feat: granular permissions, export backup, user/role management

- PermissionSeeder: 29 permissions with role mapping (admin/manager/staff)
- Policies updated to use hasPermissionTo() instead of hasRole()
- ExportBackup command: JSON per-table backup with chunk processing
- UserResource: CRUD users with role assignment (admin only)
- RoleResource: CRUD roles with permission assignment (admin only)
- UserPolicy + RolePolicy: admin-only access control
- ImportCskh: detailed skip logging with color in dry-run mode
- Widgets: permission-based visibility checks
- Tests: 8/8 pass (21 assertions)

app/Filament/Resources/Feedback/RelationManagers/InteractionsRelationManager.php

@@ -53,7 +53,7 @@ class InteractionsRelationManager extends RelationManager
 
                 Select::make('new_status')
                     ->label('New Status')
-                    ->options(fn (): array => auth()->user()->hasRole(['admin', 'manager'])
+                    ->options(fn (): array => auth()->user()->hasPermissionTo('close-ticket')
                         ? ['pending' => 'Pending', 'processing' => 'Processing', 'resolved' => 'Resolved', 'closed' => 'Closed']
                         : ['pending' => 'Pending', 'processing' => 'Processing', 'resolved' => 'Resolved'],
                     )