feat: tambah penanggung jawab divisi (leader_id) dari role pengurus

database/migrations/2026_04_05_152811_add_leader_id_to_divisions_table.php

@@ -0,0 +1,23 @@
+<?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::table('divisions', function (Blueprint $table) {
+            $table->foreignId('leader_id')->nullable()->constrained('users')->nullOnDelete()->after('description');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('divisions', function (Blueprint $table) {
+            $table->dropForeignIdFor(\App\Models\User::class, 'leader_id');
+            $table->dropColumn('leader_id');
+        });
+    }
+};