feat:holidays 테이블 마이그레이션 생성

달력 휴일 관리를 위한 holidays 테이블 추가 (시작일/종료일, 유형, 반복 여부)

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

database/migrations/2026_02_05_700000_create_holidays_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
+{
+    public function up(): void
+    {
+        Schema::create('holidays', function (Blueprint $table) {
+            $table->id();
+            $table->unsignedBigInteger('tenant_id');
+            $table->date('start_date')->comment('시작일');
+            $table->date('end_date')->comment('종료일 (단일 휴일이면 start_date와 동일)');
+            $table->string('name', 100)->comment('휴일명');
+            $table->string('type', 30)->default('public')->comment('유형: public(공휴일), company(회사지정), etc');
+            $table->boolean('is_recurring')->default(false)->comment('매년 반복 여부');
+            $table->text('memo')->nullable()->comment('메모');
+            $table->unsignedBigInteger('created_by')->nullable();
+            $table->unsignedBigInteger('updated_by')->nullable();
+            $table->timestamps();
+            $table->softDeletes();
+
+            $table->index(['tenant_id', 'start_date']);
+            $table->index(['tenant_id', 'end_date']);
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('holidays');
+    }
+};