fix : 컨트롤러 검증 → FormRequest 분리

app/Http/Requests/Design/ModelVersion/CreateDraftRequest.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace App\Http\Requests\Design\ModelVersion;
+
+use Illuminate\Foundation\Http\FormRequest;
+
+class CreateDraftRequest extends FormRequest
+{
+    public function authorize(): bool
+    {
+        return true;
+    }
+
+    public function rules(): array
+    {
+        return [
+            'version_no' => 'nullable|integer|min:1',
+            'notes' => 'nullable|string',
+            'effective_from' => 'nullable|date',
+            'effective_to' => 'nullable|date|after_or_equal:effective_from',
+        ];
+    }
+
+    public function messages(): array
+    {
+        return [
+            'effective_to.after_or_equal' => __('validation.after_or_equal', ['attribute' => 'effective_to', 'date' => 'effective_from']),
+        ];
+    }
+}