feat(vm): hoàn tiền khi cấp VM lỗi, theo dõi job queue, uuid dịch vụ cho ticket, chuẩn hoá RAM addon

- VmProvisionException/VmProvisionRefund xử lý lỗi cấp phát VM
- QueueJobInspector + QueueMonitorController xem chi tiết job
- Thêm service uuid cho ticket, thời lượng cho activity_logs
- Migration chuẩn hoá RAM addon sang MB, trạng thái deleting cho snapshot

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

database/migrations/2026_10_30_000001_add_service_uuid_to_ticket_table.php

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+<?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('ticket', function (Blueprint $table) {
+            $table->uuid('service_uuid')->nullable()->index()->after('customer_id');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('ticket', function (Blueprint $table) {
+            $table->dropColumn('service_uuid');
+        });
+    }
+};

database/migrations/2026_10_30_000002_normalize_ram_service_addons_to_mb.php

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+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Facades\DB;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        DB::table('service_addons')
+            ->where('addon_type', 'ram')
+            ->whereRaw('CAST(addon_value AS UNSIGNED) < 256')
+            ->update(['addon_value' => DB::raw('CAST(addon_value AS UNSIGNED) * 1024')]);
+
+        DB::table('module_vmware as m')
+            ->join('services as s', 's.vm_id', '=', 'm.id')
+            ->join('products as p', 'p.id', '=', 's.product_id')
+            ->whereNull('m.ram_mb')
+            ->update([
+                'm.cpu' => DB::raw('p.cpu'),
+                'm.ram_mb' => DB::raw('p.ram * 1024'),
+                'm.disk_gb' => DB::raw('p.disk'),
+            ]);
+    }
+
+    public function down(): void
+    {
+    }
+};

database/migrations/2026_10_30_000003_add_timing_to_activity_logs.php

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+<?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('activity_logs', function (Blueprint $table) {
+            $table->timestamp('started_at', 3)->nullable()->after('user_agent');
+            $table->timestamp('finished_at', 3)->nullable()->after('started_at');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::table('activity_logs', function (Blueprint $table) {
+            $table->dropColumn(['started_at', 'finished_at']);
+        });
+    }
+};

database/migrations/2026_10_30_000004_add_deleting_status_to_module_snapshot.php

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+<?php
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Support\Facades\DB;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        DB::statement("ALTER TABLE module_snapshot MODIFY status ENUM('pending','processing','success','failed','deleting') NOT NULL DEFAULT 'pending'");
+    }
+
+    public function down(): void
+    {
+        DB::table('module_snapshot')->where('status', 'deleting')->update(['status' => 'success']);
+        DB::statement("ALTER TABLE module_snapshot MODIFY status ENUM('pending','processing','success','failed') NOT NULL DEFAULT 'pending'");
+    }
+};