Feature: #107791 - Reports module uses native submodule overview 

Description 

The Reports module has been refactored to use TYPO3's native submodule system with the showSubmoduleOverview feature instead of a custom report registration mechanism. This provides a more consistent user experience and aligns the Reports module with other TYPO3 backend modules.

The module now displays a card-based overview of available reports, similar to other modules like the Web > Info module. Each report is registered as a proper backend submodule in Configuration/Backend/Modules.php.

Changes 

Module structure:

• System > Reports is now a container module with showSubmoduleOverview enabled
• Individual reports (Status, Record Statistics) are registered as submodules
• The native submodule overview automatically provides cards with icons, titles, and descriptions

Benefits:

• Automatic "Module Overview" menu item in the submodule dropdown
• Consistent navigation experience across all TYPO3 backend modules
• Simpler architecture without custom registration infrastructure
• Easier to extend - just add submodules to Modules.php

Example 

Creating a custom report is now as simple as registering a backend submodule:

return [
    'system_reports_myreport' => [
        'parent' => 'system_reports',
        'access' => 'admin',
        'path' => '/module/system/reports/myreport',
        'iconIdentifier' => 'my-report-icon',
        'labels' => [
            'title' => 'LLL:EXT:my_extension/Resources/Private/Language/locallang.xlf:myreport.title',
            'description' => 'LLL:EXT:my_extension/Resources/Private/Language/locallang.xlf:myreport.description',
        ],
        'routes' => [
            '_default' => [
                'target' => \Vendor\MyExtension\Controller\MyReportController::class . '::handleRequest',
            ],
        ],
    ],
];

The controller returns a standard PSR-7 response with rendered content:

#[AsController]
final readonly class MyReportController
{
    public function __construct(
        protected ModuleTemplateFactory $moduleTemplateFactory,
    ) {}

    public function handleRequest(ServerRequestInterface $request): ResponseInterface
    {
        $view = $this->moduleTemplateFactory->create($request);
        $view->assign('data', $this->collectReportData());
        return $view->renderResponse('MyReport');
    }
}

Impact 

The Reports module provides a cleaner, more intuitive interface using the standard TYPO3 module navigation patterns. Extension developers can now create custom reports using familiar backend module registration instead of implementing specific interfaces.