Schema::table('users', function (Blueprint $table) {
    $table->string('phone_number')->unique()->nullable();
    $table->string('imei')->unique()->nullable();
    $table->enum('status', ['active', 'blocked', 'banned', 'suspended'])->default('active');
    $table->timestamp('trial_expires_at')->nullable();
    $table->boolean('is_trial')->default(false);
});