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/AddProviderDialog.tsx

@@ -18,6 +18,7 @@ import {
 } from "@/components/providers/forms/ProviderForm";
 import { providerPresets } from "@/config/claudeProviderPresets";
 import { codexProviderPresets } from "@/config/codexProviderPresets";
+import { geminiProviderPresets } from "@/config/geminiProviderPresets";
 
 interface AddProviderDialogProps {
   open: boolean;
@@ -96,6 +97,21 @@ export function AddProviderDialog({
                 preset.endpointCandidates.forEach(addUrl);
               }
             }
+          } else if (appId === "gemini") {
+            const presets = geminiProviderPresets;
+            const presetIndex = parseInt(
+              values.presetId.replace("gemini-", ""),
+            );
+            if (
+              !isNaN(presetIndex) &&
+              presetIndex >= 0 &&
+              presetIndex < presets.length
+            ) {
+              const preset = presets[presetIndex];
+              if (Array.isArray(preset.endpointCandidates)) {
+                preset.endpointCandidates.forEach(addUrl);
+              }
+            }
           }
         }
 
@@ -114,6 +130,11 @@ export function AddProviderDialog({
               addUrl(baseUrlMatch[1]);
             }
           }
+        } else if (appId === "gemini") {
+          const env = parsedConfig.env as Record<string, any> | undefined;
+          if (env?.GOOGLE_GEMINI_BASE_URL) {
+            addUrl(env.GOOGLE_GEMINI_BASE_URL);
+          }
         }
 
         const urls = Array.from(urlSet);
@@ -144,7 +165,9 @@ export function AddProviderDialog({
   const submitLabel =
     appId === "claude"
       ? t("provider.addClaudeProvider")
-      : t("provider.addCodexProvider");
+      : appId === "codex"
+        ? t("provider.addCodexProvider")
+        : t("provider.addGeminiProvider");
 
   return (
     <Dialog open={open} onOpenChange={onOpenChange}>