feat: [approval] 연차사용촉진 통지서 1차/2차 양식 마이그레이션 추가

- leave_promotion_1st: 연차사용촉진 통지서 (1차) - hr 카테고리
- leave_promotion_2nd: 연차사용촉진 통지서 (2차) - hr 카테고리

database/migrations/2026_03_07_100000_add_leave_promotion_forms.php

@@ -0,0 +1,60 @@
+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Facades\DB;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        $tenants = DB::table('tenants')->whereNull('deleted_at')->pluck('id');
+
+        foreach ($tenants as $tenantId) {
+            // 1차 통지서
+            $exists1st = DB::table('approval_forms')
+                ->where('tenant_id', $tenantId)
+                ->where('code', 'leave_promotion_1st')
+                ->exists();
+
+            if (! $exists1st) {
+                DB::table('approval_forms')->insert([
+                    'tenant_id' => $tenantId,
+                    'name' => '연차사용촉진 통지서 (1차)',
+                    'code' => 'leave_promotion_1st',
+                    'category' => 'hr',
+                    'template' => '[]',
+                    'body_template' => '',
+                    'is_active' => true,
+                    'created_at' => now(),
+                    'updated_at' => now(),
+                ]);
+            }
+
+            // 2차 통지서
+            $exists2nd = DB::table('approval_forms')
+                ->where('tenant_id', $tenantId)
+                ->where('code', 'leave_promotion_2nd')
+                ->exists();
+
+            if (! $exists2nd) {
+                DB::table('approval_forms')->insert([
+                    'tenant_id' => $tenantId,
+                    'name' => '연차사용촉진 통지서 (2차)',
+                    'code' => 'leave_promotion_2nd',
+                    'category' => 'hr',
+                    'template' => '[]',
+                    'body_template' => '',
+                    'is_active' => true,
+                    'created_at' => now(),
+                    'updated_at' => now(),
+                ]);
+            }
+        }
+    }
+
+    public function down(): void
+    {
+        DB::table('approval_forms')->where('code', 'leave_promotion_1st')->delete();
+        DB::table('approval_forms')->where('code', 'leave_promotion_2nd')->delete();
+    }
+};