feat:sales_prospects 테이블에 business_card_image 컬럼 추가

명함 이미지 저장을 위한 컬럼 추가

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

database/migrations/2026_01_27_234500_add_business_card_image_to_sales_prospects_table.php

@@ -0,0 +1,29 @@
+<?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('sales_prospects', function (Blueprint $table) {
+            $table->string('business_card_image', 500)->nullable()->after('address')
+                ->comment('명함 이미지 파일 경로');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('sales_prospects', function (Blueprint $table) {
+            $table->dropColumn('business_card_image');
+        });
+    }
+};