docs/MONETARISIERUNG_FEATURES_INTERAKTIV.md

@@ -75,7 +75,6 @@ Die folgende Tabelle ist die **Checkliste pro Modul**. Pro Zeile: **was** verkau
 | `trustee` | Treuhand | | | ☐ ja ☐ nein | | |
 | `realestate` | Immobilien | | | ☐ ja ☐ nein | | |
 | `chatbot` | Chatbot | | | ☐ ja ☐ nein | | |
-| `chatworkflow` | Workflow | | | ☐ ja ☐ nein | | |
 | `automation` | Automatisierung | | | ☐ ja ☐ nein | | |
 | `teamsbot` | Teams Bot | | | ☐ ja ☐ nein | | |
 | `neutralization` | Neutralisierung | | | ☐ ja ☐ nein | | |
@@ -144,12 +143,6 @@ Viele **Views** sind Kandidaten für „Basic / Pro“ oder Add-ons (technisch:
 - [ ] `dashboard` — …
 - [ ] `instance-roles` (adminOnly) — …
 
-### `chatworkflow`
-
-- [ ] `dashboard` — …
-- [ ] `runs` — …
-- [ ] `files` — …
-
 **Paket-Entscheid (freies Feld):**
 
 | Paketname | Enthaltene `featureCode`s | Enthaltene Views / Ausnahmen | Limits (Instanzen, Nutzer, Speicher, Credits) |

docs/MONETARISIERUNG_KURZ_PRAESENTATION.md

@@ -43,7 +43,7 @@ Transparenz: Verbrauch lässt sich nach **Feature**, **Instanz**, **Provider/Mod
 | Treuhand (`trustee`) | Dokumente, Positionen, Import/Scan, Buchhaltung |
 | Immobilien (`realestate`) | Karte / Mandantenfähigkeit |
 | Chatbot (`chatbot`) | Konversationen, Konfiguration |
-| Workflow (`chatworkflow`) | Überblicke, Runs, Dateien |
+| Workflow-Automation (Systemkomponente) | Workflows, Editor, Durchläufe |
 | Automatisierung (`automation`) | Definitionen, Vorlagen, Logs |
 | Teams Bot (`teamsbot`) | Dashboard, Sessions, Settings |
 | Neutralisierung (`neutralization`) | Playground, Config, Attribute |

src/App.tsx

@@ -41,7 +41,7 @@ import { GDPRPage } from './pages/GDPR';
 import StorePage from './pages/Store';
 import { IntegrationsOverviewPage } from './pages/IntegrationsOverviewPage';
 import { FeatureViewPage } from './pages/FeatureView';
-import { AccessManagementHub, AdminMandatesPage, AdminUsersPage, AdminUserMandatesPage, AdminFeatureAccessPage, AdminInvitationsPage, AdminMandateRolesPage, AdminFeatureRolesPage, AdminFeatureInstanceUsersPage, AdminMandateRolePermissionsPage, AdminUserAccessOverviewPage, AdminLogsPage, AdminDemoConfigPage } from './pages/admin';
+import { AccessManagementHub, AdminMandatesPage, AdminUsersPage, AdminUserMandatesPage, AdminFeatureAccessPage, AdminInvitationsPage, AdminMandateRolesPage, AdminFeatureRolesPage, AdminFeatureInstanceUsersPage, AdminMandateRolePermissionsPage, AdminUserAccessOverviewPage, AdminLogsPage, AdminDemoConfigPage, AdminSessionsPage } from './pages/admin';
 import { AdminMandateWizardPage, AdminInvitationWizardPage } from './pages/admin/wizards';
 import { PromptsPage, FilesPage, ConnectionsPage } from './pages/basedata';
 import { BillingDataView, BillingAdmin, BillingMandateView, AdminSubscriptionsPage } from './pages/billing';
@@ -220,6 +220,7 @@ function App() {
                                 </Route>
                                 <Route path="subscriptions" element={<AdminSubscriptionsPage />} />
                                 <Route path="logs" element={<AdminLogsPage />} />
+                                <Route path="sessions" element={<AdminSessionsPage />} />
                                 <Route path="languages" element={null} />
                                 <Route path="database-health" element={null} />
                                 <Route path="demo-config" element={<AdminDemoConfigPage />} />

src/api.ts

@@ -106,18 +106,27 @@ api.interceptors.request.use(
     }
 );
 
-// Add a response interceptor to handle token expiration
+// Silent refresh: attempt token renewal before forcing re-login
+let _isRefreshing = false;
+let _refreshSubscribers: Array<(success: boolean) => void> = [];
+
+function _onRefreshDone(success: boolean) {
+    _refreshSubscribers.forEach(cb => cb(success));
+    _refreshSubscribers = [];
+}
+
 api.interceptors.response.use(
     (response) => response,
     async (error) => {
-        if (error.response?.status === 401) {
+        const originalRequest = error.config;
-            // Don't redirect to login if the request was to a login endpoint
+
-            const isLoginEndpoint = error.config?.url?.includes('/login') ||
+        if (error.response?.status === 401) {
-                                  error.config?.url?.includes('/api/local/login') ||
+            const isAuthEndpoint = originalRequest?.url?.includes('/login') ||
-                                  error.config?.url?.includes('/api/msft/auth/login') ||
+                                   originalRequest?.url?.includes('/api/local/login') ||
-                                  error.config?.url?.includes('/api/google/auth/login');
+                                   originalRequest?.url?.includes('/api/local/refresh') ||
+                                   originalRequest?.url?.includes('/api/msft/auth/login') ||
+                                   originalRequest?.url?.includes('/api/google/auth/login');
 
-            // Don't redirect if we're on a public auth page (prevents redirect loops and allows public pages to work)
             const pathname = window.location.pathname;
             const isOnPublicAuthPage = pathname === '/login' ||
                                        pathname.startsWith('/login') ||
@@ -129,19 +138,52 @@ api.interceptors.response.use(
                                        pathname.startsWith('/password-reset-request') ||
                                        pathname.startsWith('/invite');
 
-            if (!isLoginEndpoint && !isOnPublicAuthPage) {
+            if (isAuthEndpoint || isOnPublicAuthPage) {
-                // Clear local auth data (httpOnly cookies are cleared by backend)
+                return Promise.reject(error);
+            }
+
+            // Attempt silent refresh (only once per request)
+            if (!originalRequest._retryAfterRefresh) {
+                originalRequest._retryAfterRefresh = true;
+
+                if (!_isRefreshing) {
+                    _isRefreshing = true;
+                    try {
+                        await api.post('/api/local/refresh');
+                        _isRefreshing = false;
+                        _onRefreshDone(true);
+                        return api(originalRequest);
+                    } catch {
+                        _isRefreshing = false;
+                        _onRefreshDone(false);
                         sessionStorage.removeItem('auth_authority');
                         clearUserDataCache();
-                // Redirect to login
                         window.location.href = '/login';
+                        return Promise.reject(error);
+                    }
+                } else {
+                    // Another request is already refreshing; queue this one
+                    return new Promise((resolve, reject) => {
+                        _refreshSubscribers.push((success: boolean) => {
+                            if (success) {
+                                resolve(api(originalRequest));
+                            } else {
+                                reject(error);
+                            }
+                        });
+                    });
                 }
             }
 
-        // Handle rate limiting (429) - don't throw, just log and return error
+            // Refresh already failed for this request
+            sessionStorage.removeItem('auth_authority');
+            clearUserDataCache();
+            window.location.href = '/login';
+        }
+
+        // Handle rate limiting (429)
         if (error.response?.status === 429) {
             console.warn('Rate limit exceeded (429). Please wait before making more requests.');
-            // Don't cause cascading errors by throwing here
         }
 
         return Promise.reject(error);

src/api/billingApi.ts

@@ -38,29 +38,6 @@ export interface BillingTransaction {
   userName?: string;
 }
 
-/** Pagination request for GET /api/billing/transactions with `pagination` JSON (table + grouping). */
-export interface BillingTransactionsPaginationParams {
-  page?: number;
-  pageSize?: number;
-  sort?: Array<{ field: string; direction: 'asc' | 'desc' }>;
-  filters?: Record<string, any>;
-  search?: string;
-  viewKey?: string;
-  groupByLevels?: Array<{ field: string; nullLabel?: string; direction?: 'asc' | 'desc' }>;
-}
-
-export interface BillingTransactionsPaginatedResponse {
-  items: BillingTransaction[];
-  pagination?: {
-    currentPage: number;
-    pageSize: number;
-    totalItems: number;
-    totalPages: number;
-  };
-  groupLayout?: import('./connectionApi').GroupLayout;
-  appliedView?: { viewKey?: string; displayName?: string };
-}
-
 export interface BillingSettings {
   id: string;
   mandateId: string;
@@ -159,46 +136,6 @@ export async function fetchBalanceForMandate(
   });
 }
 
-/**
- * Fetch transaction history (table UI: pagination, filters, sort, saved views, grouping).
- * Endpoint: GET /api/billing/transactions?pagination=...
- */
-export async function fetchTransactionsPaginated(
-  request: ApiRequestFunction,
-  params?: BillingTransactionsPaginationParams
-): Promise<BillingTransactionsPaginatedResponse> {
-  const paginationObj: Record<string, unknown> = {};
-  if (params?.page !== undefined) paginationObj.page = params.page;
-  if (params?.pageSize !== undefined) paginationObj.pageSize = params.pageSize;
-  if (params?.sort?.length) paginationObj.sort = params.sort;
-  if (params?.filters && Object.keys(params.filters).length > 0) paginationObj.filters = params.filters;
-  if (params?.search) paginationObj.search = params.search;
-  if (params?.viewKey) paginationObj.viewKey = params.viewKey;
-  if (params?.groupByLevels !== undefined) paginationObj.groupByLevels = params.groupByLevels;
-
-  return await request({
-    url: '/api/billing/transactions',
-    method: 'get',
-    params: { pagination: JSON.stringify(paginationObj) },
-  });
-}
-
-/**
- * Fetch transaction history (legacy array window)
- * Endpoint: GET /api/billing/transactions
- */
-export async function fetchTransactions(
-  request: ApiRequestFunction,
-  limit: number = 50,
-  offset: number = 0
-): Promise<BillingTransaction[]> {
-  return await request({
-    url: '/api/billing/transactions',
-    method: 'get',
-    params: { limit, offset }
-  });
-}
-
 /**
  * Fetch usage statistics for an explicit date range.
  * Endpoint: GET /api/billing/statistics
@@ -406,51 +343,7 @@ export async function fetchMandateViewTransactions(
   });
 }
 
-// ============================================================================
-// USER VIEW TYPES & API FUNCTIONS
-// ============================================================================
-
-export interface UserBalance {
-  accountId: string;
-  mandateId: string;
-  mandateName: string;
-  userId: string;
-  userName: string;
-  balance: number;
-  warningThreshold: number;
-  isWarning: boolean;
-  enabled: boolean;
-}
-
 export interface UserTransaction extends BillingTransaction {
   userId?: string;
   userName?: string;
 }
-
-/**
- * Fetch user-level balances (RBAC-based)
- * Endpoint: GET /api/billing/view/users/balances
- */
-export async function fetchUserViewBalances(
-  request: ApiRequestFunction
-): Promise<UserBalance[]> {
-  return await request({
-    url: '/api/billing/view/users/balances',
-    method: 'get'
-  });
-}
-
-/**
- * Fetch user-level transactions (RBAC-based)
- * Endpoint: GET /api/billing/view/users/transactions
- */
-export async function fetchUserViewTransactions(
-  request: ApiRequestFunction,
-  limit: number = 100
-): Promise<UserTransaction[]> {
-  return await request({
-    url: '/api/billing/view/users/transactions',
-    method: 'get',
-    params: { limit }
-  });
-}

src/api/featuresApi.ts

@@ -11,7 +11,6 @@ import api from '../api';
 import type {
   FeaturesMyResponse,
   Mandate,
-  MandateFeature,
   FeatureInstance,
   InstancePermissions,
   AccessLevel,
@@ -56,18 +55,6 @@ const MOCK_CUSTOMER_PERMISSIONS: InstancePermissions = {
   },
 };
 
-const MOCK_WORKFLOW_PERMISSIONS: InstancePermissions = {
-  tables: {
-    WorkflowRun: { view: true, read: 'g', create: 'g', update: 'm', delete: 'n' },
-    WorkflowFile: { view: true, read: 'g', create: 'g', update: 'm', delete: 'm' },
-  },
-  views: {
-    'chatworkflow-dashboard': true,
-    'chatworkflow-runs': true,
-    'chatworkflow-files': true,
-  },
-};
-
 const MOCK_RESPONSE: FeaturesMyResponse = {
   mandates: [
     {
@@ -101,22 +88,6 @@ const MOCK_RESPONSE: FeaturesMyResponse = {
             },
           ],
         },
-        {
-          code: 'chatworkflow',
-          label: 'Workflow',
-          icon: 'play_circle',
-          instances: [
-            {
-              id: 'inst-soha-workflow',
-              featureCode: 'chatworkflow',
-              mandateId: 'mand-soha',
-              mandateName: 'Soha Treuhand',
-              instanceLabel: 'Beratung Dynamic',
-              userRoles: ['user'],
-              permissions: MOCK_WORKFLOW_PERMISSIONS,
-            },
-          ],
-        },
       ],
     },
     {
@@ -184,23 +155,6 @@ export async function fetchMyFeatures(): Promise<FeaturesMyResponse> {
   }
 }
 
-/**
- * Lädt die verfügbaren Features (für Admin - Feature-Instanz erstellen)
- * 
- * Endpoint: GET /api/features/available
- */
-export async function fetchAvailableFeatures(): Promise<MandateFeature[]> {
-  if (USE_MOCK) {
-    return [
-      { code: 'trustee', label: 'Treuhand', icon: 'briefcase', instances: [] },
-      { code: 'chatworkflow', label: 'Workflow', icon: 'play_circle', instances: [] },
-    ];
-  }
-  
-  const response = await api.get<MandateFeature[]>('/api/features/available');
-  return response.data;
-}
-
 // =============================================================================
 // TYPE GUARDS
 // =============================================================================

src/components/FlowEditor/editor/CanvasHeader.tsx

@@ -5,6 +5,7 @@
  */
 
 import React, { useState, useRef, useEffect, useMemo } from 'react';
+import { FloatingPortal } from '../../UiComponents/FloatingPortal';
 import {
   FaPlay,
   FaSpinner,
@@ -146,13 +147,13 @@ export const CanvasHeader: React.FC<CanvasHeaderProps> = ({
   const badge = statusBadge[currentStatus] || statusBadge.draft;
 
   const [newMenuOpen, setNewMenuOpen] = useState(false);
-  const newMenuRef = useRef<HTMLDivElement>(null);
+  const newMenuAnchorRef = useRef<HTMLDivElement>(null);
 
   const [templateMenuOpen, setTemplateMenuOpen] = useState(false);
-  const templateMenuRef = useRef<HTMLDivElement>(null);
+  const templateMenuAnchorRef = useRef<HTMLDivElement>(null);
 
   const [zoomMenuOpen, setZoomMenuOpen] = useState(false);
-  const zoomMenuRef = useRef<HTMLDivElement>(null);
+  const zoomMenuAnchorRef = useRef<HTMLButtonElement>(null);
   const [zoomInputDraft, setZoomInputDraft] = useState('');
 
   useEffect(() => {
@@ -160,16 +161,6 @@ export const CanvasHeader: React.FC<CanvasHeaderProps> = ({
     if (zp !== undefined) setZoomInputDraft(String(zp));
   }, [canvasEdit?.zoomPercent]);
 
