Fix auto-withdraw deploy and accept POST on wallet settings route.

Drop the fragile column ordering in the migration and allow POST as well as PUT so the mobile clients can save auto-withdraw after deploy.

Co-authored-by: Cursor <cursoragent@cursor.com>

database/migrations/2026_06_12_120000_add_auto_withdraw_to_qr_settings_table.php

@@ -9,7 +9,7 @@ return new class extends Migration
     public function up(): void
     {
         Schema::table('qr_settings', function (Blueprint $table) {
-            $table->unsignedBigInteger('auto_withdraw_amount_minor')->nullable()->after('notify_payouts');
+            $table->unsignedBigInteger('auto_withdraw_amount_minor')->nullable();
         });
     }