feat(clients): scaffold top-level Clients section with sub-nav around Accounts

frontend/src/App.tsx

@@ -1,5 +1,5 @@
 import { useEffect, useState } from 'react';
-import { BrowserRouter as Router, Routes, Route, Navigate } from 'react-router-dom';
+import { BrowserRouter as Router, Routes, Route, Navigate, useParams } from 'react-router-dom';
 import { QueryClient, QueryClientProvider } from '@tanstack/react-query';
 import { ToastContainer } from 'react-toastify';
 import 'react-toastify/dist/ReactToastify.css';
@@ -40,6 +40,7 @@ import {
 } from './pages/customer';
 import { CustomerAuthProvider } from './contexts/CustomerAuthContext';
 import { AdminLayout, AdminAuthWrapper } from './components/admin';
+import { ClientsLayout } from './components/admin/ClientsLayout';
 import { RequireFeature } from './components/admin/RequireFeature';
 import { PageErrorBoundary, OfflineIndicator, SkipLink, DynamicFavicon, RobotsMetaTags, CMSContentBlock } from './components/common';
 import { MaintenanceWrapper } from './components/MaintenanceWrapper';
@@ -90,6 +91,17 @@ function AnalyticsBootstrap() {
   return null;
 }
 
+/**
+ * Backward-compat redirect for /admin/customers/:id → /admin/clients/accounts/:id.
+ * Needed because <Navigate to="..."> can't interpolate route params and we
+ * want stale bookmarks / email links to keep working after the Clients
+ * section reorg.
+ */
+function RedirectCustomerDetail() {
+  const { id } = useParams();
+  return <Navigate to={`/admin/clients/accounts/${id}`} replace />;
+}
+
 function App() {
   // Track dark mode for toast theming
   const [toastTheme, setToastTheme] = useState<'light' | 'dark'>('light');
@@ -146,14 +158,37 @@ function App() {
                       <Route element={<RequireFeature flag="userManagement" />}>
                         <Route path="users" element={<UserManagementPage />} />
                       </Route>
-                      {/* Customer accounts (#354) — admin-side management.
-                          Hidden from sidebar + redirected away when the
-                          customerPortal flag is off. */}
-                      <Route element={<RequireFeature flag="customerPortal" />}>
-                        <Route path="customers" element={<CustomerManagementPage />} />
-                        <Route path="customers/:id" element={<CustomerDetailPage />} />
+                      {/* Clients section (#354 follow-up). Parent route
+                          gated by the top-level `clients` flag — when off
+                          the sidebar entry is hidden and every /admin/clients/*
+                          URL redirects to /admin/dashboard. Inside, the
+                          ClientsLayout renders a Settings-style sub-nav
+                          and the active sub-feature's page through an
+                          Outlet. Each sub-route is feature-flagged
+                          independently. */}
+                      <Route element={<RequireFeature flag="clients" />}>
+                        <Route path="clients" element={<ClientsLayout />}>
+                          <Route element={<RequireFeature flag="customerPortal" />}>
+                            <Route path="accounts" element={<CustomerManagementPage />} />
+                            <Route path="accounts/:id" element={<CustomerDetailPage />} />
+                          </Route>
+                          {/* Default: send /admin/clients (no sub-path) to
+                              the first available sub-feature. Today that's
+                              always accounts; when calendar/quotes ship they
+                              get their own routes here and the empty-state
+                              in ClientsLayout handles the rare "parent on,
+                              all children off" case. */}
+                          <Route index element={<Navigate to="/admin/clients/accounts" replace />} />
+                        </Route>
                       </Route>
 
+                      {/* Old /admin/customers paths now live under
+                          /admin/clients/accounts. Kept indefinitely as
+                          redirects so existing bookmarks and email links
+                          don't 404. */}
+                      <Route path="customers"     element={<Navigate to="/admin/clients/accounts" replace />} />
+                      <Route path="customers/:id" element={<RedirectCustomerDetail />} />
+
                       <Route path="settings" element={<SettingsPage />} />
                       <Route path="webhooks/:id/deliveries" element={<WebhookDeliveriesPage />} />
 

frontend/src/components/admin/AdminSidebar.tsx

@@ -8,7 +8,7 @@ import {
   Settings,
   X,
   Users,
-  UserCog,
+  Briefcase,
 } from 'lucide-react';
 import { useQuery } from '@tanstack/react-query';
 import { useTranslation } from 'react-i18next';
@@ -27,7 +27,15 @@ interface NavItem {
   href: string;
   icon: React.ComponentType<{ className?: string }>;
   permission?: string | false;
+  /** Single required flag — entry hidden when this is false. */
   featureFlag?: FeatureKey;
+  /**
+   * "At least one of these must be on" — used by the Clients section
+   * to hide the sidebar entry when the parent flag is on but no
+   * child sub-feature is enabled. Empty arrays are treated as no
+   * constraint.
+   */
+  featureFlagsAny?: FeatureKey[];
 }
 