-  useEffect(() => {
-    const _handleClickOutside = (e: MouseEvent) => {
-      if (newMenuRef.current && !newMenuRef.current.contains(e.target as Node)) setNewMenuOpen(false);
-      if (templateMenuRef.current && !templateMenuRef.current.contains(e.target as Node)) setTemplateMenuOpen(false);
-      if (zoomMenuRef.current && !zoomMenuRef.current.contains(e.target as Node)) setZoomMenuOpen(false);
-    };
-    document.addEventListener('mousedown', _handleClickOutside);
-    return () => document.removeEventListener('mousedown', _handleClickOutside);
-  }, []);
-
   const scopeLabels = useMemo(
     () =>
       ({
@@ -237,7 +228,7 @@ export const CanvasHeader: React.FC<CanvasHeaderProps> = ({
               aria-label={_panelOpen ? t('Workspace-Panel ausblenden') : t('Workspace-Panel öffnen')}
             />
           )}
-          <div ref={newMenuRef} className={styles.canvasHeaderNewSplit}>
+          <div className={styles.canvasHeaderNewSplit}>
             <div className={styles.canvasHeaderSplitPair}>
               <Button
                 type="button"
@@ -250,6 +241,7 @@ export const CanvasHeader: React.FC<CanvasHeaderProps> = ({
                 aria-label={t('Neuer leerer Workflow')}
               />
               {onNewFromTemplate && (
+                <div ref={newMenuAnchorRef}>
                   <Button
                     type="button"
                     variant={_tb}
@@ -262,9 +254,16 @@ export const CanvasHeader: React.FC<CanvasHeaderProps> = ({
                     aria-haspopup="menu"
                     aria-expanded={newMenuOpen}
                   />
+                </div>
               )}
             </div>
-            {newMenuOpen && onNewFromTemplate && (
+            {onNewFromTemplate && (
+              <FloatingPortal
+                open={newMenuOpen}
+                anchorRef={newMenuAnchorRef}
+                onClose={() => setNewMenuOpen(false)}
+                placement="bottom"
+              >
                 <div className={styles.canvasHeaderMenuDropdown} role="menu">
                   <button
                     type="button"
@@ -278,6 +277,7 @@ export const CanvasHeader: React.FC<CanvasHeaderProps> = ({
                     {t('Aus Vorlage…')}
                   </button>
                 </div>
+              </FloatingPortal>
             )}
           </div>
           <select
@@ -329,7 +329,7 @@ export const CanvasHeader: React.FC<CanvasHeaderProps> = ({
             title={_runTitle}
           />
           {currentWorkflowId && onSaveAsTemplate && (
-            <div ref={templateMenuRef} className={styles.canvasHeaderNewSplit}>
+            <div ref={templateMenuAnchorRef} className={styles.canvasHeaderNewSplit}>
               <Button
                 type="button"
                 variant={_tb}
@@ -344,7 +344,12 @@ export const CanvasHeader: React.FC<CanvasHeaderProps> = ({
               >
                 {t('Als Vorlage')}
               </Button>
-              {templateMenuOpen && (
+              <FloatingPortal
+                open={templateMenuOpen}
+                anchorRef={templateMenuAnchorRef}
+                onClose={() => setTemplateMenuOpen(false)}
+                placement="bottom"
+              >
                 <div className={styles.canvasHeaderMenuDropdown} role="menu">
                   {(['user', 'instance', 'mandate'] as const).map((s) => (
                     <button
@@ -361,7 +366,7 @@ export const CanvasHeader: React.FC<CanvasHeaderProps> = ({
                     </button>
                   ))}
                 </div>
-              )}
+              </FloatingPortal>
             </div>
           )}
 
@@ -387,7 +392,7 @@ export const CanvasHeader: React.FC<CanvasHeaderProps> = ({
           role="toolbar"
           aria-label={t('Canvas bearbeiten')}
         >
-          <div ref={zoomMenuRef} className={styles.canvasHeaderZoomCombo}>
+          <div className={styles.canvasHeaderZoomCombo}>
             <div className={styles.canvasHeaderZoomInputWrap}>
               <input
                 type="text"
@@ -410,6 +415,7 @@ export const CanvasHeader: React.FC<CanvasHeaderProps> = ({
               </span>
             </div>
             <button
+              ref={zoomMenuAnchorRef}
               type="button"
               className={styles.canvasHeaderZoomChevronBtn}
               onClick={() => setZoomMenuOpen((p) => !p)}
@@ -420,7 +426,13 @@ export const CanvasHeader: React.FC<CanvasHeaderProps> = ({
             >
               <FaCaretDown aria-hidden />
             </button>
-            {zoomMenuOpen && (
+            <FloatingPortal
+              open={zoomMenuOpen}
+              anchorRef={zoomMenuAnchorRef}
+              onClose={() => setZoomMenuOpen(false)}
+              placement="bottom"
+              align="end"
+            >
               <div className={styles.canvasHeaderMenuDropdown} role="menu">
                 <button
                   type="button"
@@ -459,7 +471,7 @@ export const CanvasHeader: React.FC<CanvasHeaderProps> = ({
                   </button>
                 ))}
               </div>
-            )}
+            </FloatingPortal>
           </div>
           <button
             type="button"

src/components/FlowEditor/editor/WorkflowFlowEditor.module.css

@@ -604,16 +604,11 @@
 }
 
 .canvasHeaderMenuDropdown {
-  position: absolute;
-  top: 100%;
-  left: 0;
-  z-index: 100;
   background: var(--bg-primary, #fff);
   border: 1px solid var(--border-color, #e0e0e0);
   border-radius: 6px;
   box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
   min-width: 11rem;
-  margin-top: 0.25rem;
 }
 
 .canvasHeaderMenuItem {

src/components/FormGenerator/FormGeneratorTable/FormGeneratorTable.module.css

@@ -4,7 +4,10 @@
   gap: 10px;
   width: 100%;
   font-family: var(--font-family);
-  min-height: 0;
+  /* Floor for the bounded chain: below this the table stops shrinking and the
+     nearest scroll ancestor (.viewContent / .outletShell) shows a scrollbar
+     instead of squeezing the table to invisibility on short viewports. */
+  min-height: var(--table-min-height, 280px);
   flex: 1;
   overflow: hidden;
   height: 100%;
@@ -325,17 +328,12 @@
 
 /* Filter dropdown */
 .filterDropdown {
-  position: absolute;
-  top: 100%;
-  left: 0;
   min-width: 200px;
   max-width: 320px;
   background: var(--color-bg);
   border: 1px solid var(--color-border, #e2e8f0);
   border-radius: 8px;
   box-shadow: 0 4px 16px rgba(0, 0, 0, 0.12);
-  z-index: 1000;
-  margin-top: 4px;
 }
 
 .filterDropdownHeader {
@@ -960,6 +958,26 @@ tbody .actionsColumn {
   font-size: 13px;
 }
 
+/* scrollMode: document — table grows to natural height, page scrolls */
+:global(html[data-scroll-mode="document"]) .formGeneratorTable {
+  height: auto;
+  min-height: 0;
+  max-height: none;
+  overflow: visible;
+  flex: 0 0 auto;
+}
+
+:global(html[data-scroll-mode="document"]) .tableWrapper {
+  max-height: none;
+  overflow: visible;
+}
+
+:global(html[data-scroll-mode="document"]) .tableContainer {
+  overflow: visible;
+  max-height: none;
+  flex: 0 0 auto;
+}
+
 /* Responsive */
 @media (max-width: 768px) {
   .formGeneratorTable {

src/components/FormGenerator/FormGeneratorTable/FormGeneratorTable.tsx

@@ -56,7 +56,7 @@
  *
  * See useOrgUsers / AdminUsersPage for a full reference implementation.
  */
-import React, { useState, useMemo, useRef, useEffect, useLayoutEffect, useCallback } from 'react';
+import React, { useState, useMemo, useRef, useEffect, useCallback } from 'react';
 import type { IconType } from 'react-icons';
 import { useLanguage } from '../../../providers/language/LanguageContext';
 import styles from './FormGeneratorTable.module.css';
@@ -73,6 +73,7 @@ import { applyFrontendFormat } from '../../../utils/applyFrontendFormat';
 import { FormGeneratorControls } from '../FormGeneratorControls';
 import { FilterSearchInput } from '../FilterSearchInput';
 import { CopyableTruncatedValue } from '../../UiComponents/CopyableTruncatedValue';
+import { FloatingPortal } from '../../UiComponents/FloatingPortal';
 import {
   isDateTimeType,
   isCheckboxType,
@@ -93,6 +94,12 @@ import {
   type TableListViewRow,
   type TableViewConfig,
 } from '../../../api/tableViewApi';
+import { useVisibilityRemeasure } from '../../../hooks/useVisibilityRemeasure';
+import {
+  buildTableFilterStorageKey,
+  loadTableFilterState,
+  saveTableFilterState,
+} from '../../../utils/tableFilterPersistence';
 
 function groupLevelsFromViewConfig(raw: unknown): GroupByLevelSpec[] {
   if (!Array.isArray(raw)) return [];
@@ -335,6 +342,11 @@ export interface FormGeneratorTableProps<T = any> {
    * and sends `viewKey` in list pagination. Examples: `files/list`, `connections`, `prompts`.
    */
   tableContextKey?: string;
+  /**
+   * Mandate/instance scope for filter+search localStorage persistence (L10).
+   * Fail-closed: when unset, filters are not persisted across sessions.
+   */
+  filterScopeKey?: string;
   /**
    * `sections`: one level of grouping → one paginated table per group below the category header
    * (requires hookData.fetchGroupSectionSummaries + refetchForSection).
@@ -708,6 +720,7 @@ export function FormGeneratorTable<T extends Record<string, any>>({
   onRowDragStart,
   compact = false,
   tableContextKey,
+  filterScopeKey,
   tableGroupLayoutMode = 'inline',
   localDataMode = false,
   viewKeyForQueries,
@@ -933,6 +946,34 @@ export function FormGeneratorTable<T extends Record<string, any>>({
   // Multi-column sorting: array of sort configs in order of priority
   const [sortConfigs, setSortConfigs] = useState<Array<{ key: string; direction: 'asc' | 'desc' }>>(initialSort ?? []);
   const [filters, setFilters] = useState<Record<string, any>>(initialFilters || {});
+  const filterPersistKey = useMemo(() => {
+    if (!filterScopeKey) return null;
+    const tableId = tableContextKey ?? apiEndpoint;
+    if (!tableId) return null;
+    return buildTableFilterStorageKey(filterScopeKey, tableId);
+  }, [filterScopeKey, tableContextKey, apiEndpoint]);
+  const filterPersistLoadedRef = useRef(false);
+
+  useEffect(() => {
+    if (!filterPersistKey || filterPersistLoadedRef.current) return;
+    const stored = loadTableFilterState(filterPersistKey);
+    if (stored) {
+      setFilters((prev) => ({ ...stored.filters, ...prev, ...(initialFilters || {}) }));
+      if (stored.searchTerm) {
+        setSearchTerm(stored.searchTerm);
+      }
+    }
+    filterPersistLoadedRef.current = true;
+  }, [filterPersistKey, initialFilters]);
+
+  useEffect(() => {
+    if (!filterPersistKey || !filterPersistLoadedRef.current) return;
+    const timer = setTimeout(() => {
+      saveTableFilterState(filterPersistKey, { filters, searchTerm });
+    }, 300);
+    return () => clearTimeout(timer);
+  }, [filterPersistKey, filters, searchTerm]);
+
   const [columnWidths, setColumnWidths] = useState<Record<string, number>>({});
   // Actions column width - resizable, default based on number of buttons
   const [actionsColumnWidth, setActionsColumnWidth] = useState<number | null>(null);
@@ -944,7 +985,7 @@ export function FormGeneratorTable<T extends Record<string, any>>({
   const [currentPage, setCurrentPage] = useState(1);
   const [currentPageSize, setCurrentPageSize] = useState(pageSize);
   const [openFilterColumn, setOpenFilterColumn] = useState<string | null>(null);
-  const filterDropdownRef = useRef<HTMLDivElement>(null);
+  const filterAnchorRef = useRef<HTMLButtonElement>(null);
 
   const reloadViews = useCallback(async () => {
     if (!tableContextKey) return;
@@ -1151,41 +1192,6 @@ export function FormGeneratorTable<T extends Record<string, any>>({
     [detectedColumns],
   );
 
-  useLayoutEffect(() => {
-    if (!openFilterColumn) return;
-    const dd = filterDropdownRef.current;
-    if (!dd) return;
-    const positionDropdown = () => {
-      const th = dd.closest('th');
-      if (!th) return;
-      const r = th.getBoundingClientRect();
-      const margin = 8;
-      const maxW = 320;
-      const w = Math.min(Math.max(dd.offsetWidth || maxW, 200), maxW, window.innerWidth - 2 * margin);
-      let left = r.left;
-      if (left + w > window.innerWidth - margin) {
-        left = window.innerWidth - margin - w;
-      }
-      if (left < margin) left = margin;
-      const approxH = dd.offsetHeight || 280;
-      let top = r.bottom + 4;
-      if (top + approxH > window.innerHeight - margin) {
-        top = Math.max(margin, r.top - 4 - approxH);
-      }
-      dd.style.position = 'fixed';
-      dd.style.left = `${left}px`;
-      dd.style.top = `${top}px`;
-      dd.style.right = 'auto';
-      dd.style.bottom = 'auto';
-      dd.style.width = `${w}px`;
-      dd.style.maxWidth = `${maxW}px`;
-      dd.style.zIndex = '2000';
-    };
-    positionDropdown();
-    const id = requestAnimationFrame(() => positionDropdown());
-    return () => cancelAnimationFrame(id);
-  }, [openFilterColumn]);
-  
   // Expanded groups for client-side groupBy rendering
   const [expandedGroups, setExpandedGroups] = useState<Set<string>>(new Set());
   const [groupsInitialized, setGroupsInitialized] = useState(false);
@@ -1416,24 +1422,27 @@ export function FormGeneratorTable<T extends Record<string, any>>({
   // Check if actions column exceeds 20% of container width (enable wrapping)
   const shouldWrapActionButtons = containerWidth > 0 && currentActionsWidth > containerWidth * 0.20;
   
+  const _updateContainerWidth = useCallback(() => {
+    const container = tableContainerRef.current;
+    if (container) {
+      setContainerWidth(container.clientWidth);
+    }
+  }, []);
+
   // Track container width changes
   useEffect(() => {
     const container = tableContainerRef.current;
     if (!container) return;
 
-    const updateContainerWidth = () => {
+    _updateContainerWidth();
-      setContainerWidth(container.clientWidth);
-    };
 
