Feature 3: Implement Status Transitions with Workflow Validation

Add comprehensive workflow management system for ticket status transitions:

- Created WorkflowModel.php for managing status transition rules
- Updated TicketController.php to load allowed transitions for each ticket
- Modified TicketView.php to display dynamic status dropdown with only allowed transitions
- Enhanced api/update_ticket.php with server-side workflow validation
- Added updateTicketStatus() JavaScript function for client-side status changes
- Included CSS styling for status select dropdown with color-coded states
- Transitions can require comments or admin privileges
- Status changes are validated against status_transitions table

This feature enforces proper ticket workflows and prevents invalid status changes.

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

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

controllers/TicketController.php

@@ -4,19 +4,22 @@ require_once dirname(__DIR__) . '/models/TicketModel.php';
 require_once dirname(__DIR__) . '/models/CommentModel.php';
 require_once dirname(__DIR__) . '/models/AuditLogModel.php';
 require_once dirname(__DIR__) . '/models/UserModel.php';
+require_once dirname(__DIR__) . '/models/WorkflowModel.php';
 
 class TicketController {
     private $ticketModel;
     private $commentModel;
     private $auditLogModel;
     private $userModel;
+    private $workflowModel;
     private $envVars;
-    
+
     public function __construct($conn) {
         $this->ticketModel = new TicketModel($conn);
         $this->commentModel = new CommentModel($conn);
         $this->auditLogModel = new AuditLogModel($conn);
         $this->userModel = new UserModel($conn);
+        $this->workflowModel = new WorkflowModel($conn);
         
         // Load environment variables for Discord webhook
         $envPath = dirname(__DIR__) . '/.env';
@@ -67,6 +70,9 @@ class TicketController {
         // Get all users for assignment dropdown
         $allUsers = $this->userModel->getAllUsers();
 
+        // Get allowed status transitions for this ticket
+        $allowedTransitions = $this->workflowModel->getAllowedTransitions($ticket['status']);
+
         // Load the view
         include dirname(__DIR__) . '/views/TicketView.php';
     }