 // Sidebar shape after the Settings reorg (#feature-flags-settings-reorg).
@@ -47,12 +55,30 @@ const navigation: NavItem[] = [
   { nameKey: 'admin.analytics',      href: '/admin/analytics', icon: BarChart3,       permission: 'analytics.view', featureFlag: 'analytics' },
   { nameKey: 'navigation.settings',  href: '/admin/settings',  icon: Settings,        permission: 'settings.view' },
   { nameKey: 'navigation.users',     href: '/admin/users',     icon: Users,           permission: 'users.view',     featureFlag: 'userManagement' },
-  // Customer accounts (#354) — separate from admin users (#users.view)
-  // by design: customers log in at /customer/login with their own
-  // cookie + token type. Hidden when the customerPortal feature flag
-  // is OFF (Settings → Features). The corresponding /customer/* routes
-  // also redirect away in that case (see RequireFeature in App.tsx).
-  { nameKey: 'navigation.customers', href: '/admin/customers', icon: UserCog,         permission: 'customers.view', featureFlag: 'customerPortal' },
+  // Clients section (#354 follow-up) — admin-side surface for the
+  // CRM-area sub-features. Today this entry leads to /admin/clients
+  // which renders a Settings-style sub-nav with one item (Accounts).
+  // When calendar / quotes / bills / messaging ship they slot in as
+  // additional sub-nav items inside ClientsLayout without needing
+  // their own top-level sidebar entry.
+  //
+  // Gate uses the parent `clients` flag (master). The Accounts page
+  // itself is independently gated by `customerPortal` inside the
+  // route tree — that nested check is invisible from here.
+  //
+  // `permission: 'customers.view'` is the only Clients-area
+  // permission today; future sub-features (booking, billing) get
+  // their own permission keys and the gate here grows into an OR.
+  {
+    nameKey: 'navigation.clients', href: '/admin/clients', icon: Briefcase,
+    permission: 'customers.view',
+    featureFlag: 'clients',
+    // Hide the entry when the parent is on but no sub-feature is —
+    // there's nothing inside ClientsLayout to link to. Add future
+    // sub-flags (calendar, quotes, bills, messaging) here as they
+    // ship; the entry reappears the moment any of them is enabled.
+    featureFlagsAny: ['customerPortal'],
+  },
 ];
 
 export const AdminSidebar: React.FC<AdminSidebarProps> = ({ isOpen, onClose }) => {
@@ -64,6 +90,14 @@ export const AdminSidebar: React.FC<AdminSidebarProps> = ({ isOpen, onClose }) =
   const filteredNavigation = navigation.filter((item) => {
     if (item.permission && !hasPermission(item.permission as string)) return false;
     if (item.featureFlag && !flags[item.featureFlag]) return false;
+    // featureFlagsAny: entry is hidden when none of the listed
+    // sub-flags are on, even if the parent flag IS on. Used by
+    // the Clients section so the sidebar entry only appears when
+    // there's at least one sub-feature it can link to.
+    if (item.featureFlagsAny && item.featureFlagsAny.length > 0
+        && !item.featureFlagsAny.some((k) => flags[k])) {
+      return false;
+    }
     return true;
   });
 

