル ID は API 呼び出しに、表示名はインターフェースに使用されます。"
   },
   "providerPreset": {
     "label": "プロバイダータイプ",
@@ -1143,7 +1167,8 @@
       "add": "変数を追加",
       "saveSuccess": "環境変数を保存しました",
       "saveFailed": "環境変数の保存に失敗しました",
-      "loadFailed": "環境変数の読み込みに失敗しました"
+      "loadFailed": "環境変数の読み込みに失敗しました",
+      "duplicateKey": "重複する変数名が検出されました: {{key}}"
     },
     "tools": {
       "title": "ツール権限",

src/i18n/locales/zh.json

@@ -744,7 +744,31 @@
     "providerKeyHint": "配置文件中的唯一标识符，创建后无法修改，只能使用小写字母、数字和连字符",
     "providerKeyRequired": "请填写供应商标识",
     "providerKeyDuplicate": "此标识已被使用，请更换",
-    "providerKeyInvalid": "标识格式无效，只能使用小写字母、数字和连字符"
+    "providerKeyInvalid": "标识格式无效，只能使用小写字母、数字和连字符",
+    "apiProtocol": "API 协议",
+    "selectProtocol": "选择 API 协议",
+    "apiProtocolHint": "选择与供应商 API 兼容的协议类型。大多数供应商使用 OpenAI Completions 格式。",
+    "baseUrl": "API 端点",
+    "baseUrlHint": "供应商的 API 端点地址。",
+    "models": "模型列表",
+    "addModel": "添加模型",
+    "noModels": "暂无模型配置。点击添加模型来配置可用模型。",
+    "modelId": "模型 ID",
+    "modelIdPlaceholder": "claude-3-sonnet",
+    "modelName": "显示名称",
+    "modelNamePlaceholder": "Claude 3 Sonnet",
+    "contextWindow": "上下文窗口",
+    "maxTokens": "最大输出 Tokens",
+    "reasoning": "推理模式",
+    "reasoningOn": "启用",
+    "reasoningOff": "关闭",
+    "inputCost": "输入价格 ($/M tokens)",
+    "outputCost": "输出价格 ($/M tokens)",
+    "advancedOptions": "高级选项",
+    "cacheReadCost": "缓存读取价格 ($/M tokens)",
+    "cacheWriteCost": "缓存写入价格 ($/M tokens)",
+    "cacheCostHint": "缓存价格用于计算 Prompt Caching 的成本。如不使用缓存可留空。",
+    "modelsHint": "配置该供应商支持的模型。模型 ID 用于 API 调用，显示名称用于界面展示。"
   },
   "providerPreset": {
     "label": "预设供应商",
@@ -1143,7 +1167,8 @@
       "add": "添加变量",
       "saveSuccess": "环境变量已保存",
       "saveFailed": "保存环境变量失败",
-      "loadFailed": "读取环境变量失败"
+      "loadFailed": "读取环境变量失败",
+      "duplicateKey": "检测到重复的变量名: {{key}}"
     },
     "tools": {
       "title": "工具权限",