feat: close stub-page gaps - profile login/logout, admin Reports/Settings, Help/Docs links

Sprint A: storefront header profile control (login/logout only, no menu),
wired to existing customer Telegram auth (AuthService).

Sprint B: backoffice/reports page, reuses AdminAnalyticsFacade (Sales,
Top Products, Marketplace Health cards + CSV export).

Sprint C: backoffice/settings page, admin UI density preference
(comfortable/compact), localStorage-persisted, applied to app-table
across all admin list pages.

Sprint D: admin bottom-nav Help -> mailto using existing supportEmail,
Documentation -> external link via new TenantConfig.documentationUrl.
AdminNavLink gains externalHref for non-routerLink nav entries.

Docs: docs/GLOBAL-SPRINT-PLAN.md tracks the full sprint breakdown.
docs/COMING-SOON-AUDIT.md removed, folded into docs/KNOWN-ISSUES.md.
docs/BACKEND.md updated with the new documentationUrl bootstrap field.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

src/app/app.routes.ts

@@ -254,6 +254,24 @@ const coreRoutes: Routes = [
           breadcrumb: [{ labelKey: 'adminShell.nav.analytics' }]
         }
       },
+      {
+        path: 'reports',
+        loadComponent: () => import('./features/admin/reports/pages/admin-reports-page.component').then(m => m.AdminReportsPageComponent),
+        data: {
+          titleKey: 'adminShell.pages.reports.title',
+          descriptionKey: 'adminShell.pages.reports.description',
+          breadcrumb: [{ labelKey: 'adminShell.nav.reports' }]
+        }
+      },
+      {
+        path: 'settings',
+        loadComponent: () => import('./features/admin/settings/pages/admin-settings-page.component').then(m => m.AdminSettingsPageComponent),
+        data: {
+          titleKey: 'adminShell.pages.settings.title',
+          descriptionKey: 'adminShell.pages.settings.description',
+          breadcrumb: [{ labelKey: 'adminShell.nav.settings' }]
+        }
+      },
       {
         path: 'partners/seller-management',
         loadComponent: () => import('./features/admin/seller-management/pages/admin-seller-management-page.component').then(m => m.AdminSellerManagementPageComponent),