frontend/src/components/admin/ClientsLayout.tsx

@@ -0,0 +1,164 @@
+/**
+ * Clients section layout (#354 follow-up).
+ *
+ * Wraps /admin/clients/* routes with a Settings-style left sub-nav.
+ * Today the only sub-nav entry is "Accounts" — when calendar / quotes
+ * / bills / messaging ship they get added to `navItems` below and
+ * mounted as nested routes in App.tsx. No placeholder UI; absent
+ * entries simply don't render.
+ *
+ * Visual pattern intentionally mirrors SettingsPage: 220px left rail
+ * on desktop, native <select> on mobile, accent-dark pill for the
+ * active item with white icon + label.
+ */
+import React from 'react';
+import { NavLink, Outlet, useLocation, useNavigate } from 'react-router-dom';
+import { useTranslation } from 'react-i18next';
+import { Briefcase, UserCog } from 'lucide-react';
+import type { LucideIcon } from 'lucide-react';
+import { useFeatureFlags, type FeatureKey } from '../../contexts/FeatureFlagsContext';
+
+interface NavItem {
+  key: string;
+  to: string;
+  label: string;
+  icon: LucideIcon;
+  /**
+   * Feature flag that must be ON for this entry to render. The
+   * parent `clients` flag has already been verified by the
+   * RequireFeature gate around this layout, so children only need
+   * to declare their own sub-flag here.
+   */
+  featureFlag: FeatureKey;
+}
+
+export const ClientsLayout: React.FC = () => {
+  const { t } = useTranslation();
+  const location = useLocation();
+  const navigate = useNavigate();
+  const { flags } = useFeatureFlags();
+
+  const navItems: NavItem[] = [
+    {
+      key: 'accounts',
+      to: '/admin/clients/accounts',
+      label: t('clients.subnav.accounts', 'Accounts'),
+      icon: UserCog,
+      featureFlag: 'customerPortal',
+    },
+    // Add future sub-features here as they ship:
+    //   { key: 'calendar', to: '/admin/clients/calendar', ... featureFlag: 'calendar' }
+    //   { key: 'quotes',   to: '/admin/clients/quotes',   ... featureFlag: 'quotes'   }
+    //   { key: 'bills',    to: '/admin/clients/bills',    ... featureFlag: 'bills'    }
+    //   etc. The empty-state below disappears automatically once any of
+    //   these is enabled.
+  ];
+
+  const enabledItems = navItems.filter((item) => flags[item.featureFlag]);
+
+  // When the parent `clients` flag is on but no sub-feature is enabled,
+  // there's nothing to render. Settings → Features is one click away
+  // and tells the admin exactly what to flip on.
+  if (enabledItems.length === 0) {
+    return (
+      <div>
+        <div className="mb-6">
+          <h1 className="text-2xl font-bold text-neutral-900 dark:text-neutral-100">
+            {t('clients.title', 'Clients')}
+          </h1>
+          <p className="text-neutral-600 dark:text-neutral-400 mt-1">
+            {t('clients.subtitle', 'Customer accounts, scheduling, quotes and billing for recurring clients.')}
+          </p>
+        </div>
+
+        <div className="rounded-xl border border-dashed border-neutral-300 dark:border-neutral-700 bg-neutral-50 dark:bg-neutral-900 p-8 text-center">
+          <Briefcase className="w-10 h-10 mx-auto mb-3 text-neutral-400" />
+          <h2 className="text-lg font-semibold text-neutral-900 dark:text-neutral-100 mb-1">
+            {t('clients.empty.title', 'No client features enabled')}
+          </h2>
+          <p className="text-sm text-neutral-600 dark:text-neutral-400">
+            {t(
+              'clients.empty.body',
+              'Enable Accounts (or another Clients sub-feature) under Settings → Features to get started.',
+            )}
+          </p>
+        </div>
+      </div>
+    );
+  }
+
+  return (
+    <div>
+      <div className="mb-6">
+        <h1 className="text-2xl font-bold text-neutral-900 dark:text-neutral-100">
+          {t('clients.title', 'Clients')}
+        </h1>
+        <p className="text-neutral-600 dark:text-neutral-400 mt-1">
+          {t('clients.subtitle', 'Customer accounts, scheduling, quotes and billing for recurring clients.')}
+        </p>
+      </div>
+
+      <div className="grid grid-cols-1 lg:grid-cols-[220px_1fr] gap-6 lg:gap-8">
+        {/* Mobile: native select dropdown — keeps every option reachable
+           in one tap on touch devices, no horizontal scroll. */}
+        <div className="lg:hidden">
+          <label htmlFor="clients-section" className="sr-only">
+            {t('clients.navAriaLabel', 'Clients navigation')}
+          </label>
+          <select
+            id="clients-section"
+            value={location.pathname}
+            onChange={(e) => navigate(e.target.value)}
+            className="w-full rounded-md border border-neutral-300 dark:border-neutral-600 bg-white dark:bg-neutral-800 px-3 py-2 text-sm font-medium text-neutral-900 dark:text-neutral-100 focus:outline-none focus:ring-2 focus:ring-primary-500"
+          >
+            {enabledItems.map((item) => (
+              <option key={item.key} value={item.to}>{item.label}</option>
+            ))}
+          </select>
+        </div>
+
+        {/* Desktop: sticky left rail */}
+        <aside className="hidden lg:block">
+          <nav
+            aria-label={t('clients.navAriaLabel', 'Clients navigation')}
+            className="sticky top-6 space-y-1"
+          >
+            {enabledItems.map((item) => {
+              const Icon = item.icon;
+              return (
+                <NavLink
+                  key={item.key}
+                  to={item.to}
+                  className={({ isActive }) =>
+                    `group w-full flex items-center gap-2.5 px-3 py-2 rounded-md text-sm font-medium transition-colors ${
+                      isActive
+                        ? 'bg-accent-dark text-white'
+                        : 'text-neutral-700 dark:text-neutral-300 hover:bg-neutral-100 dark:hover:bg-neutral-800'
+                    }`
+                  }
+                >
+                  {({ isActive }) => (
+                    <>
+                      <Icon
+                        className={`w-4 h-4 flex-shrink-0 ${
+                          isActive
+                            ? 'text-white'
+                            : 'text-neutral-500 dark:text-neutral-400 group-hover:text-neutral-700 dark:group-hover:text-neutral-200'
+                        }`}
+                      />
+                      <span className="truncate">{item.label}</span>
+                    </>
+                  )}
+                </NavLink>
+              );
+            })}
+          </nav>
+        </aside>
+
+        <div className="min-w-0">
+          <Outlet />
+        </div>
+      </div>
+    </div>
+  );
+};

