feat: single session per akun — login kedua ditolak jika sesi aktif, middleware SingleSession menendang sesi lain, logout membersihkan token, tombol Paksa Logout di manajemen user; 5 feature test

database/migrations/2026_08_03_102109_add_active_session_token_to_users.php

@@ -0,0 +1,28 @@
+<?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('users', function (Blueprint $table) {
+            $table->string('active_session_token', 191)->nullable()->after('phone');
+        });
+    }
+
+    /**
+     * Reverse the migrations.
+     */
+    public function down(): void
+    {
+        Schema::table('users', function (Blueprint $table) {
+            $table->dropColumn('active_session_token');
+        });
+    }
+};