feat: Implement payment method fields, refactor order creation logic to support detailed order items and VM provisioning, and add admin notifications.

database/migrations/2026_03_11_000001_add_payment_method_to_invoice_and_order_tables.php

@@ -0,0 +1,31 @@
+<?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('invoice', function (Blueprint $table) {
+            $table->string('payment_method')->nullable()->after('status');
+        });
+
+        Schema::table('order', function (Blueprint $table) {
+            if (!Schema::hasColumn('order', 'payment_method')) {
+                $table->string('payment_method')->nullable()->after('status');
+            }
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('invoice', function (Blueprint $table) {
+            $table->dropColumn('payment_method');
+        });
+
+        Schema::table('order', function (Blueprint $table) {
+            $table->dropColumn('payment_method');
+        });
+    }
+};