frontend/src/contexts/FeatureFlagsContext.tsx

@@ -19,11 +19,14 @@ export const DEFAULT_FLAGS: FeatureFlags = {
   messaging: false,
   analytics: true,
   userManagement: true,
-  // Customer portal (#354) defaults OFF on a fresh install — picpeak
+  // Top-level Clients section (#354 follow-up). Migration 097 mirrors
+  // the install's current customerPortal value so admins who already
+  // had the portal enabled keep seeing the section after upgrade.
+  clients: false,
+  // Customer portal (#354). Defaults OFF on a fresh install — picpeak
   // ships as a focused gallery delivery tool, recurring-customer
-  // logins are opt-in. Migration 094 flips this to TRUE on existing
-  // installs (events>0) so the customer-portal foundation isn't
-  // silently disabled mid-deployment.
+  // logins are opt-in. Migration 095 flips this to TRUE on existing
+  // installs (events>0).
   customerPortal: false,
 };
 
@@ -56,13 +59,15 @@ function applyDependencyRules(flags: FeatureFlags): FeatureFlags {
   out.galleries = true;                            // foundation — always on
   if (out.quotes === false) out.bills = false;     // bills depend on quotes
   if (out.calendar === false) out.calendarBooking = false;  // booking depends on calendar
-  // Customer-portal-dependent flags: if the customer portal is OFF the
-  // customer-side dashboard never renders, so the calendar/quotes/bills/
-  // messaging customer-side surfaces have nowhere to live. Their server
-  // toggles can stay at whatever the admin set (so re-enabling the
-  // portal restores the previous state), but the dependency is
-  // documented here for the FeaturesTab UI to disable child cards
-  // visually when customerPortal is off.
+  // Clients parent flag is DERIVED from its children. Admins don't
+  // toggle it directly — enabling any CRM-area sub-feature
+  // (Accounts today; future Calendar / Quotes / Bills / Messaging)
+  // lights up the Clients sidebar section automatically, and
+  // disabling all of them hides it again.
+  out.clients = Boolean(
+    out.customerPortal
+    // future siblings: || out.calendar || out.quotes || out.bills || out.messaging
+  );
   return out;
 }
 

frontend/src/features/settings/tabs/FeaturesTab.tsx

@@ -12,6 +12,7 @@ import {
   BarChart3,
   Users,
   UserCog,
+  Briefcase,
 } from 'lucide-react';
 import { useTranslation } from 'react-i18next';
 import { Button, Card } from '../../../components/common';
@@ -108,24 +109,30 @@ export const FeaturesTab: React.FC = () => {
           />
         </Section>
 
