refactor: remove module system integration from admin and CLI

Removes all module-related logic from the admin dashboard, CLI database
initialization, and AdminPages component:

- Drop `initModules` call from `db init` CLI command and simplify the
  completion message to only reflect core feature tables
- Remove `getModuleDashboardStats` and module page routing from admin
  stats actions and update usage documentation accordingly
- Simplify `AdminPagesClient` to remove module page loading, lazy
  components, and module-specific props (`moduleStats`, `modulePageInfo`,
  `routeInfo`, `enabledModules`)

src/features/admin/components/AdminPages.js

@@ -1,85 +1,24 @@
 'use client';
 
-/**
- * Admin Pages Component
- * 
- * This component handles both core admin pages and module pages.
- * Module pages are loaded dynamically on the client where hooks work properly.
- */
-
-import { Suspense } from 'react';
 import DashboardPage from './pages/DashboardPage.js';
 import UsersPage from './pages/UsersPage.js';
 import UserEditPage from './pages/UserEditPage.js';
 import ProfilePage from './pages/ProfilePage.js';
-import { getModulePageLoader } from '../../../modules/modules.pages.js';
 
-// Loading component for suspense
-function PageLoading() {
-  return (
-    <div className="flex items-center justify-center min-h-[400px]">
-      <div className="animate-spin rounded-full h-8 w-8 border-b-2 border-white"></div>
-    </div>
-  );
-}
+export default function AdminPagesClient({ params, user, dashboardStats = null }) {
+  const parts = params?.admin || [];
+  const page = parts[0] || 'dashboard';
 
-export default function AdminPagesClient({
-  params,
-  user,
-  dashboardStats = null,
-  moduleStats = {},
-  modulePageInfo = null,
-  routeInfo = null,
-  enabledModules = {}
-}) {
-  // If this is a module page, render it with lazy loading
-  if (modulePageInfo && routeInfo) {
-    const LazyComponent = getModulePageLoader(modulePageInfo.module, modulePageInfo.path);
-    if (LazyComponent) {
-      // Build props for the page
-      const pageProps = { user };
-      if (routeInfo.action === 'edit' && routeInfo.id) {
-        // Add ID props for edit pages (modules may use different prop names)
-        pageProps.id = routeInfo.id;
-        pageProps.invoiceId = routeInfo.id;
-        pageProps.clientId = routeInfo.id;
-        pageProps.itemId = routeInfo.id;
-        pageProps.categoryId = routeInfo.id;
-        pageProps.transactionId = routeInfo.id;
-        pageProps.recurrenceId = routeInfo.id;
-        pageProps.templateId = routeInfo.id;
-        pageProps.postId = routeInfo.id;
-      }
-      
-      return (
-        <Suspense fallback={<PageLoading />}>
-          <LazyComponent {...pageProps} />
-        </Suspense>
-      );
-    }
+  if (page === 'users' && parts[1] === 'edit' && parts[2]) {
+    return <UserEditPage userId={parts[2]} user={user} />;
   }
 
-  // Determine core page from routeInfo or params
-  let currentPage = 'dashboard';
-  if (routeInfo?.path) {
-    const parts = routeInfo.path.split('/').filter(Boolean);
-    currentPage = parts[1] || 'dashboard'; // /admin/[page]
-  } else if (params?.admin) {
-    currentPage = params.admin[0] || 'dashboard';
-  }
-
-  // Core page components mapping (non-module pages)
-  const usersPageComponent = routeInfo?.action === 'edit' && routeInfo?.id
-    ? () => <UserEditPage userId={routeInfo.id} user={user} enabledModules={enabledModules} />
-    : () => <UsersPage user={user} />;
-
   const corePages = {
-    dashboard: () => <DashboardPage user={user} stats={dashboardStats} moduleStats={moduleStats} enabledModules={enabledModules} />,
-    users: usersPageComponent,
+    dashboard: () => <DashboardPage user={user} stats={dashboardStats} />,
+    users: () => <UsersPage user={user} />,
     profile: () => <ProfilePage user={user} />,
   };
 
-  // Render the appropriate core page or default to dashboard
-  const CorePageComponent = corePages[currentPage];
-  return CorePageComponent ? <CorePageComponent /> : <DashboardPage user={user} stats={dashboardStats} moduleStats={moduleStats} enabledModules={enabledModules} />;
+  const CorePageComponent = corePages[page];
+  return CorePageComponent ? <CorePageComponent /> : <DashboardPage user={user} stats={dashboardStats} />;
 }

src/features/admin/components/pages/DashboardPage.js

@@ -1,33 +1,11 @@
 'use client';
 
-/**
- * Admin Dashboard Page
- * Displays core stats and dynamically loads module dashboard widgets
- */
-
-import { Suspense } from 'react';
 import { StatCard } from '../../../../shared/components';
 import { UserMultiple02Icon } from '../../../../shared/Icons.js';
-import { getModuleDashboardWidgets } from '../../../../modules/modules.pages.js';
 
