feat(form-builder): form_field_validation_rules table + polymorphic owner + scope + cascade

api/database/factories/FormBuilder/FormFieldFactory.php

@@ -7,8 +7,10 @@ namespace Database\Factories\FormBuilder;
 use App\Enums\FormBuilder\FormFieldBindingMode;
 use App\Enums\FormBuilder\FormFieldDisplayWidth;
 use App\Enums\FormBuilder\FormFieldType;
+use App\Enums\FormBuilder\FormFieldValidationRuleType;
 use App\Models\FormBuilder\FormField;
 use App\Models\FormBuilder\FormFieldBinding;
+use App\Models\FormBuilder\FormFieldValidationRule;
 use App\Models\FormBuilder\FormSchema;
 use Illuminate\Database\Eloquent\Factories\Factory;
 use Illuminate\Support\Str;
@@ -100,4 +102,21 @@ final class FormFieldFactory extends Factory
                 ->create();
         });
     }
+
+    /**
+     * Attach a validation-rule row in `form_field_validation_rules` after
+     * the field is persisted. Replaces populating the legacy
+     * `validation_rules` JSON column — which WS-5b commit 5 drops.
+     *
+     * @param  array<string, mixed>  $parameters
+     */
+    public function withValidationRule(FormFieldValidationRuleType $type, array $parameters): static
+    {
+        return $this->afterCreating(function (FormField $field) use ($type, $parameters): void {
+            FormFieldValidationRule::factory()
+                ->forField($field)
+                ->ofType($type, $parameters)
+                ->create();
+        });
+    }
 }