-        {/* Customer accounts (#354) — recurring customer logins. The
-            calendar / quotes / bills / messaging cards below are
-            customer-side surfaces; they only render in the customer
-            dashboard when this is on. */}
-        <Section title={t('settings.features.sections.customers', 'Customers')}>
+        {/* Clients (#354 follow-up). Visual grouping for the CRM-area
+            sub-features. The "Clients" sidebar section itself is gated
+            by a derived `clients` flag (computed from whether any
+            child below is on), so there's no explicit parent toggle —
+            admins just enable the specific feature they want and the
+            section appears automatically. */}
+        <Section title={t('settings.features.sections.clients', 'Clients')}>
           <FeatureCard
             icon={UserCog}
-            title={t('settings.features.customerPortal.title', 'Customer portal')}
+            title={t('settings.features.customerPortal.title', 'Accounts')}
             description={t(
               'settings.features.customerPortal.description',
-              'Persistent customer logins. Recurring clients see all their assigned galleries from one place — no per-event passwords. Foundation for Calendar / Quotes / Bills (which only render in the customer dashboard when this is on).',
+              'Persistent customer logins. Recurring clients see all their assigned galleries from one place — no per-event passwords. Customers log in at /customer/login and you manage them under Clients → Accounts.',
             )}
             status="beta"
             statusLabel={statusLabel('beta')}
-            sidebarLabel={t('navigation.customers', 'Customers')}
+            sidebarLabel={t('clients.subnav.accounts', 'Accounts')}
             enabled={staged.customerPortal}
             onToggle={(next) => setFlag('customerPortal', next)}
           />
+          {/* Future sub-features (Calendar / Quotes / Bills / Messaging)
+              slot in here as FeatureCard entries when they ship. No
+              placeholder cards today — the Clients section just shows
+              what's actually built. */}
         </Section>
 
         {/* Communication */}

frontend/src/i18n/locales/de.json

@@ -168,7 +168,8 @@
     "cmsPages": "CMS-Seiten",
     "users": "Benutzer",
     "calendar": "Kalender",
-    "customers": "Kunden"
+    "customers": "Kunden",
+    "clients": "Kunden"
   },
   "eventTypes": {
     "title": "Veranstaltungsarten",
@@ -1449,7 +1450,8 @@
         "scheduling": "Terminplanung",
         "sales": "Vertrieb",
         "insights": "Auswertungen & Zugriff",
-        "customers": "Kunden"
+        "customers": "Kunden",
+        "clients": "Kunden"
       },
       "status": {
         "stable": "stabil",
@@ -1497,8 +1499,12 @@
         "warning": "Bestehende Benutzerkonten bleiben gültig; die Admin-Oberfläche für deren Verwaltung wird ausgeblendet, bis Sie dies wieder aktivieren."
       },
       "customerPortal": {
-        "title": "Kundenportal",
-        "description": "Persistente Kunden-Logins. Wiederkehrende Kunden sehen alle zugeordneten Galerien an einem Ort — keine Passwörter pro Event. Grundlage für Kalender / Angebote / Rechnungen (die nur im Kundendashboard erscheinen, wenn diese Option aktiviert ist)."
+        "title": "Konten",
+        "description": "Persistente Kunden-Logins. Wiederkehrende Kunden sehen alle zugewiesenen Galerien an einem Ort — keine Passwörter pro Event. Kunden melden sich unter /customer/login an, verwaltet werden sie unter Kunden → Konten."
+      },
+      "clients": {
+        "title": "Kunden",
+        "description": "Hauptschalter für den Kunden-Bereich in der Seitenleiste. Aus blendet den Bereich und alle Unterfunktionen aus, unabhängig von deren individuellen Schaltern – beim erneuten Einschalten wird der vorherige Zustand wiederhergestellt."
       }
     },
     "customerSurface": {
@@ -2854,5 +2860,17 @@
       "success": "Kunde gelöscht",
       "error": "Kunde konnte nicht gelöscht werden"
     }
+  },
+  "clients": {
+    "title": "Kunden",
+    "subtitle": "Kundenkonten, Termine, Angebote und Rechnungen für wiederkehrende Kunden.",
+    "navAriaLabel": "Kunden-Navigation",
+    "empty": {
+      "title": "Keine Kunden-Funktionen aktiviert",
+      "body": "Aktiviere „Konten\" (oder eine andere Kunden-Unterfunktion) unter Einstellungen → Funktionen, um loszulegen."
+    },
+    "subnav": {
+      "accounts": "Konten"
+    }
   }
 }