-    // Initial measurement
+    const resizeObserver = new ResizeObserver(_updateContainerWidth);
-    updateContainerWidth();
-    
-    // Observe resize
-    const resizeObserver = new ResizeObserver(updateContainerWidth);
     resizeObserver.observe(container);
 
     return () => resizeObserver.disconnect();
-  }, []);
+  }, [_updateContainerWidth]);
+
+  useVisibilityRemeasure(tableContainerRef, _updateContainerWidth);
   const resizingColumn = useRef<string | null>(null);
   const startX = useRef<number>(0);
   const startWidth = useRef<number>(0);
@@ -1771,20 +1780,6 @@ export function FormGeneratorTable<T extends Record<string, any>>({
     return [];
   }, [detectedColumns, asyncFilterValues, apiEndpoint, hookData, data, supportsBackendPagination]);
 
-  // Close filter dropdown when clicking outside
-  useEffect(() => {
-    const handleClickOutside = (event: MouseEvent) => {
-      if (filterDropdownRef.current && !filterDropdownRef.current.contains(event.target as Node)) {
-        setOpenFilterColumn(null);
-      }
-    };
-
-    if (openFilterColumn) {
-      document.addEventListener('mousedown', handleClickOutside);
-      return () => document.removeEventListener('mousedown', handleClickOutside);
-    }
-  }, [openFilterColumn]);
-
   // Toggle filter dropdown
   const toggleFilterDropdown = useCallback((columnKey: string, event: React.MouseEvent) => {
     event.stopPropagation(); // Prevent sort from triggering
@@ -2933,6 +2928,7 @@ export function FormGeneratorTable<T extends Record<string, any>>({
                       {/* Filter icon */}
                       {filterable && column.filterable !== false && (
                         <button
+                          ref={openFilterColumn === column.key ? filterAnchorRef : undefined}
                           className={`${styles.filterIcon} ${column.key in filters ? styles.filterActive : ''}`}
                           onClick={(e) => toggleFilterDropdown(column.key, e)}
                           title={column.key in filters
@@ -2980,8 +2976,13 @@ export function FormGeneratorTable<T extends Record<string, any>>({
                     
                     {/* Filter dropdown */}
                     {openFilterColumn === column.key && (
+                      <FloatingPortal
+                        open
+                        anchorRef={filterAnchorRef}
+                        onClose={() => setOpenFilterColumn(null)}
+                        placement="auto"
+                      >
                       <div
-                        ref={filterDropdownRef}
                         className={styles.filterDropdown}
                         onClick={(e) => e.stopPropagation()}
                       >
@@ -3152,6 +3153,7 @@ export function FormGeneratorTable<T extends Record<string, any>>({
                           })()}
                         </div>
                       </div>
+                      </FloatingPortal>
                     )}
                     
                     {resizable && (
@@ -3330,7 +3332,9 @@ export function FormGeneratorTable<T extends Record<string, any>>({
                       colSpan={(selectable ? 1 : 0) + (hasActionColumn ? 1 : 0) + detectedColumns.length}
                       style={{ textAlign: 'center', padding: '40px 16px', color: 'var(--text-muted, #64748b)' }}
                     >
-                      {emptyMessage || t('Keine Daten verfügbar')}
+                      {supportsBackendPagination && !hookDataProp?.pagination
+                        ? t('Lade Daten...')
+                        : (emptyMessage || t('Keine Daten verfügbar'))}
                     </td>
                   </tr>
                 )}

src/components/FormGenerator/FormGeneratorTree/FormGeneratorTree.module.css

@@ -543,6 +543,14 @@
   line-height: 1.5;
 }
 
+/* Collapsed section: take only header height instead of claiming flex space
+   from sibling trees in the same panel. */
+.collapsedRoot {
+  flex: 0 0 auto;
+  height: auto;
+  max-height: none;
+}
+
 /* Embedded workflow / compact pickers — fixed height so flex children (treeWrapper) get a real viewport */
 .embeddedPicker {
   display: flex;

src/components/FormGenerator/FormGeneratorTree/FormGeneratorTree.tsx

@@ -1206,6 +1206,7 @@ export function FormGeneratorTree<T = any>({
     styles.formGeneratorTree,
     compact && styles.compactMode,
     embedMaxHeight != null && styles.embeddedPicker,
+    collapsible && sectionCollapsed && styles.collapsedRoot,
     className,
   ]
     .filter(Boolean)

src/components/FormGenerator/TableViewsBar/TableViewsBar.module.css

@@ -42,10 +42,6 @@
 }
 
 .popover {
-  position: absolute;
-  top: calc(100% + 6px);
-  left: 0;
-  z-index: 4200;
   min-width: min(360px, calc(100vw - 24px));
   padding: 14px 14px 12px;
   border-radius: 12px;

src/components/FormGenerator/TableViewsBar/TableViewsBar.tsx

@@ -5,6 +5,7 @@ import { FaLayerGroup, FaTrash } from 'react-icons/fa';
 import { TbLayoutList, TbLayoutRows } from 'react-icons/tb';
 import { FiChevronsDown, FiChevronsUp } from 'react-icons/fi';
 import { useLanguage } from '../../../providers/language/LanguageContext';
+import { FloatingPortal } from '../../UiComponents/FloatingPortal';
 import styles from './TableViewsBar.module.css';
 
 export interface TableViewOption {
@@ -93,26 +94,18 @@ export function TableViewsBar({
 }: TableViewsBarProps) {
   const { t } = useLanguage();
   const [groupMenuOpen, setGroupMenuOpen] = useState(false);
-  const wrapRef = useRef<HTMLDivElement>(null);
+  const groupTriggerRef = useRef<HTMLButtonElement>(null);
   const [saveOpen, setSaveOpen] = useState(false);
   const [newName, setNewName] = useState('');
   const [saving, setSaving] = useState(false);
 
   useEffect(() => {
     if (!groupMenuOpen) return;
-    const onDoc = (e: MouseEvent) => {
-      const el = wrapRef.current;
-      if (el && !el.contains(e.target as Node)) setGroupMenuOpen(false);
-    };
     const onKey = (e: KeyboardEvent) => {
       if (e.key === 'Escape') setGroupMenuOpen(false);
     };
-    document.addEventListener('mousedown', onDoc);
     document.addEventListener('keydown', onKey);
-    return () => {
+    return () => document.removeEventListener('keydown', onKey);
-      document.removeEventListener('mousedown', onDoc);
-      document.removeEventListener('keydown', onKey);
-    };
   }, [groupMenuOpen]);
 
   const levelsForUi = useMemo(
@@ -196,8 +189,9 @@ export function TableViewsBar({
 
   return (
     <div className={styles.toolbar}>
-      <div ref={wrapRef} className={styles.popoverAnchor}>
+      <div className={styles.popoverAnchor}>
         <button
+          ref={groupTriggerRef}
           type="button"
           className={`${styles.groupTrigger} ${groupMenuOpen ? styles.groupTriggerOpen : ''}`}
           onClick={() => setGroupMenuOpen((o) => !o)}
@@ -207,7 +201,12 @@ export function TableViewsBar({
         >
           <FaLayerGroup className={styles.groupIcon} aria-hidden />
         </button>
-        {groupMenuOpen && (
+        <FloatingPortal
+          open={groupMenuOpen}
+          anchorRef={groupTriggerRef}
+          onClose={() => setGroupMenuOpen(false)}
+          placement="bottom"
+        >
           <div className={styles.popover} role="dialog" aria-label={t('Gruppieren nach')}>
             <div className={styles.popoverTitle}>{t('Gruppieren nach')}</div>
             <p className={styles.popoverHint}>{t('Wählen Sie eine Spalte und die Reihenfolge der Gruppen.')}</p>
@@ -256,7 +255,7 @@ export function TableViewsBar({
               {t('+ Weitere Ebene')}
             </button>
           </div>
-        )}
+        </FloatingPortal>
       </div>
 
       <span className={styles.activeSummary} title={summary}>

src/components/Layout/LayoutTabs.module.css

@@ -0,0 +1,325 @@
+/* Copyright (c) 2026 PowerOn AG */
+/* All rights reserved. */
+
+.container {
+  display: flex;
+  flex-direction: column;
+  width: 100%;
+  flex: 1;
+  min-height: 0;
+}
+
+/* ---------- Tab bar ---------- */
+
+.tabBar {
+  display: flex;
+  flex-wrap: nowrap;
+  gap: 0;
+  border-bottom: 2px solid var(--border-color, #e0e0e0);
+  flex: 1;
+  min-width: 0;
+  flex-shrink: 0;
+  overflow-x: auto;
+  scrollbar-width: none;
+}
+
+.tabBar::-webkit-scrollbar {
+  display: none;
+}
+
+/* ---------- Group ---------- */
+
+.group {
+  display: flex;
+  align-items: stretch;
+}
+
+.groupLabel {
+  display: flex;
+  align-items: center;
+  padding: 0 0.5rem;
+  font-size: 0.65rem;
+  font-weight: 600;
+  text-transform: uppercase;
+  letter-spacing: 0.05em;
+  color: var(--text-secondary, #999);
+  white-space: nowrap;
+  user-select: none;
+}
+
+.groupSeparator {
+  width: 1px;
+  margin: 0.5rem 0.25rem;
+  background: var(--border-color, #e0e0e0);
+}
+
+/* ---------- Tab button ---------- */
+
+.tab {
+  position: relative;
+  display: inline-flex;
+  align-items: center;
+  gap: 0.4rem;
+  padding: 0.625rem 1rem;
+  background: transparent;
+  border: none;
+  border-bottom: 2px solid transparent;
+  margin-bottom: -2px;
+  cursor: pointer;
+  font-family: inherit;
+  font-size: 0.875rem;
+  font-weight: 500;
+  color: var(--text-secondary, #666);
+  white-space: nowrap;
+  transition: color 0.15s ease, border-color 0.15s ease, background 0.15s ease;
+}
+
+.tab:hover {
+  color: var(--text-primary, #333);
+  background: var(--surface-color, rgba(0, 0, 0, 0.025));
+}
+
+.tab:focus-visible {
+  outline: 2px solid var(--primary-color, #007bff);
+  outline-offset: -2px;
+  border-radius: 4px 4px 0 0;
+}
+
+.tabActive {
+  color: var(--primary-color, #007bff);
+  border-bottom-color: var(--primary-color, #007bff);
+  background: var(--primary-light, rgba(37, 99, 235, 0.08));
+  font-weight: 600;
+  border-radius: 4px 4px 0 0;
+}
+
+.tab[aria-disabled="true"] {
+  color: var(--text-secondary, #999);
+  opacity: 0.5;
+  cursor: not-allowed;
+}
+
+/* ---------- Tab inner layout ---------- */
+
+.tabIcon {
+  display: inline-flex;
+  align-items: center;
+  flex-shrink: 0;
+  font-size: 1rem;
+}
+
+.tabLabel {
+  line-height: 1.3;
+}
+
+/* ---------- Grouped layout (each group on its own row) ---------- */
+
+.tabBarGrouped {
+  flex-wrap: wrap;
+  overflow-x: visible;
+  border-bottom: none;
+}
+
+/* Group label on its own row, tabs wrap below it. */
+.tabBarGrouped .group {
+  width: 100%;
+  display: flex;
+  flex-wrap: wrap;
+  align-items: stretch;
+  border-bottom: 1px solid var(--border-color, #e0e0e0);
+}
+
+.tabBarGrouped .group:last-child {
+  border-bottom-width: 2px;
+}
+
+.tabBarGrouped .groupLabel {
+  width: 100%;
+  display: flex;
+  align-items: center;
+  padding: 0.375rem 0 0.125rem;
+}
+
+/* Tabs within a grouped row wrap naturally */
+.tabBarGrouped .group .tab {
+  padding: 0.375rem 0.75rem;
+  border-bottom: none;
+  border-radius: 4px;
+  margin-bottom: 0.125rem;
+}
+
+.tabBarGrouped .group .tab.tabActive {
+  background: var(--primary-light, rgba(37, 99, 235, 0.1));
+  border-left: 3px solid var(--primary-color, #007bff);
+}
+
+/* ---------- Tab bar row (holds tab bar + toggle) ---------- */
+
+.tabBarRow {
+  display: flex;
+  align-items: flex-end;
+  gap: 0.25rem;
+  flex-shrink: 0;
+}
+
+.tabBarRowCollapsed {
+  align-items: center;
+  border-bottom: 2px solid var(--border-color, #e0e0e0);
+  padding: 0.25rem 0;
+}
+
+.collapsedLabel {
+  font-size: 0.8125rem;
+  font-weight: 500;
+  color: var(--text-secondary, #666);
+  padding: 0 0.25rem;
+}
+
+/* ---------- Collapsible toggle ---------- */
+
+.toggleBtn {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 2rem;
+  height: 2rem;
+  border: 1px solid var(--border-color, #d0d0d0);
+  border-radius: 4px;
+  background: var(--bg-primary, #fff);
+  color: var(--text-secondary, #888);
+  cursor: pointer;
+  font-size: 0.75rem;
+  flex-shrink: 0;
+  margin-left: auto;
+  margin-bottom: 2px;
+}
+
+.tabBarRowCollapsed .toggleBtn {
+  margin-bottom: 0;
+}
+
+.toggleBtn:hover {
+  background: var(--primary-light, #e0e7ff);
+  border-color: var(--primary-color, #2563eb);
+  color: var(--primary-color, #2563eb);
+}
+
+.toggleIcon {
+  pointer-events: none;
+}
+
+/* ---------- Tab panel ---------- */
+
+.panel {
+  flex: 1;
+  min-height: 0;
+  width: 100%;
+  display: flex;
+  flex-direction: column;
+  padding-top: 0.75rem;
+}
+
+/* Only in fill mode: tab content stretches to the bounded panel height. */
+.container:not(.containerNatural) .panel > * {
+  flex: 1;
+  min-height: 0;
+}
+
+/* ---------- Natural-height mode (fill=false) ----------
+   For use inside a scrolling page (StackLayout variant="scroll"): the tabs and
+   their content keep their natural height so the page scroll container handles
+   overflow instead of compressing the regions. */
+.containerNatural,
+.containerNatural .panel {
+  flex: 0 0 auto;
+  min-height: 0;
+}
+
+.containerNatural .panel {
+  overflow: visible;
+}
+
+/* ---------- Dark theme ---------- */
+
+:global(.dark-theme) .tabBar {
+  border-bottom-color: var(--border-color, #3a3a3a);
+}
+
+:global(.dark-theme) .groupLabel {
+  color: var(--text-secondary, #888);
+}
+
+:global(.dark-theme) .groupSeparator {
+  background: var(--border-color, #3a3a3a);
+}
+
+:global(.dark-theme) .tab {
+  color: var(--text-secondary, #aaa);
+}
+
+:global(.dark-theme) .tab:hover {
+  color: var(--text-primary, #e0e0e0);
+  background: var(--surface-color, rgba(255, 255, 255, 0.04));
+}
+
+:global(.dark-theme) .tabActive {
+  color: var(--primary-color, #4da3ff);
+  border-bottom-color: var(--primary-color, #4da3ff);
+  background: rgba(77, 163, 255, 0.1);
+}
+
+:global(.dark-theme) .tabBarGrouped .group .tab.tabActive {
+  background: rgba(77, 163, 255, 0.12);
+  border-left-color: var(--primary-color, #4da3ff);
+}
+
+:global(.dark-theme) .tab[aria-disabled="true"] {
+  color: var(--text-secondary, #666);
+}
+
+:global(.dark-theme) .tabSubtitle {
+  color: var(--text-secondary, #777);
+}
+
+:global(.dark-theme) .tabBarGrouped .group {
+  border-bottom-color: var(--border-color, #3a3a3a);
+}
+
+:global(.dark-theme) .tabBarRowCollapsed {
+  border-bottom-color: var(--border-color, #3a3a3a);
+}
+
+:global(.dark-theme) .collapsedLabel {
+  color: var(--text-secondary, #aaa);
+}
+
+:global(.dark-theme) .toggleBtn {
+  background: var(--bg-dark, #121212);
+  border-color: var(--border-dark, #444);
+  color: var(--text-secondary-dark, #aaa);
+}
+
+:global(.dark-theme) .toggleBtn:hover {
+  background: var(--primary-dark-bg, #1e3a5f);
+  border-color: var(--primary-color, #4da3ff);
+  color: var(--primary-light, #93c5fd);
+}
+
+/* ---------- Responsive ---------- */
+
+@media (max-width: 768px) {
+  .tabBar {
+    -webkit-overflow-scrolling: touch;
+    padding-bottom: 2px;
+  }
+
+  .tab {
+    padding: 0.5rem 0.75rem;
+    font-size: 0.8125rem;
+  }
+
+  .tabBarGrouped .groupLabel {
+    padding: 0.25rem 0;
+    font-size: 0.6rem;
+  }
+}

