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/useSpeedTestEndpoints.ts

@@ -39,7 +39,8 @@ export function useSpeedTestEndpoints({
   initialData,
 }: UseSpeedTestEndpointsProps) {
   const claudeEndpoints = useMemo<EndpointCandidate[]>(() => {
-    if (appId !== "claude") return [];
+    // Reuse this branch for Claude and Gemini (non-Codex)
+    if (appId !== "claude" && appId !== "gemini") return [];
 
     const map = new Map<string, EndpointCandidate>();
     // 所有端点都标记为 isCustom: true，给用户完全的管理自由
@@ -66,26 +67,37 @@ export function useSpeedTestEndpoints({
     // 3. 编辑模式：初始数据中的 URL
     if (initialData && typeof initialData.settingsConfig === "object") {
       const configEnv = initialData.settingsConfig as {
-        env?: { ANTHROPIC_BASE_URL?: string };
+        env?: { ANTHROPIC_BASE_URL?: string; GOOGLE_GEMINI_BASE_URL?: string };
       };
-      const envUrl = configEnv.env?.ANTHROPIC_BASE_URL;
-      if (typeof envUrl === "string") {
-        add(envUrl);
-      }
+      const envUrls = [
+        configEnv.env?.ANTHROPIC_BASE_URL,
+        configEnv.env?.GOOGLE_GEMINI_BASE_URL,
+      ];
+      envUrls.forEach((u) => {
+        if (typeof u === "string") add(u);
+      });
     }
 
     // 4. 预设中的 endpointCandidates（也允许用户删除）
     if (selectedPresetId && selectedPresetId !== "custom") {
       const entry = presetEntries.find((item) => item.id === selectedPresetId);
       if (entry) {
-        const preset = entry.preset as ProviderPreset;
-        // 添加预设自己的 baseUrl
-        const presetEnv = preset.settingsConfig as {
-          env?: { ANTHROPIC_BASE_URL?: string };
+        const preset = entry.preset as ProviderPreset & {
+          settingsConfig?: { env?: { GOOGLE_GEMINI_BASE_URL?: string } };
+          endpointCandidates?: string[];
         };
-        if (presetEnv.env?.ANTHROPIC_BASE_URL) {
-          add(presetEnv.env.ANTHROPIC_BASE_URL);
-        }
+        // 添加预设自己的 baseUrl（兼容 Claude/Gemini）
+        const presetEnv = preset.settingsConfig as {
+          env?: {
+            ANTHROPIC_BASE_URL?: string;
+            GOOGLE_GEMINI_BASE_URL?: string;
+          };
+        };
+        const presetUrls = [
+          presetEnv?.env?.ANTHROPIC_BASE_URL,
+          presetEnv?.env?.GOOGLE_GEMINI_BASE_URL,
+        ];
+        presetUrls.forEach((u) => add(u));
         // 添加预设的候选端点
         if (preset.endpointCandidates) {
           preset.endpointCandidates.forEach((url) => add(url));