feat(api): archived_records 테이블에 batch 필드 추가

- batch_id (uuid): 일괄 삭제 작업 그룹 식별자
- batch_description (string): 작업 설명 (예: 테넌트 ABC 삭제)
- batch_id 인덱스 추가

database/migrations/2025_11_26_230719_add_batch_fields_to_archived_records_table.php

@@ -0,0 +1,32 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    public function up(): void
+    {
+        Schema::table('archived_records', function (Blueprint $table) {
+            $table->uuid('batch_id')->nullable()->after('id')->comment('일괄 작업 ID');
+            $table->string('batch_description')->nullable()->after('batch_id')->comment('작업 요약 (예: 테넌트 ABC 삭제)');
+
+            $table->index('batch_id');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('archived_records', function (Blueprint $table) {
+            $table->dropIndex(['batch_id']);
+            $table->dropColumn(['batch_id', 'batch_description']);
+        });
+    }
+};