src/components/Layout/LayoutTabs.tsx

@@ -0,0 +1,327 @@
+// Copyright (c) 2026 PowerOn AG
+// All rights reserved.
+
+import {
+  useCallback,
+  useEffect,
+  useMemo,
+  useRef,
+  useState,
+  type KeyboardEvent,
+} from 'react';
+import { useSearchParams } from 'react-router-dom';
+import { FaChevronDown, FaChevronUp } from 'react-icons/fa';
+import type { LayoutTabItem, LayoutTabsProps } from './types';
+import { _createLocalStorageAdapter } from './persistence';
+import styles from './LayoutTabs.module.css';
+
+const _collapsePersistence = _createLocalStorageAdapter('layoutTabsCollapse');
+
+function _resolveAlias(
+  raw: string | null,
+  aliasMap: Record<string, string> | undefined,
+): string | null {
+  if (!raw) return null;
+  return aliasMap?.[raw] ?? raw;
+}
+
+function _findItem(
+  items: LayoutTabItem[],
+  id: string | null,
+): LayoutTabItem | undefined {
+  if (!id) return undefined;
+  return items.find((item) => item.id === id);
+}
+
+function _enabledItems(items: LayoutTabItem[]): LayoutTabItem[] {
+  return items.filter((item) => !item.disabled);
+}
+
+interface _Group {
+  key: string;
+  label: string | undefined;
+  items: LayoutTabItem[];
+}
+
+function _buildGroups(items: LayoutTabItem[]): _Group[] {
+  const groups: _Group[] = [];
+  let current: _Group | null = null;
+
+  for (const item of items) {
+    const groupKey = item.group ?? '';
+    if (!current || current.key !== groupKey) {
+      current = { key: groupKey, label: item.group, items: [] };
+      groups.push(current);
+    }
+    current.items.push(item);
+  }
+
+  return groups;
+}
+
+export function LayoutTabs({
+  items,
+  urlParam,
+  defaultTab,
+  preserveSearchParams = true,
+  aliasMap,
+  syncUrl,
+  lazy = false,
+  onTabChange,
+  className,
+  collapsible = false,
+  collapseKey,
+  defaultCollapsed = false,
+  fill = true,
+}: LayoutTabsProps) {
+  const shouldSyncUrl = syncUrl ?? !!urlParam;
+  const [searchParams, setSearchParams] = useSearchParams();
+
+  const _initialTab = useMemo(() => {
+    if (urlParam) {
+      const raw = searchParams.get(urlParam);
+      const resolved = _resolveAlias(raw, aliasMap);
+      const matched = _findItem(items, resolved);
+      if (matched && !matched.disabled) return matched.id;
+    }
+    if (defaultTab) {
+      const matched = _findItem(items, defaultTab);
+      if (matched && !matched.disabled) return matched.id;
+    }
+    return _enabledItems(items)[0]?.id ?? items[0]?.id ?? '';
+    // eslint-disable-next-line react-hooks/exhaustive-deps
+  }, []);
+
+  const [activeId, setActiveId] = useState(_initialTab);
+  const [mountedIds, setMountedIds] = useState<Set<string>>(
+    () => new Set([_initialTab]),
+  );
+
+  // Collapse state for the tab bar
+  const [tabBarCollapsed, setTabBarCollapsed] = useState(() => {
+    if (!collapsible) return false;
+    if (collapseKey) {
+      const stored = _collapsePersistence.load<boolean>(collapseKey);
+      if (stored !== null) return stored;
+    }
+    return defaultCollapsed;
+  });
+
+  const _toggleTabBar = useCallback(() => {
+    setTabBarCollapsed((prev) => {
+      const next = !prev;
+      if (collapseKey) _collapsePersistence.save(collapseKey, next);
+      return next;
+    });
+  }, [collapseKey]);
+
+  const tabRefs = useRef<Map<string, HTMLButtonElement>>(new Map());
+
+  const _setTab = useCallback(
+    (id: string) => {
+      setActiveId(id);
+
+      if (lazy) {
+        setMountedIds((prev) => {
+          if (prev.has(id)) return prev;
+          const next = new Set(prev);
+          next.add(id);
+          return next;
+        });
+      }
+
+      if (shouldSyncUrl && urlParam) {
+        setSearchParams(
+          (prev) => {
+            const next = preserveSearchParams
+              ? new URLSearchParams(prev)
+              : new URLSearchParams();
+            next.set(urlParam, id);
+            return next;
+          },
+          { replace: true },
+        );
+      }
+
+      onTabChange?.(id);
+    },
+    [shouldSyncUrl, urlParam, preserveSearchParams, setSearchParams, onTabChange, lazy],
+  );
+
+  useEffect(() => {
+    if (!urlParam || !shouldSyncUrl) return;
+    const raw = searchParams.get(urlParam);
+    const resolved = _resolveAlias(raw, aliasMap);
+    const matched = _findItem(items, resolved);
+    if (matched && !matched.disabled && matched.id !== activeId) {
+      setActiveId(matched.id);
+      if (lazy) {
+        setMountedIds((prev) => {
+          if (prev.has(matched.id)) return prev;
+          const next = new Set(prev);
+          next.add(matched.id);
+          return next;
+        });
+      }
+    }
+  }, [searchParams, urlParam, aliasMap, items, shouldSyncUrl, activeId, lazy]);
+
+  const enabled = useMemo(() => _enabledItems(items), [items]);
+
+  const _handleKeyDown = useCallback(
+    (e: KeyboardEvent<HTMLButtonElement>) => {
+      const idx = enabled.findIndex((item) => item.id === activeId);
+      let target: LayoutTabItem | undefined;
+
+      switch (e.key) {
+        case 'ArrowRight':
+          target = enabled[(idx + 1) % enabled.length];
+          break;
+        case 'ArrowLeft':
+          target = enabled[(idx - 1 + enabled.length) % enabled.length];
+          break;
+        case 'Home':
+          target = enabled[0];
+          break;
+        case 'End':
+          target = enabled[enabled.length - 1];
+          break;
+        default:
+          return;
+      }
+
+      if (target) {
+        e.preventDefault();
+        _setTab(target.id);
+        tabRefs.current.get(target.id)?.focus();
+      }
+    },
+    [enabled, activeId, _setTab],
+  );
+
+  const groups = useMemo(() => _buildGroups(items), [items]);
+  const hasGroups = groups.some((g) => !!g.label);
+  const panelId = `tabpanel-${activeId}`;
+  const activeItem = _findItem(items, activeId) ?? items[0];
+
+  if (!items.length) return null;
+
+  const showCollapsed = collapsible && tabBarCollapsed;
+
+  const _toggleButton = collapsible ? (
+    <button
+      type="button"
+      className={styles.toggleBtn}
+      aria-label={showCollapsed ? 'Tab-Auswahl einblenden' : 'Tab-Auswahl einklappen'}
+      aria-expanded={!showCollapsed}
+      onClick={_toggleTabBar}
+    >
+      {showCollapsed
+        ? <FaChevronDown className={styles.toggleIcon} aria-hidden />
+        : <FaChevronUp className={styles.toggleIcon} aria-hidden />}
+    </button>
+  ) : null;
+
+  return (
+    <div className={[styles.container, !fill && styles.containerNatural, className].filter(Boolean).join(' ')}>
+      <div
+        className={[
+          styles.tabBarRow,
+          showCollapsed && styles.tabBarRowCollapsed,
+        ].filter(Boolean).join(' ')}
+      >
+        {!showCollapsed ? (
+          <div
+            className={[styles.tabBar, hasGroups && styles.tabBarGrouped]
+              .filter(Boolean)
+              .join(' ')}
+            role="tablist"
+          >
+            {groups.map((group, gi) => (
+              <div key={group.key || gi} className={styles.group}>
+                {gi > 0 && !hasGroups && (
+                  <div className={styles.groupSeparator} aria-hidden />
+                )}
+                {group.label && (
+                  <span className={styles.groupLabel} aria-hidden>
+                    {group.label}
+                  </span>
+                )}
+                {group.items.map((item) => {
+                  const isActive = item.id === activeId;
+                  const tabId = `tab-${item.id}`;
+                  return (
+                    <button
+                      key={item.id}
+                      ref={(el) => {
+                        if (el) tabRefs.current.set(item.id, el);
+                        else tabRefs.current.delete(item.id);
+                      }}
+                      id={tabId}
+                      role="tab"
+                      type="button"
+                      aria-selected={isActive}
+                      aria-controls={panelId}
+                      aria-disabled={item.disabled || undefined}
+                      tabIndex={isActive ? 0 : -1}
+                      className={[styles.tab, isActive && styles.tabActive]
+                        .filter(Boolean)
+                        .join(' ')}
+                      onClick={() => {
+                        if (!item.disabled) _setTab(item.id);
+                      }}
+                      onKeyDown={_handleKeyDown}
+                    >
+                      {item.icon && (
+                        <span className={styles.tabIcon} aria-hidden>
+                          {item.icon}
+                        </span>
+                      )}
+                      <span className={styles.tabLabel}>{item.label}</span>
+                    </button>
+                  );
+                })}
+              </div>
+            ))}
+          </div>
+        ) : (
+          <span className={styles.collapsedLabel}>{activeItem?.label}</span>
+        )}
+        {_toggleButton}
+      </div>
+
+      <div
+        id={panelId}
+        role="tabpanel"
+        aria-labelledby={`tab-${activeId}`}
+        className={styles.panel}
+      >
+        {lazy
+          ? items.map((item) =>
+              mountedIds.has(item.id) ? (
+                <div
+                  key={item.id}
+                  style={
+                    item.id === activeId
+                      ? fill
+                        ? {
+                            display: 'flex',
+                            flexDirection: 'column' as const,
+                            flex: 1,
+                            minHeight: 0,
+                          }
+                        : { display: 'block' }
+                      : { display: 'none' }
+                  }
+                >
+                  {item.render()}
+                </div>
+              ) : null,
+            )
+          : activeItem?.render()}
+      </div>
+    </div>
+  );
+}
+
+export default LayoutTabs;

src/components/Layout/Panel.module.css

@@ -0,0 +1,193 @@
+/** Panel — typed region container with optional collapsible header. */
+
+.panel {
+  border: 1px solid var(--border-color, rgba(0, 0, 0, 0.12));
+  border-radius: 8px;
+  background: var(--bg-primary, #fff);
+  overflow: clip;
+  display: flex;
+  flex-direction: column;
+  min-height: 0;
+}
+
+/* Card regions in bounded flex hosts (sidebar, PanelLayout pane): body fills and scrolls. */
+.panel[data-variant="card"] .body:not(.bodyHidden) {
+  flex: 1;
+  min-height: 0;
+  overflow: auto;
+  display: flex;
+  flex-direction: column;
+}
+
+/* --- Variant: table — fills available height, bounded scroll --- */
+.panel[data-variant="table"] {
+  flex: 1;
+  min-height: 0;
+  display: flex;
+  flex-direction: column;
+}
+
+.panel[data-variant="table"] .body {
+  flex: 1;
+  min-height: 0;
+  padding: 0;
+  display: flex;
+  flex-direction: column;
+}
+
+/* --- Variant: dashboard — natural height, grid-friendly --- */
+.panel[data-variant="dashboard"] .body {
+  padding: 14px;
+}
+
+/* --- Variant: toolbar — compact, no border-radius, minimal chrome --- */
+.panel[data-variant="toolbar"] {
+  border-radius: 0;
+  border-left: none;
+  border-right: none;
+}
+
+.panel[data-variant="toolbar"] .body {
+  padding: 8px 14px;
+}
+
+/* Toolbars are chrome (filter/action bars), not collapsible content regions.
+   title/id are still required for identification + a11y, but no visible header
+   bar is rendered to avoid duplicate headers above existing toolbar content. */
+.panel[data-variant="toolbar"] .header {
+  display: none;
+}
+
+/* --- Generic fill — any variant can grow to fill a bounded region --- */
+.panel[data-fill="true"] {
+  flex: 1;
+  min-height: 0;
+  min-width: 0;
+  display: flex;
+  flex-direction: column;
+}
+
+.panel[data-fill="true"] .body {
+  flex: 1;
+  min-height: 0;
+  display: flex;
+  flex-direction: column;
+  overflow: hidden;
+}
+
+/* --- Variant: editor — full height, no body padding --- */
+.panel[data-variant="editor"] {
+  flex: 1;
+  min-height: 0;
+  display: flex;
+  flex-direction: column;
+  overflow: visible;
+}
+
+.panel[data-variant="editor"] .body {
+  flex: 1;
+  min-height: 0;
+  padding: 0;
+  display: flex;
+  flex-direction: column;
+  overflow: visible;
+}
+
+/* --- Variant: wizard — step container --- */
+.panel[data-variant="wizard"] .body {
+  padding: 20px;
+}
+
+.header {
+  display: flex;
+  align-items: center;
+  gap: 8px;
+  padding: 10px 14px;
+  background: var(--bg-secondary, rgba(0, 0, 0, 0.02));
+  border-bottom: 1px solid var(--border-color, rgba(0, 0, 0, 0.08));
+  min-height: 40px;
+  position: relative;
+}
+
+.headerCollapsible {
+  cursor: pointer;
+  user-select: none;
+  /* Reserve space so action icons never overlap the collapse chevron */
+  padding-right: 30px;
+}
+
+.headerCollapsible:hover {
+  background: var(--bg-hover, rgba(0, 0, 0, 0.04));
+}
+
+.titles {
+  flex: 1;
+  min-width: 0;
+  display: flex;
+  flex-direction: column;
+  gap: 1px;
+}
+
+.title {
+  font-size: 14px;
+  font-weight: 600;
+  color: var(--text-primary, #1a1a1a);
+  line-height: 1.3;
+}
+
+.subtitle {
+  font-size: 12px;
+  font-weight: 400;
+  color: var(--text-secondary, #666);
+  line-height: 1.3;
+}
+
+.actions {
+  flex-shrink: 1;
+  min-width: 0;
+  display: flex;
+  align-items: center;
+  gap: 4px;
+  margin-left: auto;
+}
+
+/* Collapse chevron: always rightmost, above action icons (never covered). */
+.chevron {
+  position: absolute;
+  right: 14px;
+  top: 50%;
+  transform: translateY(-50%);
+  flex-shrink: 0;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 16px;
+  height: 16px;
+  font-size: 12px;
+  color: var(--text-tertiary, #888);
+  z-index: 2;
+  pointer-events: none;
+}
+
+.body {
+  padding: 14px;
+}
+
+.bodyHidden {
+  display: none;
+}
+
+/* Dark theme */
+:global(.dark-theme) .panel {
+  border-color: var(--border-color, rgba(255, 255, 255, 0.1));
+  background: var(--bg-primary, #1e1e1e);
+}
+
+:global(.dark-theme) .header {
+  background: var(--bg-secondary, rgba(255, 255, 255, 0.03));
+  border-bottom-color: var(--border-color, rgba(255, 255, 255, 0.06));
+}
+
+:global(.dark-theme) .headerCollapsible:hover {
+  background: var(--bg-hover, rgba(255, 255, 255, 0.05));
+}

