#88 UI: Admin Dashboard Page

Create Admin Dashboard overview page. Component: api/ui/templates/components/admin_dashboard/ Files: - admin_dashboard.html - admin_dashboard.css - admin_dashboard.js URL: #/admin Features: - Key Metrics Cards (top row): - Total Users (with trend arrow) - Active Sessions Now - Workflows This Month - API Calls Today - User Activity Chart: - Canvas-based line chart - Last 30 days activity - Daily active users - New signups - Recent Activity Feed: - Last 10 admin actions - User avatars - Action descriptions - Timestamps - View all link - Security Overview: - Failed logins last 24h - Suspended users count - Expiring tokens soon - Sessions from new IPs - Quick Actions: - Invite User button - Generate Token button - View Audit Logs button - Security Settings button - System Health (if system_admin): - Worker status - Queue depth - Database connections With ultra attention to details and correctness. Before closing: write comment summarizing implementation with screenshot.