feat: Add admin navigation, fix modals, clickable stats, update docs

- Add admin dropdown menu in dashboard header with links to all admin pages
- Fix template modal: larger size (800px), responsive grid, type/priority dropdowns
- Fix recurring tickets modal: add Type and Assign To fields, larger size
- Make dashboard stat cards clickable for quick filtering
- Fix user-activity query (remove is_active requirement)
- Add table existence check in ticket_dependencies API
- Fix table overflow on dashboard
- Update Claude.md and README.md with current project status
- Remove migrations directory (all migrations completed)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

README.md

@@ -1,12 +1,14 @@
 # Tinker Tickets
 
-A feature-rich PHP-based ticketing system designed for tracking and managing data center infrastructure issues with enterprise-grade workflow management.
+A feature-rich PHP-based ticketing system designed for tracking and managing data center infrastructure issues with enterprise-grade workflow management and a retro terminal aesthetic.
 
 ## Core Features
 
 ### Dashboard & Ticket Management
 - **Smart Dashboard**: Sortable columns, advanced filtering by status/priority/category/type
+- **Stats Widgets**: Clickable cards for quick filtering (Open, Critical, Unassigned, Today's tickets)
 - **Full-Text Search**: Search across tickets, descriptions, and metadata
+- **Advanced Search**: Date ranges, priority ranges, user filters with saved filter support
 - **Ticket Assignment**: Assign tickets to specific users with quick-assign from dashboard
 - **Priority Tracking**: P1 (Critical) to P5 (Minimal Impact) with color-coded indicators
 - **Custom Categories**: Hardware, Software, Network, Security, General
@@ -57,14 +59,16 @@ A feature-rich PHP-based ticketing system designed for tracking and managing dat
 - **Bulk Status**: Change status for multiple tickets
 
 ### Admin Pages
+Access all admin pages via the **Admin dropdown** in the dashboard header.
+
 | Route | Description |
 |-------|-------------|
+| `/admin/templates` | Create and edit ticket templates |
+| `/admin/workflow` | Visual workflow transition designer |
 | `/admin/recurring-tickets` | Manage recurring ticket schedules |
 | `/admin/custom-fields` | Define custom fields per category |
-| `/admin/workflow` | Visual workflow transition designer |
-| `/admin/templates` | Create and edit ticket templates |
-| `/admin/audit-log` | Browse all audit log entries |
 | `/admin/user-activity` | View per-user activity statistics |
+| `/admin/audit-log` | Browse all audit log entries |
 
 ### Notifications
 - **Discord Integration**: Webhook notifications for ticket creation and updates
@@ -86,9 +90,10 @@ A feature-rich PHP-based ticketing system designed for tracking and managing dat
 - **Architecture**: MVC pattern with models, views, controllers
 
 ### Frontend
-- **HTML5/CSS3**: Semantic markup with modern CSS
+- **HTML5/CSS3**: Semantic markup with retro terminal styling
 - **JavaScript**: Vanilla JS with Fetch API for AJAX
 - **Markdown**: Custom markdown parser with toolbar
+- **Terminal UI**: Box-drawing characters, monospace fonts, CRT effects
 
 ### Database Tables
 | Table | Purpose |
@@ -137,7 +142,7 @@ DISCORD_WEBHOOK_URL=https://discord.com/api/webhooks/...
 
 ### 2. Database Setup
 
-The database schema is managed through migrations. For a fresh install, run all migrations in order using the migration runner.
+The database schema should already be configured. For a fresh install, contact the system administrator for database setup instructions.
 
 ### 3. Cron Jobs
 
@@ -188,7 +193,6 @@ tinker_tickets/
 ├── uploads/                # File upload storage
 ├── views/                  # View templates
 │   └── admin/              # Admin panel views
-├── migrations/             # Database migrations
 ├── index.php               # Main router
 └── .env                    # Environment configuration
 ```