src/components/Layout/Panel.tsx

@@ -0,0 +1,90 @@
+// Copyright (c) 2026 PowerOn AG
+// All rights reserved.
+import { type FC, useState, useEffect, useCallback } from 'react';
+import { useLocation } from 'react-router-dom';
+import { FaChevronDown, FaChevronRight } from 'react-icons/fa';
+import type { PanelProps } from './types';
+import styles from './Panel.module.css';
+
+function _loadCollapsed(key: string, fallback: boolean): boolean {
+  try {
+    const stored = localStorage.getItem(`panel-collapse:${key}`);
+    if (stored !== null) return stored === '1';
+  } catch { /* noop */ }
+  return fallback;
+}
+
+function _saveCollapsed(key: string, value: boolean): void {
+  try {
+    localStorage.setItem(`panel-collapse:${key}`, value ? '1' : '0');
+  } catch { /* noop */ }
+}
+
+export const Panel: FC<PanelProps> = ({
+  variant = 'card',
+  title,
+  id,
+  subtitle,
+  actions,
+  collapsible = true,
+  defaultCollapsed = false,
+  collapseKey,
+  className = '',
+  style,
+  fill = false,
+  children,
+}) => {
+  const { pathname } = useLocation();
+  const persistKey = collapseKey ?? `${pathname}:${id}`;
+  const [collapsed, setCollapsed] = useState(() => _loadCollapsed(persistKey, defaultCollapsed));
+
+  useEffect(() => {
+    _saveCollapsed(persistKey, collapsed);
+  }, [persistKey, collapsed]);
+
+  const _toggleCollapsed = useCallback(() => {
+    if (collapsible) setCollapsed((prev) => !prev);
+  }, [collapsible]);
+
+  return (
+    <div
+      className={`${styles.panel} ${collapsed ? styles.panelCollapsed : ''} ${className}`}
+      data-variant={variant}
+      data-fill={fill ? 'true' : undefined}
+      data-panel-id={id}
+      style={style}
+    >
+      <div
+        className={`${styles.header} ${collapsible ? styles.headerCollapsible : ''}`}
+        role={collapsible ? 'button' : undefined}
+        tabIndex={collapsible ? 0 : undefined}
+        aria-expanded={collapsible ? !collapsed : undefined}
+        onClick={_toggleCollapsed}
+        onKeyDown={
+          collapsible
+            ? (e) => {
+                if (e.key === 'Enter' || e.key === ' ') {
+                  e.preventDefault();
+                  _toggleCollapsed();
+                }
+              }
+            : undefined
+        }
+      >
+        <div className={styles.titles}>
+          <span className={styles.title}>{title}</span>
+          {subtitle && <span className={styles.subtitle}>{subtitle}</span>}
+        </div>
+        {collapsible && (
+          <span className={styles.chevron} aria-hidden>
+            {collapsed ? <FaChevronRight /> : <FaChevronDown />}
+          </span>
+        )}
+        {actions && <div className={styles.actions} onClick={(e) => e.stopPropagation()}>{actions}</div>}
+      </div>
+      <div className={`${styles.body} ${collapsed ? styles.bodyHidden : ''}`}>
+        {children}
+      </div>
+    </div>
+  );
+};

src/components/Layout/PanelLayout.module.css

@@ -0,0 +1,98 @@
+.root {
+  display: flex;
+  flex: 1;
+  min-height: 0;
+  min-width: 0;
+  overflow: hidden;
+}
+
+.root[data-direction="vertical"] {
+  flex-direction: column;
+}
+
+.pane {
+  display: flex;
+  flex-direction: column;
+  min-height: 0;
+  min-width: 0;
+}
+
+.root[data-direction="horizontal"] .pane:not(.paneCollapsed) {
+  flex-direction: row;
+}
+
+.paneCollapsed {
+  flex: 0 0 auto !important;
+  overflow: hidden;
+  flex-direction: column;
+}
+
+.paneBody {
+  flex: 1;
+  min-height: 0;
+  min-width: 0;
+  display: flex;
+  flex-direction: column;
+}
+
+/* Generic region-fill: a pane hosts a single region object, which should
+   always grow to fill the pane (height + width) so tables/trees/etc. are
+   usable instead of clipped. */
+.paneBody > * {
+  flex: 1 1 0;
+  min-height: 0;
+  min-width: 0;
+}
+
+.paneBodyHidden {
+  display: none;
+}
+
+.collapseToggle {
+  flex-shrink: 0;
+  align-self: stretch;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 28px;
+  min-width: 28px;
+  margin: 0;
+  padding: 0;
+  border: none;
+  border-right: 1px solid var(--border-color, rgba(0, 0, 0, 0.12));
+  border-radius: 0;
+  background: var(--bg-secondary, #f5f5f5);
+  color: var(--text-secondary, #666);
+  cursor: pointer;
+  font-size: 12px;
+  line-height: 1;
+}
+
+.paneCollapsed .collapseToggle {
+  border-right: none;
+  border-bottom: 1px solid var(--border-color, rgba(0, 0, 0, 0.12));
+}
+
+.collapseToggle:hover {
+  background: var(--bg-hover, #ebebeb);
+}
+
+.divider {
+  flex-shrink: 0;
+  background: var(--border-color, rgba(0, 0, 0, 0.12));
+  z-index: 2;
+}
+
+.dividerHorizontal {
+  width: 4px;
+  cursor: col-resize;
+}
+
+.dividerVertical {
+  height: 4px;
+  cursor: row-resize;
+}
+
+.dividerDragging {
+  background: var(--primary-color, #2563eb);
+}

src/components/Layout/PanelLayout.tsx

@@ -0,0 +1,298 @@
+// Copyright (c) 2026 PowerOn AG
+// All rights reserved.
+/**
+ * PanelLayout — config-driven horizontal/vertical split layout (MVP).
+ *
+ * Supports 2+ resizable panes with optional collapse and localStorage persistence.
+ * Nested split trees can be composed by nesting PanelLayout instances in pane content.
+ */
+
+import {
+  useCallback,
+  useEffect,
+  useMemo,
+  useRef,
+  useState,
+  type CSSProperties,
+  type FC,
+  type MouseEvent as ReactMouseEvent,
+} from 'react';
+import { FaChevronLeft, FaChevronRight, FaChevronUp, FaChevronDown } from 'react-icons/fa';
+import type { PanelLayoutPaneConfig, PanelLayoutProps } from './types';
+import { useVisibilityRemeasure } from '../../hooks/useVisibilityRemeasure';
+import { useLanguage } from '../../providers/language/LanguageContext';
+import styles from './PanelLayout.module.css';
+
+const STORAGE_PREFIX = 'po_panel_layout:';
+
+function _loadCollapsed(key: string | undefined, fallback: boolean): boolean {
+  if (!key) return fallback;
+  try {
+    const stored = localStorage.getItem(`panel-collapse:${key}`);
+    if (stored !== null) return stored === '1';
+  } catch { /* noop */ }
+  return fallback;
+}
+
+function _saveCollapsed(key: string | undefined, value: boolean): void {
+  if (!key) return;
+  try {
+    localStorage.setItem(`panel-collapse:${key}`, value ? '1' : '0');
+  } catch { /* noop */ }
+}
+
+function _normalizeSizes(sizes: number[]): number[] {
+  const total = sizes.reduce((sum, s) => sum + s, 0);
+  if (total <= 0) return sizes.map(() => 100 / sizes.length);
+  return sizes.map((s) => (s / total) * 100);
+}
+
+function _loadSizes(persistenceKey: string, panes: PanelLayoutPaneConfig[]): number[] {
+  const defaults = panes.map((p) => p.defaultSize ?? 100 / panes.length);
+  try {
+    const raw = localStorage.getItem(`${STORAGE_PREFIX}${persistenceKey}`);
+    if (!raw) return _normalizeSizes(defaults);
+    const parsed = JSON.parse(raw) as number[];
+    if (!Array.isArray(parsed) || parsed.length !== panes.length) {
+      return _normalizeSizes(defaults);
+    }
+    return _normalizeSizes(parsed);
+  } catch {
+    return _normalizeSizes(defaults);
+  }
+}
+
+function _saveSizes(persistenceKey: string, sizes: number[]): void {
+  try {
+    localStorage.setItem(`${STORAGE_PREFIX}${persistenceKey}`, JSON.stringify(sizes));
+  } catch { /* noop */ }
+}
+
+function _clampPaneSize(
+  pane: PanelLayoutPaneConfig,
+  size: number,
+): number {
+  const min = pane.minSize ?? 10;
+  const max = pane.maxSize ?? 80;
+  return Math.max(min, Math.min(max, size));
+}
+
+export const PanelLayout: FC<PanelLayoutProps> = ({
+  persistenceKey,
+  direction = 'horizontal',
+  panes,
+  className = '',
+}) => {
+  const { t } = useLanguage();
+  const containerRef = useRef<HTMLDivElement>(null);
+  const [sizes, setSizes] = useState<number[]>(() => _loadSizes(persistenceKey, panes));
+  const [collapsedById, setCollapsedById] = useState<Record<string, boolean>>(() => {
+    const initial: Record<string, boolean> = {};
+    for (const pane of panes) {
+      initial[pane.id] = _loadCollapsed(pane.collapseKey, pane.defaultCollapsed ?? false);
+    }
+    return initial;
+  });
+  const [draggingIndex, setDraggingIndex] = useState<number | null>(null);
+  const dragRef = useRef<{ index: number; startPos: number; startSizes: number[]; containerSize: number } | null>(null);
+
+  useEffect(() => {
+    setSizes(_loadSizes(persistenceKey, panes));
+  }, [persistenceKey, panes.length]);
+
+  useEffect(() => {
+    if (draggingIndex === null) {
+      _saveSizes(persistenceKey, sizes);
+    }
+  }, [sizes, persistenceKey, draggingIndex]);
+
+  const _toggleCollapsed = useCallback((pane: PanelLayoutPaneConfig) => {
+    setCollapsedById((prev) => {
+      const next = !prev[pane.id];
+      _saveCollapsed(pane.collapseKey, next);
+      return { ...prev, [pane.id]: next };
+    });
+  }, []);
+
+  const _handleDividerMouseDown = useCallback((index: number, e: ReactMouseEvent) => {
+    e.preventDefault();
+    const container = containerRef.current;
+    if (!container) return;
+
+    const rect = container.getBoundingClientRect();
+    const containerSize = direction === 'horizontal' ? rect.width : rect.height;
+    const startPos = direction === 'horizontal' ? e.clientX : e.clientY;
+
+    dragRef.current = { index, startPos, startSizes: [...sizes], containerSize };
+    setDraggingIndex(index);
+  }, [direction, sizes]);
+
+  useEffect(() => {
+    if (draggingIndex === null) return;
+
+    const _onMouseMove = (e: MouseEvent) => {
+      const drag = dragRef.current;
+      if (!drag) return;
+
+      const currentPos = direction === 'horizontal' ? e.clientX : e.clientY;
+      const deltaPercent = ((currentPos - drag.startPos) / drag.containerSize) * 100;
+      const next = [...drag.startSizes];
+      const leftPane = panes[drag.index];
+      const rightPane = panes[drag.index + 1];
+
+      let leftSize = next[drag.index] + deltaPercent;
+      let rightSize = next[drag.index + 1] - deltaPercent;
+
+      leftSize = _clampPaneSize(leftPane, leftSize);
+      rightSize = _clampPaneSize(rightPane, rightSize);
+
+      const pairTotal = drag.startSizes[drag.index] + drag.startSizes[drag.index + 1];
+      const adjustedTotal = leftSize + rightSize;
+      if (Math.abs(adjustedTotal - pairTotal) > 0.01) {
+        const scale = pairTotal / adjustedTotal;
+        leftSize *= scale;
+        rightSize *= scale;
+      }
+
+      next[drag.index] = leftSize;
+      next[drag.index + 1] = rightSize;
+      setSizes(_normalizeSizes(next));
+    };
+
+    const _onMouseUp = () => {
+      dragRef.current = null;
+      setDraggingIndex(null);
+      document.body.style.cursor = '';
+      document.body.style.userSelect = '';
+    };
+
+    document.addEventListener('mousemove', _onMouseMove);
+    document.addEventListener('mouseup', _onMouseUp);
+    document.body.style.cursor = direction === 'horizontal' ? 'col-resize' : 'row-resize';
+    document.body.style.userSelect = 'none';
+
+    return () => {
+      document.removeEventListener('mousemove', _onMouseMove);
+      document.removeEventListener('mouseup', _onMouseUp);
+      document.body.style.cursor = '';
+      document.body.style.userSelect = '';
+    };
+  }, [draggingIndex, direction, panes]);
+
+  const _remeasure = useCallback(() => {
+    containerRef.current?.dispatchEvent(new Event('panel-layout-remeasure'));
+  }, []);
+
+  useVisibilityRemeasure(containerRef, _remeasure);
+
+  const paneStyle = useCallback((pane: PanelLayoutPaneConfig, index: number): CSSProperties => {
+    const collapsed = collapsedById[pane.id] && pane.collapsible;
+    if (collapsed) {
+      const collapsedPx = pane.collapsedSize ?? 40;
+      return direction === 'horizontal'
+        ? { flex: `0 0 ${collapsedPx}px`, width: collapsedPx }
+        : { flex: `0 0 ${collapsedPx}px`, height: collapsedPx };
+    }
+    const percent = sizes[index] ?? 100 / panes.length;
+    return { flex: `${percent} 1 0`, minWidth: 0, minHeight: 0 };
+  }, [collapsedById, direction, panes.length, sizes]);
+
+  const dividerClass = useMemo(
+    () => `${styles.divider} ${direction === 'horizontal' ? styles.dividerHorizontal : styles.dividerVertical}`,
+    [direction],
+  );
+
+  if (panes.length < 2) {
+    throw new Error('PanelLayout requires at least 2 panes');
+  }
+
+  return (
+    <div
+      ref={containerRef}
+      className={`${styles.root} ${className}`}
+      data-direction={direction}
+      role="group"
+    >
+      {panes.map((pane, index) => (
+        <PaneSlot
+          key={pane.id}
+          pane={pane}
+          style={paneStyle(pane, index)}
+          collapsed={!!collapsedById[pane.id] && !!pane.collapsible}
+          onToggleCollapse={() => _toggleCollapsed(pane)}
+          collapseLabel={t('Panel einklappen')}
+          expandLabel={t('Panel ausklappen')}
+          direction={direction}
+          showDivider={index < panes.length - 1}
+          dividerClass={`${dividerClass} ${draggingIndex === index ? styles.dividerDragging : ''}`}
+          onDividerMouseDown={(e) => _handleDividerMouseDown(index, e)}
+        />
+      ))}
+    </div>
+  );
+};
+
+interface PaneSlotProps {
+  pane: PanelLayoutPaneConfig;
+  style: CSSProperties;
+  collapsed: boolean;
+  onToggleCollapse: () => void;
+  collapseLabel: string;
+  expandLabel: string;
+  direction: 'horizontal' | 'vertical';
+  showDivider: boolean;
+  dividerClass: string;
+  onDividerMouseDown: (e: ReactMouseEvent) => void;
+}
+
+const PaneSlot: FC<PaneSlotProps> = ({
+  pane,
+  style,
+  collapsed,
+  onToggleCollapse,
+  collapseLabel,
+  expandLabel,
+  direction,
+  showDivider,
+  dividerClass,
+  onDividerMouseDown,
+}) => {
+  const _collapseIcon = direction === 'horizontal'
+    ? (collapsed ? <FaChevronRight aria-hidden /> : <FaChevronLeft aria-hidden />)
+    : (collapsed ? <FaChevronDown aria-hidden /> : <FaChevronUp aria-hidden />);
+
+  return (
+  <>
+    <div
+      className={`${styles.pane} ${collapsed ? styles.paneCollapsed : ''}`}
+      style={style}
+      data-pane-id={pane.id}
+    >
+      {pane.collapsible && (
+        <button
+          type="button"
+          className={styles.collapseToggle}
+          onClick={onToggleCollapse}
+          aria-expanded={!collapsed}
+          aria-label={collapsed ? expandLabel : collapseLabel}
+        >
+          {_collapseIcon}
+        </button>
+      )}
+      <div className={`${styles.paneBody} ${collapsed ? styles.paneBodyHidden : ''}`}>
+        {pane.content}
+      </div>
+    </div>
+    {showDivider && (
+      <div
+        className={dividerClass}
+        role="separator"
+        aria-orientation="vertical"
+        onMouseDown={onDividerMouseDown}
+      />
+    )}
+  </>
+  );
+};
+
+export default PanelLayout;

