feat: add Grok, OpenAI, Claude, Gemini, Kimi AI providers

- Add new MCP clients for Grok (xAI), OpenAI, Claude, Gemini, Kimi
- Update auto_trader, backtest, and strategy to support all providers
- Add provider icons and fix SVG gradient conflicts
- Add API application links and hints in model config modal
- Show model version in AI model list cards
- Add Chinese/English translations for provider hints
- Remove deprecated traders component files

web/src/i18n/translations.ts

@@ -518,10 +518,16 @@ export const translations = {
       'Custom API base URL, e.g.: https://api.openai.com/v1',
     leaveBlankForDefault: 'Leave blank to use default API address',
     modelConfigInfo1:
-      '• API Key will be encrypted and stored, please ensure it is valid',
-    modelConfigInfo2: '• Base URL is used for custom API server address',
+      '• For official API, only API Key is required, leave other fields blank',
+    modelConfigInfo2: '• Custom Base URL and Model Name only needed for third-party proxies',
     modelConfigInfo3:
-      '• After deleting configuration, traders using this model will not work properly',
+      '• API Key is encrypted and stored securely',
+    defaultModel: 'Default model',
+    applyApiKey: 'Apply API Key',
+    kimiApiNote: 'Kimi requires API Key from international site (moonshot.ai), China region keys are not compatible',
+    leaveBlankForDefaultModel: 'Leave blank to use default model',
+    customModelName: 'Model Name (Optional)',
+    customModelNamePlaceholder: 'e.g.: deepseek-chat, qwen3-max, gpt-4o',
     saveConfig: 'Save Configuration',
     editExchange: 'Edit Exchange',
     addExchange: 'Add Exchange',
@@ -1506,9 +1512,15 @@ export const translations = {
     customBaseURL: 'Base URL (可选)',
     customBaseURLPlaceholder: '自定义API基础URL，如: https://api.openai.com/v1',
     leaveBlankForDefault: '留空则使用默认API地址',
-    modelConfigInfo1: '• API Key将被加密存储，请确保密钥有效',
-    modelConfigInfo2: '• Base URL用于自定义API服务器地址',
-    modelConfigInfo3: '• 删除配置后，使用此模型的交易员将无法正常工作',
+    modelConfigInfo1: '• 使用官方 API 时，只需填写 API Key，其他字段留空即可',
+    modelConfigInfo2: '• 自定义 Base URL 和 Model Name 仅在使用第三方代理时需要填写',
+    modelConfigInfo3: '• API Key 加密存储，不会明文展示',
+    defaultModel: '默认模型',
+    applyApiKey: '申请 API Key',
+    kimiApiNote: 'Kimi 需要从国际站申请 API Key (moonshot.ai)，中国区 Key 不通用',
+    leaveBlankForDefaultModel: '留空使用默认模型名称',
+    customModelName: 'Model Name (可选)',
+    customModelNamePlaceholder: '例如: deepseek-chat, qwen3-max, gpt-4o',
     saveConfig: '保存配置',
     editExchange: '编辑交易所',
     addExchange: '添加交易所',