feat: upgrade filament to v4 and ensure 100% test coverage

- Upgrade Filament framework from v3 to v4
   - Update all Filament resources and pages for v4 compatibility
   - Fix test suite to maintain 100% pass rate (321 tests passing)
   - Add visibility condition for ticket close action (only when not closed)
   - Update dependencies and build assets for new Filament version
   - Maintain backward compatibility while leveraging v4 improvements

app/Models/Ticket.php

@@ -2,6 +2,7 @@
 
 namespace App\Models;
 
+use Exception;
 use Carbon\Carbon;
 use Illuminate\Database\Eloquent\Factories\HasFactory;
 use Illuminate\Database\Eloquent\Model;
@@ -61,7 +62,7 @@ class Ticket extends Model
                 }
             }
             return true;
-        } catch (\Exception $e) {
+        } catch (Exception $e) {
             return false;
         }