src/components/Layout/StackLayout.module.css

@@ -0,0 +1,110 @@
+/** StackLayout — structural flex-column container with named regions. */
+
+.root {
+  display: flex;
+  flex-direction: column;
+  height: 100%;
+  min-height: 0;
+}
+
+/* ------------------------------------------------------------------ */
+/* Regions                                                             */
+/* ------------------------------------------------------------------ */
+
+.header {
+  flex-shrink: 0;
+}
+
+.toolbar {
+  flex-shrink: 0;
+}
+
+.tabs {
+  flex-shrink: 0;
+}
+
+.body {
+  flex: 1;
+  min-height: 0;
+  display: flex;
+  flex-direction: column;
+}
+
+.footer {
+  flex-shrink: 0;
+}
+
+/* ------------------------------------------------------------------ */
+/* Variant overrides on body                                           */
+/* ------------------------------------------------------------------ */
+
+.bodyTable {
+  overflow: visible;
+}
+
+.bodyScroll {
+  overflow-y: auto;
+}
+
+.bodyForm {
+  overflow-y: auto;
+  padding: 16px 20px;
+}
+
+/* Scroll/form layouts: regions keep their natural height and the body scrolls,
+   instead of flex-shrinking children below their content (which clips data). */
+.bodyScroll > *,
+.bodyForm > * {
+  flex-shrink: 0;
+}
+
+.bodyDashboard {
+  flex: 0 0 auto;
+  overflow: visible;
+  display: flex;
+  flex-direction: column;
+  gap: 16px;
+  padding-bottom: 24px;
+}
+
+/* Dashboard root keeps its bounded height but scrolls its own content */
+.root[data-variant="dashboard"] {
+  overflow-y: auto;
+}
+
+/* ------------------------------------------------------------------ */
+/* Document scroll-mode: body becomes overflow:visible                  */
+/* ------------------------------------------------------------------ */
+
+:global(html[data-scroll-mode="document"]) .root {
+  height: auto;
+}
+
+:global(html[data-scroll-mode="document"]) .bodyTable,
+:global(html[data-scroll-mode="document"]) .bodyScroll,
+:global(html[data-scroll-mode="document"]) .bodyForm,
+:global(html[data-scroll-mode="document"]) .bodyDashboard {
+  overflow: visible;
+}
+
+/* ------------------------------------------------------------------ */
+/* Dark theme                                                          */
+/* ------------------------------------------------------------------ */
+
+:global(.dark-theme) .root {
+  color: var(--text-primary, #e0e0e0);
+}
+
+/* ------------------------------------------------------------------ */
+/* Responsive: tighten padding on small screens                        */
+/* ------------------------------------------------------------------ */
+
+@media (max-width: 600px) {
+  .bodyForm {
+    padding: 12px 10px;
+  }
+
+  .bodyDashboard {
+    gap: 10px;
+  }
+}

src/components/Layout/StackLayout.tsx

@@ -0,0 +1,105 @@
+// Copyright (c) 2026 PowerOn AG
+// All rights reserved.
+import React, { type FC, type ReactNode, Children, isValidElement, cloneElement, useRef } from 'react';
+import type { StackLayoutProps, StackLayoutVariant } from './types';
+import { useScrollMode } from '../../hooks/useScrollMode';
+import { useScrollRestoration } from '../../hooks/useScrollRestoration';
+import styles from './StackLayout.module.css';
+
+// ---------------------------------------------------------------------------
+// Sub-components (compound component pattern)
+// ---------------------------------------------------------------------------
+
+interface SlotProps {
+  className?: string;
+  children: ReactNode;
+}
+
+const Header: FC<SlotProps> = ({ className = '', children }) => (
+  <div className={`${styles.header} ${className}`}>{children}</div>
+);
+
+const Toolbar: FC<SlotProps> = ({ className = '', children }) => (
+  <div className={`${styles.toolbar} ${className}`}>{children}</div>
+);
+
+const Tabs: FC<SlotProps> = ({ className = '', children }) => (
+  <div className={`${styles.tabs} ${className}`}>{children}</div>
+);
+
+const Body: FC<SlotProps> = ({ className = '', children }) => (
+  <div className={className}>{children}</div>
+);
+
+const Footer: FC<SlotProps> = ({ className = '', children }) => (
+  <div className={`${styles.footer} ${className}`}>{children}</div>
+);
+
+// ---------------------------------------------------------------------------
+// Variant → CSS class mapping
+// ---------------------------------------------------------------------------
+
+const _variantBodyClass: Record<StackLayoutVariant, string> = {
+  table: styles.bodyTable,
+  scroll: styles.bodyScroll,
+  form: styles.bodyForm,
+  dashboard: styles.bodyDashboard,
+};
+
+// ---------------------------------------------------------------------------
+// Root component
+// ---------------------------------------------------------------------------
+
+interface StackLayoutComponent extends FC<StackLayoutProps> {
+  Header: FC<SlotProps>;
+  Toolbar: FC<SlotProps>;
+  Tabs: FC<SlotProps>;
+  Body: FC<SlotProps>;
+  Footer: FC<SlotProps>;
+}
+
+const _StackLayoutRoot: FC<StackLayoutProps> = ({
+  variant = 'scroll',
+  className = '',
+  children,
+}) => {
+  const scrollMode = useScrollMode();
+  const rootRef = useRef<HTMLDivElement>(null);
+  useScrollRestoration(rootRef);
+
+  return (
+    <div
+      ref={rootRef}
+      className={`${styles.root} ${className}`}
+      data-scroll-mode={scrollMode}
+      data-variant={variant}
+    >
+      {_processChildren(children, variant)}
+    </div>
+  );
+};
+
+function _processChildren(children: ReactNode, variant: StackLayoutVariant): ReactNode {
+  const bodyClass = `${styles.body} ${_variantBodyClass[variant]}`;
+
+  return Children.map(children, (child: ReactNode) => {
+    if (!isValidElement(child)) return child;
+    if (child.type === Body) {
+      return cloneElement(child as React.ReactElement<SlotProps>, {
+        className: `${bodyClass} ${(child.props as SlotProps).className ?? ''}`,
+      });
+    }
+    return child;
+  });
+}
+
+// ---------------------------------------------------------------------------
+// Assemble compound component
+// ---------------------------------------------------------------------------
+
+export const StackLayout = _StackLayoutRoot as StackLayoutComponent;
+StackLayout.Header = Header;
+StackLayout.Toolbar = Toolbar;
+StackLayout.Tabs = Tabs;
+StackLayout.Body = Body;
+StackLayout.Footer = Footer;

src/components/Layout/ViewStack.module.css

@@ -0,0 +1,110 @@
+.viewStack {
+  display: flex;
+  flex-direction: column;
+  width: 100%;
+  flex: 1;
+  min-height: 0;
+}
+
+.viewContent {
+  display: flex;
+  flex-direction: column;
+  flex: 1;
+  min-height: 0;
+}
+
+.detailHeader {
+  display: flex;
+  align-items: center;
+  gap: 0.75rem;
+  padding: 0.75rem 1rem;
+  border-bottom: 1px solid var(--border-color, #e0e0e0);
+  background: var(--bg-primary, #ffffff);
+  flex-shrink: 0;
+}
+
+.backButton {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.375rem;
+  padding: 0.375rem 0.75rem;
+  background: transparent;
+  border: 1px solid var(--border-color, #e0e0e0);
+  border-radius: 6px;
+  cursor: pointer;
+  font-size: 0.875rem;
+  font-weight: 500;
+  color: var(--text-secondary, #666);
+  transition: all 0.15s ease;
+  white-space: nowrap;
+}
+
+.backButton:hover {
+  color: var(--text-primary, #333);
+  border-color: var(--primary-color, #007bff);
+  background: rgba(0, 0, 0, 0.02);
+}
+
+.backButton:active {
+  transform: scale(0.97);
+}
+
+.backArrow {
+  font-size: 1rem;
+  line-height: 1;
+}
+
+.detailTitle {
+  flex: 1;
+  font-size: 1.125rem;
+  font-weight: 600;
+  color: var(--text-primary, #1a1a1a);
+  margin: 0;
+  min-width: 0;
+  overflow: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+
+.detailActions {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  flex-shrink: 0;
+}
+
+:global(.dark-theme) .detailHeader {
+  border-bottom-color: var(--border-color, #333);
+  background: var(--bg-primary, #1a1a1a);
+}
+
+:global(.dark-theme) .backButton {
+  color: var(--text-secondary, #aaa);
+  border-color: var(--border-color, #444);
+}
+
+:global(.dark-theme) .backButton:hover {
+  color: var(--text-primary, #eee);
+  border-color: var(--primary-color, #4da3ff);
+  background: rgba(255, 255, 255, 0.04);
+}
+
+:global(.dark-theme) .detailTitle {
+  color: var(--text-primary, #f0f0f0);
+}
+
+@media (max-width: 600px) {
+  .detailHeader {
+    padding: 0.5rem 0.75rem;
+    gap: 0.5rem;
+  }
+
+  .backButton {
+    padding: 0.25rem 0.5rem;
+    font-size: 0.8125rem;
+  }
+
+  .detailTitle {
+    font-size: 1rem;
+  }
+}

