feat: 5130 레거시 마이그레이션 커맨드 및 관련 파일 추가

- Migrate5130Bom: 완제품 BOM 템플릿 마이그레이션 (61건)
- Migrate5130Orders: 주문 데이터 마이그레이션
- Migrate5130PriceItems: 품목 데이터 마이그레이션
- Verify5130Calculation: 견적 계산 검증 커맨드
- Legacy5130Calculator: 레거시 계산 헬퍼
- ContractFromBiddingRequest: 입찰→계약 전환 요청
- 마이그레이션: shipments.work_order_id, order_id_mappings 테이블

database/migrations/2026_01_19_155301_add_work_order_id_to_shipments_table.php

@@ -0,0 +1,34 @@
+<?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('shipments', function (Blueprint $table) {
+            $table->foreignId('work_order_id')
+                ->nullable()
+                ->after('order_id')
+                ->comment('작업지시 ID');
+
+            $table->index(['tenant_id', 'work_order_id']);
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('shipments', function (Blueprint $table) {
+            $table->dropIndex(['tenant_id', 'work_order_id']);
+            $table->dropColumn('work_order_id');
+        });
+    }
+};

database/migrations/2026_01_19_202830_create_order_id_mappings_table.php

@@ -0,0 +1,38 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    /**
+     * Run the migrations.
+     */
+    /**
+     * 5130 output.num → SAM orders.id 매핑 테이블
+     * 마이그레이션 추적 및 롤백을 위해 사용
+     */
+    public function up(): void
+    {
+        Schema::create('order_id_mappings', function (Blueprint $table) {
+            $table->id();
+            $table->bigInteger('source_num')->unsigned()->comment('5130 output.num');
+            $table->bigInteger('order_id')->unsigned()->comment('SAM orders.id');
+            $table->timestamps();
+
+            $table->unique('source_num');
+            $table->index('order_id');
+
+            $table->foreign('order_id')->references('id')->on('orders')->onDelete('cascade');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::dropIfExists('order_id_mappings');
+    }
+};