feat(gemini): add Gemini provider integration (#202)

* feat(gemini): add Gemini provider integration

- Add gemini_config.rs module for .env file parsing
- Extend AppType enum to support Gemini
- Implement GeminiConfigEditor and GeminiFormFields components
- Add GeminiIcon with standardized 1024x1024 viewBox
- Add Gemini provider presets configuration
- Update i18n translations for Gemini support
- Extend ProviderService and McpService for Gemini

* fix(gemini): resolve TypeScript errors, add i18n support, and fix MCP logic

**Critical Fixes:**
- Fix TS2741 errors in tests/msw/state.ts by adding missing Gemini type definitions
- Fix ProviderCard.extractApiUrl to support GOOGLE_GEMINI_BASE_URL display
- Add missing apps.gemini i18n keys (zh/en) for proper app name display
- Fix MCP service Gemini cross-app duplication logic to prevent self-copy

**Technical Details:**
- tests/msw/state.ts: Add gemini default providers, current ID, and MCP config
- ProviderCard.tsx: Check both ANTHROPIC_BASE_URL and GOOGLE_GEMINI_BASE_URL
- services/mcp.rs: Skip Gemini in sync_other_side logic with unreachable!() guards
- Run pnpm format to auto-fix code style issues

**Verification:**
- ✅ pnpm typecheck passes
- ✅ pnpm format completed

* feat(gemini): enhance authentication and config parsing

- Add strict and lenient .env parsing modes
- Implement PackyCode partner authentication detection
- Support Google OAuth official authentication
- Auto-configure security.auth.selectedType for PackyCode
- Add comprehensive test coverage for all auth types
- Update i18n for OAuth hints and Gemini config

---------

Co-authored-by: Jason <farion1231@gmail.com>

src/components/providers/forms/hooks/useApiKeyState.ts

@@ -11,6 +11,7 @@ interface UseApiKeyStateProps {
   onConfigChange: (config: string) => void;
   selectedPresetId: string | null;
   category?: ProviderCategory;
+  appType?: string;
 }
 
 /**
@@ -22,10 +23,11 @@ export function useApiKeyState({
   onConfigChange,
   selectedPresetId,
   category,
+  appType,
 }: UseApiKeyStateProps) {
   const [apiKey, setApiKey] = useState(() => {
     if (initialConfig) {
-      return getApiKeyFromConfig(initialConfig);
+      return getApiKeyFromConfig(initialConfig, appType);
     }
     return "";
   });
@@ -38,7 +40,7 @@ export function useApiKeyState({
         initialConfig || "{}",
         key.trim(),
         {
-          // 最佳实践：仅在"新增模式"且"非官方类别"时补齐缺失字段
+          // 最佳实践：仅在“新增模式”且“非官方类别”时补齐缺失字段
           // - 新增模式：selectedPresetId !== null
           // - 非官方类别：category !== undefined && category !== "official"
           // - 官方类别：不创建字段（UI 也会禁用输入框）
@@ -47,21 +49,23 @@ export function useApiKeyState({
             selectedPresetId !== null &&
             category !== undefined &&
             category !== "official",
+          appType,
         },
       );
 
       onConfigChange(configString);
     },
-    [initialConfig, selectedPresetId, category, onConfigChange],
+    [initialConfig, selectedPresetId, category, appType, onConfigChange],
   );
 
   const showApiKey = useCallback(
     (config: string, isEditMode: boolean) => {
       return (
-        selectedPresetId !== null || (isEditMode && hasApiKeyField(config))
+        selectedPresetId !== null ||
+        (isEditMode && hasApiKeyField(config, appType))
       );
     },
-    [selectedPresetId],
+    [selectedPresetId, appType],
   );
 
   return {