src/components/Layout/ViewStack.tsx

@@ -0,0 +1,197 @@
+// Copyright (c) 2026 PowerOn AG
+// All rights reserved.
+
+import React, { type ReactElement, useEffect, useMemo, useRef } from 'react';
+import { useSearchParams } from 'react-router-dom';
+import type { ViewMode, ViewStackProps, ViewProps } from './types';
+import { useToast } from '../../contexts/ToastContext';
+import { useLanguage } from '../../providers/language/LanguageContext';
+import styles from './ViewStack.module.css';
+
+const VALID_VIEW_MODES: ViewMode[] = ['list', 'catalog', 'detail'];
+
+interface ViewResolution {
+  activeView: ViewMode;
+  sanitized: boolean;
+}
+
+function _collectChildIds(children: React.ReactNode): ViewMode[] {
+  const ids: ViewMode[] = [];
+  React.Children.forEach(children, (child) => {
+    if (!React.isValidElement<ViewProps>(child)) return;
+    ids.push(child.props.id);
+  });
+  return ids;
+}
+
+function _resolveActiveView(
+  searchParams: URLSearchParams,
+  viewParam: string,
+  entityParam: string | undefined,
+  defaultView: ViewMode,
+  registeredViews: ViewMode[],
+): ViewResolution {
+  const rawView = searchParams.get(viewParam) as ViewMode | null;
+  const entityId = entityParam ? searchParams.get(entityParam) : null;
+
+  let sanitized = false;
+
+  if (rawView && !VALID_VIEW_MODES.includes(rawView)) {
+    sanitized = true;
+  } else if (rawView && !registeredViews.includes(rawView)) {
+    sanitized = true;
+  }
+
+  let resolved: ViewMode = rawView && registeredViews.includes(rawView) ? rawView : defaultView;
+
+  if (entityId && resolved === 'list' && registeredViews.includes('detail')) {
+    resolved = 'detail';
+  }
+
+  if (resolved === 'detail') {
+    if (!registeredViews.includes('detail')) {
+      sanitized = true;
+      resolved = defaultView;
+    } else if (entityParam && !entityId) {
+      sanitized = true;
+      resolved = defaultView;
+    }
+  }
+
+  if (entityId && !registeredViews.includes('detail')) {
+    sanitized = true;
+    resolved = defaultView;
+  }
+
+  return { activeView: resolved, sanitized };
+}
+
+function _findActiveChild(
+  children: React.ReactNode,
+  activeView: ViewMode,
+): ReactElement<ViewProps> | null {
+  let match: ReactElement<ViewProps> | null = null;
+
+  React.Children.forEach(children, (child) => {
+    if (!React.isValidElement<ViewProps>(child)) return;
+    if (child.props.id === activeView) {
+      match = child;
+    }
+  });
+
+  return match;
+}
+
+function _buildBackParams(
+  searchParams: URLSearchParams,
+  viewParam: string,
+  entityParam: string | undefined,
+  defaultView: ViewMode,
+): URLSearchParams {
+  const next = new URLSearchParams(searchParams);
+
+  if (entityParam) {
+    next.delete(entityParam);
+  }
+
+  if (defaultView === 'list') {
+    next.delete(viewParam);
+  } else {
+    next.set(viewParam, 'list');
+  }
+
+  return next;
+}
+
+function _buildSanitizedParams(
+  searchParams: URLSearchParams,
+  viewParam: string,
+  entityParam: string | undefined,
+  defaultView: ViewMode,
+): URLSearchParams {
+  const next = new URLSearchParams(searchParams);
+  next.delete(viewParam);
+  if (entityParam) {
+    next.delete(entityParam);
+  }
+  if (defaultView !== 'list') {
+    next.set(viewParam, defaultView);
+  }
+  return next;
+}
+
+function View({ children }: ViewProps) {
+  return <>{children}</>;
+}
+
+function ViewStack({
+  viewParam = 'view',
+  entityParam,
+  defaultView = 'list',
+  children,
+}: ViewStackProps) {
+  const [searchParams, setSearchParams] = useSearchParams();
+  const { showWarning } = useToast();
+  const { t } = useLanguage();
+  const toastShownRef = useRef(false);
+
+  const registeredViews = useMemo(() => _collectChildIds(children), [children]);
+
+  const { activeView, sanitized } = useMemo(
+    () => _resolveActiveView(searchParams, viewParam, entityParam, defaultView, registeredViews),
+    [searchParams, viewParam, entityParam, defaultView, registeredViews],
+  );
+
+  useEffect(() => {
+    if (!sanitized || toastShownRef.current) return;
+    toastShownRef.current = true;
+    showWarning(t('Ungültige Ansicht'), t('Die angeforderte Ansicht ist nicht verfügbar.'));
+    setSearchParams(
+      _buildSanitizedParams(searchParams, viewParam, entityParam, defaultView),
+      { replace: true },
+    );
+  }, [sanitized, showWarning, t, setSearchParams, searchParams, viewParam, entityParam, defaultView]);
+
+  useEffect(() => {
+    if (!sanitized) {
+      toastShownRef.current = false;
+    }
+  }, [sanitized]);
+
+  const activeChild = _findActiveChild(children, activeView);
+
+  if (!activeChild) return null;
+
+  const { title, backLabel, actions } = activeChild.props;
+
+  const handleBack = () => {
+    const nextParams = _buildBackParams(searchParams, viewParam, entityParam, defaultView);
+    setSearchParams(nextParams, { replace: true });
+  };
+
+  return (
+    <div className={styles.viewStack}>
+      {activeView === 'detail' && (
+        <div className={styles.detailHeader}>
+          <button
+            type="button"
+            className={styles.backButton}
+            onClick={handleBack}
+          >
+            <span className={styles.backArrow}>←</span>
+            {backLabel && <span>{backLabel}</span>}
+          </button>
+          {title && <h2 className={styles.detailTitle}>{title}</h2>}
+          {actions && <div className={styles.detailActions}>{actions}</div>}
+        </div>
+      )}
+      <div className={styles.viewContent}>
+        {activeChild}
+      </div>
+    </div>
+  );
+}
+
+ViewStack.View = View;
+
+export default ViewStack;

src/components/Layout/index.ts

@@ -0,0 +1,28 @@
+// Copyright (c) 2026 PowerOn AG
+// All rights reserved.
+/**
+ * Layout component system — barrel export.
+ *
+ * Provides: StackLayout, LayoutTabs, ViewStack, Panel, persistence adapters.
+ * Replaces: Admin.module.css layout classes, UiComponents/Tabs, inline layouts.
+ */
+
+export type {
+  ScrollMode,
+  LayoutTabItem,
+  LayoutTabsProps,
+  ViewMode,
+  ViewStackProps,
+  ViewProps,
+  PanelProps,
+  StackLayoutVariant,
+  StackLayoutProps,
+  LayoutPersistenceAdapter,
+} from './types';
+
+export { _createLocalStorageAdapter } from './persistence';
+export { default as ViewStack } from './ViewStack';
+export { LayoutTabs } from './LayoutTabs';
+export { Panel } from './Panel';
+export { StackLayout } from './StackLayout';
+export { PanelLayout } from './PanelLayout';

src/components/Layout/persistence.ts

@@ -0,0 +1,39 @@
+// Copyright (c) 2026 PowerOn AG
+// All rights reserved.
+/**
+ * LayoutPersistenceAdapter — pluggable persistence for layout state.
+ *
+ * Default implementation uses localStorage.
+ * NOT used for navigation state (URL is source-of-truth) or settings values (DB).
+ * Use for: panel widths, collapse state, user UI preferences.
+ */
+
+import type { LayoutPersistenceAdapter } from './types';
+
+const PREFIX = 'po_layout_';
+
+function _buildKey(scope: string, key: string): string {
+  return `${PREFIX}${scope}:${key}`;
+}
+
+export function _createLocalStorageAdapter(scope: string): LayoutPersistenceAdapter {
+  return {
+    scope,
+    load<T>(key: string): T | null {
+      try {
+        const raw = localStorage.getItem(_buildKey(scope, key));
+        if (raw === null) return null;
+        return JSON.parse(raw) as T;
+      } catch {
+        return null;
+      }
+    },
+    save<T>(key: string, value: T): void {
+      try {
+        localStorage.setItem(_buildKey(scope, key), JSON.stringify(value));
+      } catch {
+        // localStorage full or unavailable — silently ignore for UI preferences
+      }
+    },
+  };
+}

src/components/Layout/types.ts

@@ -0,0 +1,153 @@
+// Copyright (c) 2026 PowerOn AG
+// All rights reserved.
+/**
+ * Shared types for the Layout component system.
+ */
+
+import type { CSSProperties, ReactNode } from 'react';
+
+// ---------------------------------------------------------------------------
+// ScrollMode (from useScrollMode hook)
+// ---------------------------------------------------------------------------
+
+export type ScrollMode = 'bounded' | 'document';
+
+// ---------------------------------------------------------------------------
+// LayoutTabs
+// ---------------------------------------------------------------------------
+
+export interface LayoutTabItem {
+  id: string;
+  label: string;
+  icon?: ReactNode;
+  group?: string;
+  disabled?: boolean;
+  render: () => ReactNode;
+}
+
+export interface LayoutTabsProps {
+  items: LayoutTabItem[];
+  urlParam?: string;
+  defaultTab?: string;
+  preserveSearchParams?: boolean;
+  aliasMap?: Record<string, string>;
+  syncUrl?: boolean;
+  lazy?: boolean;
+  onTabChange?: (tabId: string) => void;
+  className?: string;
+  /** Allow the tab bar to be collapsed into a single-line summary. */
+  collapsible?: boolean;
+  /** Persist collapse state under this key (localStorage). */
+  collapseKey?: string;
+  /** Start collapsed when no persisted state exists. */
+  defaultCollapsed?: boolean;
+  /**
+   * Fill the available height (default `true`): the active tab panel becomes a
+   * bounded flex column so a `table`/`editor` Panel inside it can scroll
+   * internally. Set `false` inside a `StackLayout variant="scroll"` page so the
+   * tab content keeps its natural height and the page scrolls instead of
+   * compressing the regions.
+   */
+  fill?: boolean;
+}
+
+// ---------------------------------------------------------------------------
+// ViewStack
+// ---------------------------------------------------------------------------
+
+export type ViewMode = 'list' | 'catalog' | 'detail';
+
+export interface ViewStackProps {
+  viewParam?: string;
+  entityParam?: string;
+  defaultView?: ViewMode;
+  children: ReactNode;
+}
+
+export interface ViewProps {
+  id: ViewMode;
+  title?: string | ReactNode;
+  backLabel?: string;
+  actions?: ReactNode;
+  presentation?: 'inline' | 'modal';
+  children: ReactNode;
+}
+
+// ---------------------------------------------------------------------------
+// Panel
+// ---------------------------------------------------------------------------
+
+export type PanelVariant = 'card' | 'table' | 'dashboard' | 'toolbar' | 'editor' | 'wizard';
+
+export interface PanelProps {
+  variant?: PanelVariant;
+  /** Region title (required). Rendered in the header; use t() for i18n. */
+  title: string | ReactNode;
+  /** Stable, non-i18n region id (required). Used for collapse persistence. */
+  id: string;
+  subtitle?: string | ReactNode;
+  actions?: ReactNode;
+  /** Collapse/expand toggle. Default true (opt-out for chat/editor regions). */
+  collapsible?: boolean;
+  defaultCollapsed?: boolean;
+  /** Explicit persistence key. Defaults to `{pathname}:{id}`. */
+  collapseKey?: string;
+  className?: string;
+  style?: CSSProperties;
+  /**
+   * Fill the available height of the parent flex container and let the body
+   * own its scroll. Use when a `card` (or any non-table/editor) Panel is placed
+   * in a bounded region (split pane, StackLayout body) and should grow to fill.
+   */
+  fill?: boolean;
+  children: ReactNode;
+}
+
+// ---------------------------------------------------------------------------
+// StackLayout
+// ---------------------------------------------------------------------------
+
+export type StackLayoutVariant = 'table' | 'scroll' | 'form' | 'dashboard';
+
+export interface StackLayoutProps {
+  variant?: StackLayoutVariant;
+  className?: string;
+  children: ReactNode;
+}
+
+// ---------------------------------------------------------------------------
+// Persistence
+// ---------------------------------------------------------------------------
+
+export interface LayoutPersistenceAdapter {
+  scope: string;
+  load: <T>(key: string) => T | null;
+  save: <T>(key: string, value: T) => void;
+}
+
+// ---------------------------------------------------------------------------
+// PanelLayout (split tree MVP)
+// ---------------------------------------------------------------------------
+
+export type PanelLayoutDirection = 'horizontal' | 'vertical';
+
+export interface PanelLayoutPaneConfig {
+  id: string;
+  content: ReactNode;
+  /** Default share in percent (all panes normalized to 100). */
+  defaultSize?: number;
+  minSize?: number;
+  maxSize?: number;
+  collapsible?: boolean;
+  collapseKey?: string;
+  defaultCollapsed?: boolean;
+  /** Collapsed strip size in px. Default: 40 */
+  collapsedSize?: number;
+}
+
+export interface PanelLayoutProps {
+  persistenceKey: string;
+  direction?: PanelLayoutDirection;
+  panes: PanelLayoutPaneConfig[];
+  className?: string;
+}

src/components/Navigation/MandateNavigation.tsx

@@ -39,6 +39,7 @@ import { usePrompt } from '../../hooks/usePrompt';
 import { useToast } from '../../contexts/ToastContext';
 import api from '../../api';
 import { useLanguage } from '../../providers/language/LanguageContext';
+import { useSidebar } from '../../layouts/SidebarContext';
 import styles from './MandateNavigation.module.css';
 
 type NavTranslateFn = (key: string, params?: Record<string, string | number>) => string;
@@ -210,6 +211,7 @@ const EmptyState: React.FC = () => {
 
 export const MandateNavigation: React.FC = () => {
   const { t } = useLanguage();
+  const { collapsed } = useSidebar();
   const { blocks, loading, refresh } = useNavigation();
   const { prompt, PromptDialog } = usePrompt();
   const { showWarning } = useToast();
@@ -332,6 +334,7 @@ export const MandateNavigation: React.FC = () => {
         <TreeNavigation
           items={navigationItems}
           autoExpandActive={true}
+          collapsed={collapsed}
         />
       ) : (
         <EmptyState />

src/components/Navigation/TreeNavigation/TreeNavigation.module.css

@@ -345,3 +345,82 @@
   background: var(--primary-color, #2563eb);
   color: white;
 }
+
+/* ============================================ */
+/* COLLAPSED ICON RAIL                          */
+/* ============================================ */
+
+.treeNavigationCollapsed {
+  padding: 0.25rem 0.375rem;
+  gap: 0.25rem;
+  align-items: center;
+}
+
+.collapsedNavItem {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 2.5rem;
+  height: 2.5rem;
+  border-radius: 8px;
+  color: var(--text-secondary, #64748b);
+  text-decoration: none;
+  transition: background 0.2s ease, color 0.2s ease;
+}
+
+.collapsedNavItem:hover {
+  background: var(--hover-bg, rgba(0, 0, 0, 0.04));
+  color: var(--text-primary, #1a1a1a);
+}
+
+.collapsedNavItemActive {
+  background: var(--primary-light, #e0e7ff);
+  color: var(--primary-color, #2563eb);
+}
+
+.collapsedNavIcon {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 1rem;
+}
+
+.collapsedNavLetter {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 1.75rem;
+  height: 1.75rem;
+  border-radius: 6px;
+  background: var(--surface-color, #f0f0f0);
+  font-size: 0.75rem;
+  font-weight: 600;
+}
+
+.collapsedNavItemActive .collapsedNavLetter {
+  background: var(--primary-color, #2563eb);
+  color: var(--text-on-primary, #ffffff);
+}
+
+:global(.dark-theme) .collapsedNavItem {
+  color: var(--text-secondary-dark, #aaa);
+}
+
+:global(.dark-theme) .collapsedNavItem:hover {
+  background: var(--hover-bg-dark, rgba(255, 255, 255, 0.06));
+  color: var(--text-primary-dark, #fff);
+}
+
+:global(.dark-theme) .collapsedNavItemActive {
+  background: var(--primary-dark-bg, #1e3a5f);
+  color: var(--primary-light, #93c5fd);
+}
+
+:global(.dark-theme) .collapsedNavLetter {
+  background: var(--surface-dark, #2a2a2a);
+}
+
+:global(.dark-theme) .collapsedNavItemActive .collapsedNavLetter {
+  background: var(--primary-color, #2563eb);
+  color: var(--text-on-primary, #ffffff);
+}

src/components/Navigation/TreeNavigation/TreeNavigation.tsx

@@ -76,6 +76,8 @@ export interface TreeNavigationProps {
   items: TreeItem[];
   /** Whether to auto-expand nodes when their path is active */
   autoExpandActive?: boolean;
+  /** Icon-only rail mode for collapsed sidebar */
+  collapsed?: boolean;
   /** Callback when a node is clicked */
   onNodeClick?: (node: TreeNodeItem) => void;
   /** Maximum depth to render (0 = unlimited) */
@@ -122,6 +124,34 @@ function isTreeSeparator(item: TreeItem): item is TreeSeparatorItem {
   return 'type' in item && item.type === 'separator';
 }
 
