fix(help-center): resolve API docs visibility via layout provider

The api_docs.view ability was missing from layoutAuth after removing
the sidebar.admin_nav_item slot from the api-docs module. Add a
HelpCenterLayoutProvider that checks the ability via AuthorizationService
and provides the result in layout nav context (help-center.nav). Panel
template now reads can_view_api_docs from the provider instead of
layoutAuth.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

modules/help-center/lib/Module/HelpCenter/Providers/HelpCenterLayoutProvider.php

@@ -0,0 +1,29 @@
+<?php
+
+namespace MintyPHP\Module\HelpCenter\Providers;
+
+use MintyPHP\App\AppContainer;
+use MintyPHP\App\Module\Contracts\LayoutContextProvider;
+use MintyPHP\Service\Access\AuthorizationService;
+
+final class HelpCenterLayoutProvider implements LayoutContextProvider
+{
+    public function provide(array $session, AppContainer $container): array
+    {
+        $userId = (int) ($session['user']['id'] ?? 0);
+        if ($userId <= 0) {
+            return ['help-center.nav' => ['can_view_api_docs' => false]];
+        }
+
+        try {
+            $authService = $container->get(AuthorizationService::class);
+            $canViewApiDocs = $authService->authorize('api_docs.view', [
+                'actor_user_id' => $userId,
+            ])->isAllowed();
+        } catch (\Throwable) {
+            $canViewApiDocs = false;
+        }
+
+        return ['help-center.nav' => ['can_view_api_docs' => $canViewApiDocs]];
+    }
+}