Edit Issue - .issue.db

Title *

Description

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.

Due Date (YYYY-MM-DD)

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Edit Issue #88