frontend/src/i18n/locales/en.json

@@ -168,7 +168,8 @@
     "cmsPages": "CMS Pages",
     "users": "Users",
     "calendar": "Calendar",
-    "customers": "Customers"
+    "customers": "Customers",
+    "clients": "Clients"
   },
   "archives": {
     "title": "Archives",
@@ -1088,7 +1089,8 @@
         "scheduling": "Scheduling",
         "sales": "Sales",
         "insights": "Insights & Access",
-        "customers": "Customers"
+        "customers": "Customers",
+        "clients": "Clients"
       },
       "status": {
         "stable": "stable",
@@ -1136,8 +1138,12 @@
         "warning": "Existing user accounts stay valid; the admin UI for managing them will be hidden until you re-enable this."
       },
       "customerPortal": {
-        "title": "Customer portal",
-        "description": "Persistent customer logins. Recurring clients see all their assigned galleries from one place — no per-event passwords. Foundation for Calendar / Quotes / Bills (which only render in the customer dashboard when this is on)."
+        "title": "Accounts",
+        "description": "Persistent customer logins. Recurring clients see all their assigned galleries from one place — no per-event passwords. Customers log in at /customer/login and you manage them under Clients → Accounts."
+      },
+      "clients": {
+        "title": "Clients",
+        "description": "Master switch for the Clients sidebar section. Off hides the section and every sub-feature below regardless of their individual toggles — re-enable to restore them to whatever you set last."
       }
     },
     "customerSurface": {
@@ -2854,5 +2860,17 @@
       "success": "Customer erased",
       "error": "Could not erase customer"
     }
+  },
+  "clients": {
+    "title": "Clients",
+    "subtitle": "Customer accounts, scheduling, quotes and billing for recurring clients.",
+    "navAriaLabel": "Clients navigation",
+    "empty": {
+      "title": "No client features enabled",
+      "body": "Enable Accounts (or another Clients sub-feature) under Settings → Features to get started."
+    },
+    "subnav": {
+      "accounts": "Accounts"
+    }
   }
 }

frontend/src/i18n/locales/fr.json

@@ -169,7 +169,8 @@
     "backup": "Sauvegarde et Restauration",
     "cmsPages": "Pages CMS",
     "users": "Utilisateurs",
-    "customers": "Clients"
+    "customers": "Clients",
+    "clients": "Clients"
   },
   "archives": {
     "title": "Archives",
@@ -1071,11 +1072,16 @@
     "navAriaLabel": "Navigation des paramètres",
     "features": {
       "sections": {
-        "customers": "Clients"
+        "customers": "Clients",
+        "clients": "Clients"
       },
       "customerPortal": {
-        "title": "Portail client",
-        "description": "Connexions client persistantes. Les clients récurrents voient toutes leurs galeries assignées au même endroit — plus de mots de passe par événement. Base pour Calendrier / Devis / Factures (qui n'apparaissent dans le tableau de bord client que lorsque cette option est activée)."
+        "title": "Comptes",
+        "description": "Connexions client persistantes. Les clients récurrents voient toutes leurs galeries assignées au même endroit — pas de mots de passe par événement. Les clients se connectent sur /customer/login et vous les gérez sous Clients → Comptes."
+      },
+      "clients": {
+        "title": "Clients",
+        "description": "Interrupteur principal pour la section Clients de la barre latérale. Désactivé, masque la section et toutes les sous-fonctionnalités quelles que soient leurs bascules individuelles — réactiver les restaure dans leur état précédent."
       }
     },
     "customerSurface": {
@@ -2808,5 +2814,17 @@
       "success": "Client effacé",
       "error": "Impossible d'effacer le client"
     }
+  },
+  "clients": {
+    "title": "Clients",
+    "subtitle": "Comptes clients, planification, devis et facturation pour les clients récurrents.",
+    "navAriaLabel": "Navigation Clients",
+    "empty": {
+      "title": "Aucune fonctionnalité client activée",
+      "body": "Activez Comptes (ou une autre sous-fonctionnalité Clients) dans Paramètres → Fonctionnalités pour commencer."
+    },
+    "subnav": {
+      "accounts": "Comptes"
+    }
   }
 }

frontend/src/i18n/locales/nl.json

@@ -168,7 +168,8 @@
     "cmsPages": "CMS-pagina's",
     "users": "Gebruikers",
     "calendar": "Agenda",
-    "customers": "Klanten"
+    "customers": "Klanten",
+    "clients": "Klanten"
   },
   "archives": {
     "title": "Archieven",
@@ -1088,7 +1089,8 @@
         "scheduling": "Planning",
         "sales": "Verkoop",
         "insights": "Inzichten & Toegang",
-        "customers": "Klanten"
+        "customers": "Klanten",
+        "clients": "Klanten"
       },
       "status": {
         "stable": "stabiel",
@@ -1136,8 +1138,12 @@
         "warning": "Bestaande gebruikersaccounts blijven geldig; de admin-interface om ze te beheren wordt verborgen totdat u dit weer inschakelt."
       },
       "customerPortal": {
-        "title": "Klantenportaal",
-        "description": "Permanente klantlogins. Terugkerende klanten zien al hun toegewezen galerijen op één plek — geen wachtwoorden per evenement. Basis voor Agenda / Offertes / Facturen (die alleen in het klantdashboard verschijnen als dit aan staat)."
+        "title": "Accounts",
+        "description": "Permanente klantlogins. Terugkerende klanten zien al hun toegewezen galerijen op één plek — geen wachtwoorden per evenement. Klanten loggen in op /customer/login en je beheert ze onder Klanten → Accounts."
+      },
+      "clients": {
+        "title": "Klanten",
+        "description": "Hoofdschakelaar voor het Klanten-onderdeel in de zijbalk. Uitgeschakeld verbergt het onderdeel en alle subfuncties ongeacht hun individuele schakelaars — opnieuw inschakelen herstelt de vorige status."
       }
     },
     "customerSurface": {
@@ -2854,5 +2860,17 @@
       "success": "Klant gewist",
       "error": "Klant kon niet worden gewist"
     }
+  },
+  "clients": {
+    "title": "Klanten",
+    "subtitle": "Klantaccounts, planning, offertes en facturering voor terugkerende klanten.",
+    "navAriaLabel": "Klanten-navigatie",
+    "empty": {
+      "title": "Geen klantfuncties ingeschakeld",
+      "body": "Schakel Accounts (of een andere Klanten-subfunctie) in onder Instellingen → Functies om te beginnen."
+    },
+    "subnav": {
+      "accounts": "Accounts"
+    }
   }
 }

