Feat: Show Gemini Usage in usage dropdown and mobile sidebar

apps/ui/src/lib/http-api-client.ts

@@ -41,7 +41,11 @@ import type {
   Notification,
 } from '@automaker/types';
 import type { Message, SessionListItem } from '@/types/electron';
-import type { ClaudeUsageResponse, CodexUsageResponse } from '@/store/app-store';
+import type {
+  ClaudeUsageResponse,
+  CodexUsageResponse,
+  GeminiUsage,
+} from '@/store/app-store';
 import type { WorktreeAPI, GitAPI, ModelDefinition, ProviderStatus } from '@/types/electron';
 import type { ModelId, ThinkingLevel, ReasoningEffort, Feature } from '@automaker/types';
 import { getGlobalFileBrowser } from '@/contexts/file-browser-context';
@@ -2688,6 +2692,11 @@ export class HttpApiClient implements ElectronAPI {
     },
   };
 
+  // Gemini API
+  gemini = {
+    getUsage: (): Promise<GeminiUsage> => this.get('/api/gemini/usage'),
+  };
+
   // Context API
   context = {
     describeImage: (