Complete admin dashboard implementation with comprehensive features

🚀 Major Update: v2.0.0 - Complete Administrative Dashboard

## Phase 1: Dashboard Overview & Authentication ✅
- Secure admin authentication with JWT tokens
- Beautiful overview dashboard with key metrics
- Role-based access control (admin, moderator permissions)
- Professional MUI design with responsive layout

## Phase 2: User Management & Content Moderation ✅
- Complete user management with advanced data grid
- Prayer request content moderation system
- User actions: view, suspend, activate, promote, delete
- Content approval/rejection workflows

## Phase 3: Analytics Dashboard ✅
- Comprehensive analytics with interactive charts (Recharts)
- User activity analytics with retention tracking
- Content engagement metrics and trends
- Real-time statistics and performance monitoring

## Phase 4: Chat Monitoring & System Administration ✅
- Advanced conversation monitoring with content analysis
- System health monitoring and backup management
- Security oversight and automated alerts
- Complete administrative control panel

## Key Features Added:
✅ **32 new API endpoints** for complete admin functionality
✅ **Material-UI DataGrid** with advanced filtering and pagination
✅ **Interactive Charts** using Recharts library
✅ **Real-time Monitoring** with auto-refresh capabilities
✅ **System Health Dashboard** with performance metrics
✅ **Database Backup System** with automated scheduling
✅ **Content Filtering** with automated moderation alerts
✅ **Role-based Permissions** with granular access control
✅ **Professional UI/UX** with consistent MUI design
✅ **Visit Website Button** in admin header for easy navigation

## Technical Implementation:
- **Frontend**: Material-UI components with responsive design
- **Backend**: 32 new API routes with proper authentication
- **Database**: Optimized queries with proper indexing
- **Security**: Admin-specific JWT authentication
- **Performance**: Efficient data loading with pagination
- **Charts**: Interactive visualizations with Recharts

The Biblical Guide application now provides world-class administrative capabilities for complete platform management!

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

app/api/admin/stats/overview/route.ts

@@ -0,0 +1,143 @@
+import { NextResponse } from 'next/server';
+import { prisma } from '@/lib/db';
+import { getCurrentAdmin } from '@/lib/admin-auth';
+
+export const runtime = 'nodejs';
+
+export async function GET() {
+  try {
+    const admin = await getCurrentAdmin();
+    if (!admin) {
+      return NextResponse.json(
+        { error: 'Unauthorized' },
+        { status: 401 }
+      );
+    }
+
+    // Get date ranges
+    const now = new Date();
+    const today = new Date(now.getFullYear(), now.getMonth(), now.getDate());
+    const yesterday = new Date(today.getTime() - 24 * 60 * 60 * 1000);
+    const lastWeek = new Date(today.getTime() - 7 * 24 * 60 * 60 * 1000);
+
+    // Parallel queries for better performance
+    const [
+      totalUsers,
+      usersToday,
+      usersYesterday,
+      dailyActiveUsers,
+      conversationsToday,
+      conversationsYesterday,
+      prayerRequestsToday,
+      prayerRequestsYesterday,
+      totalConversations,
+      totalPrayerRequests
+    ] = await Promise.all([
+      // Total users
+      prisma.user.count(),
+
+      // Users created today
+      prisma.user.count({
+        where: {
+          createdAt: {
+            gte: today
+          }
+        }
+      }),
+
+      // Users created yesterday
+      prisma.user.count({
+        where: {
+          createdAt: {
+            gte: yesterday,
+            lt: today
+          }
+        }
+      }),
+
+      // Daily active users (logged in today)
+      prisma.user.count({
+        where: {
+          lastLoginAt: {
+            gte: today
+          }
+        }
+      }),
+
+      // AI conversations today
+      prisma.chatConversation.count({
+        where: {
+          createdAt: {
+            gte: today
+          }
+        }
+      }),
+
+      // AI conversations yesterday
+      prisma.chatConversation.count({
+        where: {
+          createdAt: {
+            gte: yesterday,
+            lt: today
+          }
+        }
+      }),
+
+      // Prayer requests today
+      prisma.prayerRequest.count({
+        where: {
+          createdAt: {
+            gte: today
+          }
+        }
+      }),
+
+      // Prayer requests yesterday
+      prisma.prayerRequest.count({
+        where: {
+          createdAt: {
+            gte: yesterday,
+            lt: today
+          }
+        }
+      }),
+
+      // Total conversations
+      prisma.chatConversation.count(),
+
+      // Total prayer requests
+      prisma.prayerRequest.count()
+    ]);
+
+    // Calculate percentage changes
+    const calculateChange = (today: number, yesterday: number) => {
+      if (yesterday === 0) return today > 0 ? 100 : 0;
+      return Math.round(((today - yesterday) / yesterday) * 100);
+    };
+
+    const userGrowthChange = calculateChange(usersToday, usersYesterday);
+    const conversationChange = calculateChange(conversationsToday, conversationsYesterday);
+    const prayerChange = calculateChange(prayerRequestsToday, prayerRequestsYesterday);
+
+    return NextResponse.json({
+      totalUsers,
+      dailyActiveUsers,
+      conversationsToday,
+      prayerRequestsToday,
+      userGrowthChange,
+      conversationChange,
+      prayerChange,
+      totalConversations,
+      totalPrayerRequests,
+      usersToday,
+      usersYesterday
+    });
+
+  } catch (error) {
+    console.error('Admin overview stats error:', error);
+    return NextResponse.json(
+      { error: 'Server error' },
+      { status: 500 }
+    );
+  }
+}