feat: AfterSales CRM - SOP compliant real-estate customer care system

- Departments + cross-department transfer workflow
- Role-based closing (staff→resolved, manager→closed) with proof_of_resolution
- Private file storage with collection system + temporary signed URLs
- Dashboard: resolved tickets table, stats, handler performance bar chart
- Spatie RBAC (admin/manager/staff)
- Notifications: TicketTransferred, TicketClosed (database + mail)
- Pest tests: 8 tests, 21 assertions
- Docker production-ready (Dockerfile + compose + entrypoint)

app/Filament/Resources/Customers/CustomerResource.php

@@ -0,0 +1,58 @@
+<?php
+
+namespace App\Filament\Resources\Customers;
+
+use App\Filament\Resources\Customers\Pages\CreateCustomer;
+use App\Filament\Resources\Customers\Pages\EditCustomer;
+use App\Filament\Resources\Customers\Pages\ListCustomers;
+use App\Filament\Resources\Customers\RelationManagers\FeedbacksRelationManager;
+use App\Filament\Resources\Customers\Schemas\CustomerForm;
+use App\Filament\Resources\Customers\Tables\CustomersTable;
+use App\Models\Customer;
+use BackedEnum;
+use Filament\Resources\Resource;
+use Filament\Schemas\Schema;
+use Filament\Support\Icons\Heroicon;
+use Filament\Tables\Table;
+
+class CustomerResource extends Resource
+{
+    protected static ?string $model = Customer::class;
+
+    protected static string|BackedEnum|null $navigationIcon = Heroicon::OutlinedUserGroup;
+
+    protected static ?string $pluralLabel = 'Customers';
+
+    protected static ?int $navigationSort = 2;
+
+    public static function getNavigationGroup(): ?string
+    {
+        return 'Management';
+    }
+
+    public static function form(Schema $schema): Schema
+    {
+        return CustomerForm::configure($schema);
+    }
+
+    public static function table(Table $table): Table
+    {
+        return CustomersTable::configure($table);
+    }
+
+    public static function getRelations(): array
+    {
+        return [
+            FeedbacksRelationManager::class,
+        ];
+    }
+
+    public static function getPages(): array
+    {
+        return [
+            'index' => ListCustomers::route('/'),
+            'create' => CreateCustomer::route('/create'),
+            'edit' => EditCustomer::route('/{record}/edit'),
+        ];
+    }
+}