feat: include CompanyUser in sandbox:sync for structural consistency

Even though CompanyUser is pinned to production via getConnectionName(),
keeping company_users mirrored in sandbox ensures the sandbox DB stays
structurally consistent for raw SQL queries, reporting tools, and any
future code that may bypass the model layer.

Author: Ronald A Richardson

src/Console/Commands/SyncSandbox.php

@@ -56,10 +56,13 @@ public function handle()
             DB::connection('sandbox')
                 ->table('api_credentials')
                 ->truncate();
+            DB::connection('sandbox')
+                ->table('company_users')
+                ->truncate();
         }
 
         // Models that need to be synced from Production to Sandbox
-        $syncable = [\Fleetbase\Models\User::class, \Fleetbase\Models\Company::class, \Fleetbase\Models\ApiCredential::class];
+        $syncable = [\Fleetbase\Models\User::class, \Fleetbase\Models\Company::class, \Fleetbase\Models\CompanyUser::class, \Fleetbase\Models\ApiCredential::class];
 
         // Sync each syncable data model
         foreach ($syncable as $model) {