frontend/src/i18n/locales/pt.json

@@ -171,7 +171,8 @@
     "cmsPages": "Páginas CMS",
     "users": "Utilizadores",
     "calendar": "Calendário",
-    "customers": "Clientes"
+    "customers": "Clientes",
+    "clients": "Clientes"
   },
   "archives": {
     "title": "Arquivos",
@@ -1105,7 +1106,8 @@
         "scheduling": "Agendamento",
         "sales": "Vendas",
         "insights": "Análises & Acesso",
-        "customers": "Clientes"
+        "customers": "Clientes",
+        "clients": "Clientes"
       },
       "status": {
         "stable": "estável",
@@ -1153,8 +1155,12 @@
         "warning": "Contas de usuário existentes permanecem válidas; a interface administrativa para gerenciá-las ficará oculta até você reativar isto."
       },
       "customerPortal": {
-        "title": "Portal do cliente",
-        "description": "Logins persistentes para clientes. Clientes recorrentes veem todas as galerias atribuídas em um só lugar — sem senhas por evento. Base para Calendário / Orçamentos / Faturas (que só aparecem no painel do cliente quando isto está ativo)."
+        "title": "Contas",
+        "description": "Logins persistentes para clientes. Clientes recorrentes veem todas as galerias atribuídas em um só lugar — sem senhas por evento. Os clientes entram em /customer/login e você os gerencia em Clientes → Contas."
+      },
+      "clients": {
+        "title": "Clientes",
+        "description": "Chave principal da seção Clientes na barra lateral. Desligado oculta a seção e todas as sub-funcionalidades independentemente dos seus controles individuais — reativar restaura o estado anterior."
       }
     },
     "customerSurface": {
@@ -2887,5 +2893,17 @@
       "success": "Cliente apagado",
       "error": "Não foi possível apagar o cliente"
     }
+  },
+  "clients": {
+    "title": "Clientes",
+    "subtitle": "Contas de clientes, agendamento, orçamentos e faturamento para clientes recorrentes.",
+    "navAriaLabel": "Navegação de Clientes",
+    "empty": {
+      "title": "Nenhuma funcionalidade de cliente ativada",
+      "body": "Ative Contas (ou outra sub-funcionalidade de Clientes) em Configurações → Recursos para começar."
+    },
+    "subnav": {
+      "accounts": "Contas"
+    }
   }
 }

