feat: restore landing style and add separate courses/admin UX

apps/web/src/lib/api.ts

@@ -419,6 +419,38 @@ class ApiClient {
     return this.request<any>(`/moderation/reviews/${reviewId}/unhide`, { method: 'POST' });
   }
 
+  async getModerationCourses(params?: { status?: string; search?: string }) {
+    const searchParams = new URLSearchParams();
+    if (params?.status) searchParams.set('status', params.status);
+    if (params?.search) searchParams.set('search', params.search);
+    const query = searchParams.toString();
+    return this.request<any[]>(`/moderation/courses${query ? `?${query}` : ''}`);
+  }
+
+  async getPendingModerationCourses() {
+    return this.request<any[]>('/moderation/pending');
+  }
+
+  async approveModerationCourse(courseId: string, note?: string) {
+    return this.request<any>(`/moderation/${courseId}/approve`, {
+      method: 'POST',
+      body: JSON.stringify({ note }),
+    });
+  }
+
+  async rejectModerationCourse(courseId: string, reason: string) {
+    return this.request<any>(`/moderation/${courseId}/reject`, {
+      method: 'POST',
+      body: JSON.stringify({ reason }),
+    });
+  }
+
+  async deleteModerationCourse(courseId: string) {
+    return this.request<void>(`/moderation/${courseId}`, {
+      method: 'DELETE',
+    });
+  }
+
   // Search
   async searchCourses(query: string, filters?: { category?: string; difficulty?: string }) {
     const searchParams = new URLSearchParams({ q: query });