Fix: Multiple UI and functionality improvements

Fixed all reported issues:

1. **Dark Mode Improvements:**
   - Fixed bulk-actions-info white on white text (now yellow on dark background)
   - Fixed timeline-content boxes with explicit dark mode colors
   - All text now properly visible in dark mode

2. **Dashboard Enhancement:**
   - Added "Assigned To" column showing ticket assignments
   - Updated TicketModel query to include assigned user information
   - Shows "Unassigned" when no user assigned

3. **Removed Ticket View Tracking:**
   - Removed logTicketView call from TicketController
   - Created migration 011 to delete all view records from audit_log
   - Viewing tickets no longer clutters activity timeline

4. **Removed Duplicate Status Dropdown:**
   - Removed status field from hamburger menu
   - Status can now only be changed via the workflow-validated dropdown in ticket header
   - Prevents confusion and ensures all status changes follow workflow rules

All changes improve usability and reduce clutter.

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

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

models/TicketModel.php

@@ -118,10 +118,13 @@ class TicketModel {
         
         // Get tickets with pagination and creator info
         $sql = "SELECT t.*,
-                u.username as creator_username,
-                u.display_name as creator_display_name
+                u_created.username as creator_username,
+                u_created.display_name as creator_display_name,
+                u_assigned.username as assigned_username,
+                u_assigned.display_name as assigned_display_name
                 FROM tickets t
-                LEFT JOIN users u ON t.created_by = u.user_id
+                LEFT JOIN users u_created ON t.created_by = u_created.user_id
+                LEFT JOIN users u_assigned ON t.assigned_to = u_assigned.user_id
                 $whereClause
                 ORDER BY $sortColumn $sortDirection
                 LIMIT ? OFFSET ?";