-/**
- * Loading placeholder for widgets
- */
-function WidgetLoading() {
-  return (
-    <div className="animate-pulse bg-neutral-200 dark:bg-neutral-800 rounded-lg h-32"></div>
-  );
-}
-
-export default function DashboardPage({ user, stats, moduleStats = {}, enabledModules = {} }) {
+export default function DashboardPage({ user, stats }) {
   const loading = !stats;
 
-  // Get only enabled module dashboard widgets
-  const allModuleWidgets = getModuleDashboardWidgets();
-  const moduleWidgets = Object.fromEntries(
-    Object.entries(allModuleWidgets).filter(([moduleName]) => enabledModules[moduleName])
-  );
-
   return (
     <div className="flex flex-col gap-4 sm:gap-6 lg:gap-8">
       <div className="flex items-center justify-between">
@@ -40,16 +18,6 @@ export default function DashboardPage({ user, stats, moduleStats = {}, enabledMo
       </div>
 
       <div className="grid grid-cols-1 sm:grid-cols-2 lg:grid-cols-3 gap-4 sm:gap-6">
-        {/* Module dashboard widgets (dynamically loaded) */}
-        {Object.entries(moduleWidgets).map(([moduleName, widgets]) => (
-          widgets.map((Widget, index) => (
-            <Suspense key={`${moduleName}-widget-${index}`} fallback={<WidgetLoading />}>
-              <Widget stats={moduleStats[moduleName]} />
-            </Suspense>
-          ))
-        ))}
-
-        {/* Core stats - always shown */}
         <StatCard
           title="Nombre d'utilisateurs"
           value={loading ? '-' : String(stats?.totalUsers || 0)}

src/features/admin/components/pages/UserEditPage.js

@@ -9,20 +9,17 @@ import { useToast } from '@zen/core/toast';
  * User Edit Page Component
  * Page for editing an existing user (admin only)
  */
-const UserEditPage = ({ userId, user, enabledModules = {} }) => {
+const UserEditPage = ({ userId, user }) => {
     const router = useRouter();
     const toast = useToast();
-    const clientsModuleActive = Boolean(enabledModules?.clients);
 
     const [userData, setUserData] = useState(null);
     const [loading, setLoading] = useState(true);
     const [saving, setSaving] = useState(false);
-    const [clients, setClients] = useState([]);
     const [formData, setFormData] = useState({
         name: '',
         role: 'user',
         email_verified: 'false',
-        client_id: ''
     });
     const [errors, setErrors] = useState({});
 
@@ -40,15 +37,6 @@ const UserEditPage = ({ userId, user, enabledModules = {} }) => {
         loadUser();
     }, [userId]);
 
-    useEffect(() => {
-        if (clientsModuleActive) {
-            fetch('/zen/api/admin/clients?limit=500', { credentials: 'include' })
-                .then(res => res.json())
-                .then(data => data.clients ? setClients(data.clients) : setClients([]))
-                .catch(() => setClients([]));
-        }
-    }, [clientsModuleActive]);
-
     const loadUser = async () => {
         try {
             setLoading(true);
@@ -64,7 +52,6 @@ const UserEditPage = ({ userId, user, enabledModules = {} }) => {
                     name: data.user.name || '',
                     role: data.user.role || 'user',
                     email_verified: data.user.email_verified ? 'true' : 'false',
-                    client_id: data.linkedClient ? String(data.linkedClient.id) : ''
                 }));
             } else {
                 toast.error(data.message || 'Utilisateur introuvable');
@@ -107,7 +94,6 @@ const UserEditPage = ({ userId, user, enabledModules = {} }) => {
                     name: formData.name.trim(),
                     role: formData.role,
                     email_verified: formData.email_verified === 'true',
-                    ...(clientsModuleActive && { client_id: formData.client_id ? parseInt(formData.client_id, 10) : null })
                 })
             });
             const data = await response.json();
@@ -209,21 +195,6 @@ const UserEditPage = ({ userId, user, enabledModules = {} }) => {
                                 onChange={(value) => handleInputChange('email_verified', value)}
                                 options={emailVerifiedOptions}
                             />
-
-                            {clientsModuleActive && (
-                                <Select
-                                    label="Client associé"
-                                    value={formData.client_id}
-                                    onChange={(value) => handleInputChange('client_id', value)}
-                                    options={[
-                                        { value: '', label: 'Aucun' },
-                                        ...clients.map(c => ({
-                                            value: String(c.id),
-                                            label: [c.client_number, c.company_name || [c.first_name, c.last_name].filter(Boolean).join(' ') || c.email].filter(Boolean).join(' – ')
-                                        }))
-                                    ]}
-                                />
-                            )}
                         </div>
                     </div>
                 </Card>