refactor: Code cleanup and documentation updates

Bug fixes:
- Fix ticket ID extraction using URLSearchParams instead of split()
- Add error handling for query result in get_users.php
- Make Discord webhook URLs dynamic (use HTTP_HOST)

Code cleanup:
- Remove debug console.log statements from dashboard.js and ticket.js
- Add getTicketIdFromUrl() helper function to both JS files

Documentation:
- Update Claude.md: fix web server (nginx not Apache), add new notes
- Update README.md: add keyboard shortcuts, update setup instructions

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

README.md

@@ -88,8 +88,18 @@ Access all admin pages via the **Admin dropdown** in the dashboard header.
 | `/admin/api-keys` | Generate and manage API keys |
 
 ### Notifications
-- **Discord Integration**: Webhook notifications for ticket creation
+- **Discord Integration**: Webhook notifications for ticket creation and updates
 - **Rich Embeds**: Color-coded priority indicators and ticket links
+- **Dynamic URLs**: Ticket links adapt to the server hostname
+
+### Keyboard Shortcuts
+| Shortcut | Action |
+|----------|--------|
+| `Ctrl/Cmd + E` | Toggle edit mode (ticket page) |
+| `Ctrl/Cmd + S` | Save changes (ticket page) |
+| `Ctrl/Cmd + K` | Focus search box (dashboard) |
+| `ESC` | Cancel edit / close modal |
+| `?` | Show keyboard shortcuts help |
 
 ### Security Features
 - **CSRF Protection**: Token-based protection on all forms
@@ -150,13 +160,20 @@ Access all admin pages via the **Admin dropdown** in the dashboard header.
 
 ### 1. Environment Configuration
 
-Create `.env` file in project root:
+Copy the example file and edit with your values:
+```bash
+cp .env.example .env
+nano .env
+```
+
+Required environment variables:
 ```env
 DB_HOST=10.10.10.50
 DB_USER=tinkertickets
 DB_PASS=your_password
 DB_NAME=ticketing_system
 DISCORD_WEBHOOK_URL=https://discord.com/api/webhooks/...
+TIMEZONE=America/New_York
 ```
 
 ### 2. Cron Jobs