feat(admin): wire analytics dashboard route

src/lib/api.ts

@@ -416,6 +416,22 @@ class ApiClient {
     });
   }
 
+  async getAdminDashboard(params?: {
+    date_from?: string;
+    date_to?: string;
+    event_id?: number;
+    granularity?: 'auto' | 'day' | 'week' | 'month';
+  }) {
+    const query = new URLSearchParams();
+    if (params?.date_from) query.set('date_from', params.date_from);
+    if (params?.date_to) query.set('date_to', params.date_to);
+    if (params?.event_id != null) query.set('event_id', String(params.event_id));
+    if (params?.granularity) query.set('granularity', params.granularity);
+    return this.request<Types.AdminDashboardAnalyticsSchema>(
+      `/api/analytics/admin/dashboard${query.toString() ? `?${query.toString()}` : ''}`,
+    );
+  }
+
   // ============= Blog Endpoints =============
   
   async getPosts(params?: {

src/lib/types.ts

@@ -753,6 +753,108 @@ export interface PaginatedResponse<T> {
   previous?: string;
 }
 
+// Admin analytics
+export interface AnalyticsPointSchema {
+  label: string;
+  value: number;
+}
+
+export interface AnalyticsTrendPointSchema {
+  date: string;
+  label: string;
+  value: number;
+}
+
+export interface AnalyticsRegistrationStatusSchema {
+  status: string;
+  label: string;
+  value: number;
+}
+
+export interface AnalyticsTopEventSchema {
+  id: number;
+  title: string;
+  slug: string;
+  attendees: number;
+  capacity?: number | null;
+  fill_rate?: number | null;
+  revenue: number;
+}
+
+export interface AnalyticsPostPopularitySchema {
+  id: number;
+  title: string;
+  slug: string;
+  likes: number;
+  saves: number;
+  comments: number;
+}
+
+export interface AnalyticsTopPostSchema extends AnalyticsPostPopularitySchema {
+  score: number;
+}
+
+export interface AdminDashboardAnalyticsSchema {
+  filters: {
+    date_from?: string | null;
+    date_to?: string | null;
+    event_id?: number | null;
+    granularity: 'day' | 'week' | 'month';
+  };
+  summary: {
+    total_users: number;
+    verified_users: number;
+    total_events: number;
+    total_registrations: number;
+    total_revenue: number;
+    total_discount: number;
+    published_posts: number;
+    total_likes: number;
+    total_saves: number;
+    total_comments: number;
+  };
+  users: {
+    signup_trend: AnalyticsTrendPointSchema[];
+    by_major: AnalyticsPointSchema[];
+    by_university: AnalyticsPointSchema[];
+    by_year: AnalyticsPointSchema[];
+  };
+  events: {
+    registration_status: AnalyticsRegistrationStatusSchema[];
+    by_major: AnalyticsPointSchema[];
+    by_university: AnalyticsPointSchema[];
+    top_events: AnalyticsTopEventSchema[];
+    registration_trend: AnalyticsTrendPointSchema[];
+  };
+  revenue: {
+    trend: AnalyticsTrendPointSchema[];
+    by_event: AnalyticsPointSchema[];
+    payment_status: AnalyticsRegistrationStatusSchema[];
+    total_paid: number;
+    total_discount: number;
+    total_base: number;
+  };
+  blog: {
+    totals: {
+      posts: number;
+      likes: number;
+      saves: number;
+      comments: number;
+    };
+    post_popularity: AnalyticsPostPopularitySchema[];
+    top_posts: AnalyticsTopPostSchema[];
+    activity_trend: Array<{ date: string; likes: number; saves: number; comments: number }>;
+    by_category: AnalyticsPointSchema[];
+    by_tag: AnalyticsPointSchema[];
+  };
+  achievements: {
+    distinct_participants: number;
+    learning_hours: number;
+    published_content: number;
+    community_engagement: number;
+  };
+}
+
 // payment
 export interface CreatePaymentOut {
   start_pay_url: string;