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FRONTEND_INFO.md

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+# MetaCourse — Frontend Info for Backend Setup
+
+## Framework
+Angular 20.3 (standalone components, no NgModule)
+Ionic 8.8.4 (UI components)
+Capacitor 8.3 (mobile wrapper — Android & iOS)
+
+## API Base URL (currently hardcoded)
+File: src/app/services/api.service.ts
+Value: http://localhost:8080
+
+## Auth
+- No HTTP interceptor — tokens are NOT sent in headers automatically
+- User info stored in localStorage under key: metacourse_user
+- Format: { userId: string, name: string, email: string }
+- No JWT implementation yet — backend can choose session or JWT
+
+## CORS
+Dev server runs on http://localhost:4200
+Backend must allow that origin
+
+## Expected API prefix
+All endpoints are prefixed with /api
+Examples: /api/users/login, /api/courses, /api/topics
+
+## Data formats
+- All requests/responses: JSON
+- IDs: string (UUID expected)
+- Dates: ISO 8601 string
+
+## Error format expected by frontend
+{ message: string }
+
+## Environment files
+No environment.ts files exist yet.
+Backend should provide a base URL to hardcode or an environment file template.