feat(helpdesk): add dashboards, communication feed, settings UI and fix routing

Add support/sales/controlling dashboards with KPIs, trend charts and
risk indicators. Add debitor communication timeline, contact filters,
system recommendations engine, and configurable controlling risk rules.

Rename search→index to fix query-string preservation on back navigation.
Remove fake escalation rate metric, add KPI info tooltips, and switch
trend chart colors to red (created) / green (closed) for clarity.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

modules/helpdesk/lib/Module/Helpdesk/HelpdeskContainerRegistrar.php

@@ -12,6 +12,7 @@ use MintyPHP\Module\Helpdesk\Service\DebitorSearchService;
 use MintyPHP\Module\Helpdesk\Service\HelpdeskOAuthTokenService;
 use MintyPHP\Module\Helpdesk\Service\HelpdeskSettingsGateway;
 use MintyPHP\Module\Helpdesk\Service\HelpdeskTokenRepository;
+use MintyPHP\Module\Helpdesk\Service\SystemRecommendationEngine;
 use MintyPHP\Module\Helpdesk\Service\TicketCommunicationService;
 use MintyPHP\Service\Access\PermissionService;
 use MintyPHP\Service\Settings\SettingServicesFactory;
@@ -65,5 +66,7 @@ final class HelpdeskContainerRegistrar implements ContainerRegistrar
             $c->get(BcSoapGateway::class),
             $c->get(BcODataGateway::class)
         ));
+
+        $container->set(SystemRecommendationEngine::class, static fn (): SystemRecommendationEngine => new SystemRecommendationEngine());
     }
 }