frontend/src/i18n/locales/ru.json

@@ -174,7 +174,8 @@
     "cmsPages": "CMS-страницы",
     "users": "Пользователи",
     "calendar": "Календарь",
-    "customers": "Клиенты"
+    "customers": "Клиенты",
+    "clients": "Клиенты"
   },
   "archives": {
     "title": "Архивы",
@@ -1122,7 +1123,8 @@
         "scheduling": "Планирование",
         "sales": "Продажи",
         "insights": "Аналитика и доступ",
-        "customers": "Клиенты"
+        "customers": "Клиенты",
+        "clients": "Клиенты"
       },
       "status": {
         "stable": "стабильно",
@@ -1170,8 +1172,12 @@
         "warning": "Существующие учётные записи остаются действительными; интерфейс управления ими будет скрыт до повторного включения."
       },
       "customerPortal": {
-        "title": "Клиентский портал",
-        "description": "Постоянные логины клиентов. Постоянные клиенты видят все назначенные галереи в одном месте — без паролей для каждого события. Основа для Календаря / Смет / Счетов (которые отображаются в клиентской панели только при включённой опции)."
+        "title": "Учётные записи",
+        "description": "Постоянные учётные записи клиентов. Постоянные клиенты видят все назначенные галереи в одном месте — без паролей для каждого события. Клиенты входят на /customer/login, а вы управляете ими в разделе Клиенты → Учётные записи."
+      },
+      "clients": {
+        "title": "Клиенты",
+        "description": "Главный переключатель раздела «Клиенты» в боковой панели. Выключено — раздел и все подфункции скрыты независимо от их отдельных переключателей. При повторном включении состояние подфункций восстанавливается."
       }
     },
     "customerSurface": {
@@ -2920,5 +2926,17 @@
       "success": "Данные клиента стёрты",
       "error": "Не удалось стереть данные клиента"
     }
+  },
+  "clients": {
+    "title": "Клиенты",
+    "subtitle": "Учётные записи клиентов, расписание, сметы и счета для постоянных клиентов.",
+    "navAriaLabel": "Навигация по клиентам",
+    "empty": {
+      "title": "Нет включённых клиентских функций",
+      "body": "Включите «Учётные записи» (или другую подфункцию «Клиенты») в Настройки → Функции, чтобы начать."
+    },
+    "subnav": {
+      "accounts": "Учётные записи"
+    }
   }
 }

frontend/src/pages/admin/CustomerDetailPage.tsx

@@ -125,7 +125,7 @@ export const CustomerDetailPage: React.FC = () => {
       queryClient.invalidateQueries({ queryKey: ['admin-customer', customerId] });
       queryClient.invalidateQueries({ queryKey: ['admin-customers'] });
       toast.success(t('customers.deactivate.success', 'Customer deactivated'));
-      navigate('/admin/customers');
+      navigate('/admin/clients/accounts');
     },
     onError: () => toast.error(t('customers.deactivate.error', 'Could not deactivate customer')),
   });
@@ -152,7 +152,7 @@ export const CustomerDetailPage: React.FC = () => {
       queryClient.invalidateQueries({ queryKey: ['admin-customer', customerId] });
       queryClient.invalidateQueries({ queryKey: ['admin-customers'] });
       toast.success(t('customers.erase.success', 'Customer erased'));
-      navigate('/admin/customers');
+      navigate('/admin/clients/accounts');
     },
     onError: () => toast.error(t('customers.erase.error', 'Could not erase customer')),
   });
@@ -176,7 +176,7 @@ export const CustomerDetailPage: React.FC = () => {
       <div className="flex items-center justify-between gap-4">
         <div className="flex items-center gap-3 min-w-0">
           <Link
-            to="/admin/customers"
+            to="/admin/clients/accounts"
             className="p-2 -ml-2 rounded hover:bg-neutral-100 dark:hover:bg-neutral-700"
             aria-label={t('common.back', 'Back')}
           >

frontend/src/pages/admin/CustomerManagementPage.tsx

@@ -444,7 +444,7 @@ export const CustomerManagementPage: React.FC = () => {
                   {filteredCustomers.map((c) => (
                     <tr key={c.id} className="border-t" style={{ borderColor: 'var(--color-surface-border)' }}>
                       <td className="px-3 py-3">
-                        <Link to={`/admin/customers/${c.id}`} className="text-theme hover:underline">
+                        <Link to={`/admin/clients/accounts/${c.id}`} className="text-theme hover:underline">
                           {renderCustomerName(c)}
                         </Link>
                       </td>

frontend/src/services/featureFlags.service.ts

@@ -10,12 +10,15 @@ export type FeatureKey =
   | 'messaging'
   | 'analytics'
   | 'userManagement'
-  // Foundation flag for the customer-side surface (#354). Gates the
-  // /customer/* routes (login, dashboard, profile, accept-invite,
-  // reset-password) and the admin Customers management page. The
-  // calendar / calendarBooking / quotes / bills / messaging flags
-  // above hang off this — they only appear in the customer dashboard
-  // when customerPortal is also ON.
+  // Top-level "Clients" section (#354 follow-up). Parent flag that
+  // gates the /admin/clients/* sidebar entry. customerPortal,
+  // calendar, quotes, bills and messaging are conceptually its
+  // children — when `clients` is off none of them surface in the
+  // admin UI even if their individual flags are on.
+  | 'clients'
+  // Customer-side portal surface (#354). Gates /customer/* routes
+  // (login, dashboard, profile, accept-invite, reset-password) and
+  // the Accounts sub-page under Clients in the admin UI.
   | 'customerPortal';
 
 export type FeatureFlags = Record<FeatureKey, boolean>;