+function _collectNavLinksFromNodes(nodes: TreeNodeItem[], result: TreeNodeItem[]): void {
+  for (const node of nodes) {
+    if (node.path) {
+      result.push(node);
+    }
+    if (node.children) {
+      _collectNavLinksFromNodes(node.children, result);
+    }
+  }
+}
+
+function _collectNavLinks(items: TreeItem[]): TreeNodeItem[] {
+  const result: TreeNodeItem[] = [];
+  for (const item of items) {
+    if (isTreeSeparator(item)) {
+      continue;
+    }
+    if (isTreeSection(item)) {
+      _collectNavLinksFromNodes(item.children, result);
+      continue;
+    }
+    if (isTreeNode(item)) {
+      _collectNavLinksFromNodes([item], result);
+    }
+  }
+  return result;
+}
+
 // =============================================================================
 // TREE NODE COMPONENT
 // =============================================================================
@@ -344,6 +374,45 @@ const TreeSection: React.FC<TreeSectionProps> = ({
   );
 };
 
+// =============================================================================
+// COLLAPSED ICON RAIL
+// =============================================================================
+
+interface CollapsedNavItemProps {
+  node: TreeNodeItem;
+  currentPath: string;
+  onNodeClick?: (node: TreeNodeItem) => void;
+}
+
+const CollapsedNavItem: React.FC<CollapsedNavItemProps> = ({ node, currentPath, onNodeClick }) => {
+  const isActive = node.path
+    ? currentPath === node.path || currentPath.startsWith(`${node.path}/`)
+    : false;
+  const letterFallback = node.label.trim().charAt(0).toLocaleUpperCase() || '?';
+
+  const handleClick = () => {
+    if (onNodeClick) {
+      onNodeClick(node);
+    }
+  };
+
+  return (
+    <NavLink
+      to={node.path!}
+      className={`${styles.collapsedNavItem} ${isActive ? styles.collapsedNavItemActive : ''}`}
+      title={node.label}
+      onClick={handleClick}
+      data-id={node.dataId}
+    >
+      {node.icon ? (
+        <span className={styles.collapsedNavIcon}>{node.icon}</span>
+      ) : (
+        <span className={styles.collapsedNavLetter}>{letterFallback}</span>
+      )}
+    </NavLink>
+  );
+};
+
 // =============================================================================
 // MAIN COMPONENT
 // =============================================================================
@@ -351,6 +420,7 @@ const TreeSection: React.FC<TreeSectionProps> = ({
 export const TreeNavigation: React.FC<TreeNavigationProps> = ({
   items,
   autoExpandActive = true,
+  collapsed = false,
   onNodeClick,
   maxDepth = 0,
   className = '',
@@ -358,6 +428,22 @@ export const TreeNavigation: React.FC<TreeNavigationProps> = ({
   const location = useLocation();
   const currentPath = location.pathname;
 
+  if (collapsed) {
+    const navLinks = _collectNavLinks(items);
+    return (
+      <nav className={`${styles.treeNavigation} ${styles.treeNavigationCollapsed} ${className}`}>
+        {navLinks.map((node, index) => (
+          <CollapsedNavItem
+            key={node.id || `collapsed-${index}`}
+            node={node}
+            currentPath={currentPath}
+            onNodeClick={onNodeClick}
+          />
+        ))}
+      </nav>
+    );
+  }
+
   return (
     <nav className={`${styles.treeNavigation} ${className}`}>
       {items.map((item, index) => {

src/components/Navigation/UserSection.module.css

@@ -10,6 +10,14 @@
   padding: 0.5rem;
   padding-bottom: max(0.5rem, env(safe-area-inset-bottom));
   border-top: 1px solid var(--border-color, #e0e0e0);
+  flex-shrink: 0;
+}
+
+.userSectionCollapsed {
+  flex-direction: column;
+  justify-content: center;
+  padding: 0.5rem 0.25rem;
+  gap: 0;
 }
 
 /* Notification Bell */
@@ -36,6 +44,13 @@
   background: var(--hover-bg, rgba(0, 0, 0, 0.05));
 }
 
+.userButtonCollapsed {
+  flex: 0 0 auto;
+  justify-content: center;
+  padding: 0.375rem;
+  width: 100%;
+}
+
 .avatar {
   flex-shrink: 0;
   width: 36px;
@@ -82,23 +97,20 @@
 
 /* Menu */
 .menu {
-  position: absolute;
-  bottom: 100%;
-  left: 0.5rem;
-  right: 0.5rem;
-  margin-bottom: 0.25rem;
   padding: 0.25rem;
   background: var(--bg-primary, #ffffff);
   border: 1px solid var(--border-color, #e0e0e0);
   border-radius: 8px;
   box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
-  z-index: 100;
+  min-width: 12rem;
+}
+
+.menuCollapsed {
+  min-width: 12rem;
 }
 
 @media (max-width: 1024px) {
   .menu {
-    left: 0.25rem;
-    right: 0.25rem;
     max-height: min(60dvh, 420px);
     overflow-y: auto;
   }

src/components/Navigation/UserSection.tsx

@@ -6,17 +6,20 @@
  * Zeigt Benutzerinformationen und Logout-Button in der Sidebar.
  */
 
-import React, { useState } from 'react';
+import React, { useRef, useState } from 'react';
 import { useNavigate } from 'react-router-dom';
 import { useCurrentUser } from '../../hooks/useUsers';
 import { NotificationBell } from '../NotificationBell';
 import { _isOnboardingHidden, _showOnboarding } from '../OnboardingAssistant';
+import { FloatingPortal } from '../UiComponents/FloatingPortal';
 import styles from './UserSection.module.css';
 
 import { useLanguage } from '../../providers/language/LanguageContext';
+import { useSidebar } from '../../layouts/SidebarContext';
 
 export const UserSection: React.FC = () => {
   const { t } = useLanguage();
+  const { collapsed } = useSidebar();
 
   const { user, logout } = useCurrentUser();
   const navigate = useNavigate();
@@ -24,6 +27,7 @@ export const UserSection: React.FC = () => {
   const [showMenu, setShowMenu] = useState(false);
   const [showLegalModal, setShowLegalModal] = useState(false);
   const [onboardingHidden, setOnboardingHidden] = useState(() => _isOnboardingHidden());
+  const userButtonRef = useRef<HTMLButtonElement>(null);
   
   const handleLogout = async () => {
     setIsLoggingOut(true);
@@ -70,18 +74,23 @@ export const UserSection: React.FC = () => {
   })();
   
   return (
-    <div className={styles.userSection}>
+    <div className={`${styles.userSection} ${collapsed ? styles.userSectionCollapsed : ''}`}>
-      {/* Notification Bell */}
+      {!collapsed && (
         <NotificationBell className={styles.notificationBell} />
+      )}
 
       <button
-        className={styles.userButton}
+        ref={userButtonRef}
+        className={`${styles.userButton} ${collapsed ? styles.userButtonCollapsed : ''}`}
         onClick={() => { setShowMenu(!showMenu); setOnboardingHidden(_isOnboardingHidden()); }}
         aria-expanded={showMenu}
+        title={collapsed ? (user.fullName || user.username) : undefined}
       >
         <div className={styles.avatar}>
           {initials}
         </div>
+        {!collapsed && (
+          <>
             <div className={styles.userInfo}>
               <span className={styles.userName}>{user.fullName || user.username}</span>
               <span className={styles.userEmail}>{user.email}</span>
@@ -89,10 +98,18 @@ export const UserSection: React.FC = () => {
             <span className={styles.chevron}>
               {showMenu ? '▲' : '▼'}
             </span>
+          </>
+        )}
       </button>
       
-      {showMenu && (
+      <FloatingPortal
-        <div className={styles.menu}>
+        open={showMenu}
+        anchorRef={userButtonRef}
+        onClose={() => setShowMenu(false)}
+        placement="top"
+        align="start"
+      >
+        <div className={`${styles.menu} ${collapsed ? styles.menuCollapsed : ''}`}>
           <button 
             className={styles.menuItem}
             onClick={handleBilling}
@@ -138,7 +155,7 @@ export const UserSection: React.FC = () => {
             {isLoggingOut ? t('Abmelden...') : t('Abmelden')}
           </button>
         </div>
-      )}
+      </FloatingPortal>
       
       {/* Legal Modal */}
       {showLegalModal && (

src/components/NotificationBell/NotificationBell.module.css

@@ -52,16 +52,13 @@
 
 /* Dropdown */
 .dropdown {
-  position: fixed;
-  bottom: 80px;
-  left: 290px;
   width: 360px;
-  max-height: 480px;
+  max-width: min(360px, calc(100vw - 16px));
+  max-height: min(480px, 70vh);
   background: var(--card-bg, white);
   border-radius: 12px;
   box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
   overflow: hidden;
-  z-index: 9999;
   animation: slideIn 0.2s ease;
 }
 
@@ -367,12 +364,3 @@
   background: var(--text-muted, #999);
 }
 
-@media (max-width: 1024px) {
-  .dropdown {
-    left: 0.75rem;
-    right: 0.75rem;
-    width: auto;
-    bottom: calc(76px + env(safe-area-inset-bottom));
-    max-height: min(70dvh, 520px);
-  }
-}

src/components/NotificationBell/NotificationBell.tsx

@@ -10,16 +10,16 @@
 import React, { useState, useEffect, useRef, useCallback } from 'react';
 import { FaBell, FaCheck, FaTimes, FaEnvelope, FaCog, FaExclamationTriangle, FaCheckCircle } from 'react-icons/fa';
 import { useNotifications, UserNotification } from '../../hooks/useNotifications';
+import { FloatingPortal } from '../UiComponents/FloatingPortal';
 import styles from './NotificationBell.module.css';
 
 import { useLanguage } from '../../providers/language/LanguageContext';
 
-// Icon mapping for notification types
 const typeIcons: Record<string, React.ReactNode> = {
   invitation: <FaEnvelope />,
   system: <FaCog />,
   workflow: <FaCog />,
-  mention: <FaExclamationTriangle />
+  mention: <FaExclamationTriangle />,
 };
 
 interface NotificationBellProps {
@@ -28,6 +28,7 @@ interface NotificationBellProps {
 
 export const NotificationBell: React.FC<NotificationBellProps> = ({ className }) => {
   const { t } = useLanguage();
+  const bellButtonRef = useRef<HTMLButtonElement>(null);
 
   const formatRelativeTime = useCallback((timestamp: number): string => {
     if (!Number.isFinite(timestamp) || timestamp <= 0) {
@@ -59,46 +60,28 @@ export const NotificationBell: React.FC<NotificationBellProps> = ({ className })
     executeAction,
     dismissNotification,
     startPolling,
-    stopPolling
+    stopPolling,
   } = useNotifications();
 
   const [isOpen, setIsOpen] = useState(false);
   const [actionLoading, setActionLoading] = useState<string | null>(null);
   const [actionSuccess, setActionSuccess] = useState<string | null>(null);
-  const dropdownRef = useRef<HTMLDivElement>(null);
 
-  // Start polling on mount
   useEffect(() => {
-    startPolling(30000); // Poll every 30 seconds
+    startPolling(30000);
     return () => stopPolling();
   }, [startPolling, stopPolling]);
 
-  // Fetch notifications when dropdown opens
   useEffect(() => {
     if (isOpen) {
       fetchNotifications({ limit: 10 });
     }
   }, [isOpen, fetchNotifications]);
 
-  // Close dropdown when clicking outside
-  useEffect(() => {
-    function handleClickOutside(event: MouseEvent) {
-      if (dropdownRef.current && !dropdownRef.current.contains(event.target as Node)) {
-        setIsOpen(false);
-      }
-    }
-    
-    if (isOpen) {
-      document.addEventListener('mousedown', handleClickOutside);
-      return () => document.removeEventListener('mousedown', handleClickOutside);
-    }
-  }, [isOpen]);
-
-  // Handle action button click
   const handleAction = useCallback(async (
     notification: UserNotification,
     actionId: string,
-    event: React.MouseEvent
+    event: React.MouseEvent,
   ) => {
     event.stopPropagation();
     setActionLoading(`${notification.id}-${actionId}`);
@@ -109,11 +92,9 @@ export const NotificationBell: React.FC<NotificationBellProps> = ({ className })
 
     if (result) {
       setActionSuccess(notification.id);
-      // Reload sidebar when accepting an invitation (grants new mandate/feature access)
       if (actionId === 'accept' && notification.referenceType === 'Invitation') {
         window.dispatchEvent(new CustomEvent('features-changed'));
       }
-      // Clear success state after animation
       setTimeout(() => {
         setActionSuccess(null);
         fetchNotifications({ limit: 10 });
@@ -121,31 +102,30 @@ export const NotificationBell: React.FC<NotificationBellProps> = ({ className })
     }
   }, [executeAction, fetchNotifications]);
 
-  // Handle dismiss
   const handleDismiss = useCallback(async (
     notification: UserNotification,
-    event: React.MouseEvent
+    event: React.MouseEvent,
   ) => {
     event.stopPropagation();
     await dismissNotification(notification.id);
   }, [dismissNotification]);
 
-  // Handle notification click (mark as read)
   const handleNotificationClick = useCallback(async (notification: UserNotification) => {
     if (notification.status === 'unread') {
       await markAsRead(notification.id);
     }
   }, [markAsRead]);
 
-  // Filter out dismissed notifications
   const visibleNotifications = notifications.filter(n => n.status !== 'dismissed');
 
   return (
-    <div className={`${styles.notificationBell} ${className || ''}`} ref={dropdownRef}>
+    <div className={`${styles.notificationBell} ${className || ''}`}>
-      {/* Bell Button */}
       <button
+        ref={bellButtonRef}
+        type="button"
         className={styles.bellButton}
-        onClick={() => setIsOpen(!isOpen)}
+        onClick={() => setIsOpen(v => !v)}
+        aria-expanded={isOpen}
         aria-label={unreadCount > 0 ? t('Benachrichtigungen ({count} ungelesen)', { count: String(unreadCount) }) : t('Benachrichtigungen')}
       >
         <FaBell className={styles.bellIcon} />
@@ -156,14 +136,19 @@ export const NotificationBell: React.FC<NotificationBellProps> = ({ className })
         )}
       </button>
 
-      {/* Dropdown */}
+      <FloatingPortal
-      {isOpen && (
+        open={isOpen}
+        anchorRef={bellButtonRef}
+        onClose={() => setIsOpen(false)}
+        placement="auto"
+        align="end"
+      >
         <div className={styles.dropdown}>
-          {/* Header */}
           <div className={styles.header}>
             <h3>{t('Benachrichtigungen')}</h3>
             {visibleNotifications.some(n => n.status === 'unread') && (
               <button
+                type="button"
                 className={styles.markAllRead}
                 onClick={() => markAllAsRead()}
               >
@@ -172,7 +157,6 @@ export const NotificationBell: React.FC<NotificationBellProps> = ({ className })
             )}
           </div>
 
-          {/* Content */}
           <div className={styles.content}>
             {loading && visibleNotifications.length === 0 && (
               <div className={styles.loading}>{t('Lade')}</div>
@@ -199,7 +183,6 @@ export const NotificationBell: React.FC<NotificationBellProps> = ({ className })
                 `}
                 onClick={() => handleNotificationClick(notification)}
               >
-                {/* Success overlay */}
                 {actionSuccess === notification.id && (
                   <div className={styles.successOverlay}>
                     <FaCheckCircle />
@@ -207,23 +190,21 @@ export const NotificationBell: React.FC<NotificationBellProps> = ({ className })
                   </div>
                 )}
 
-                {/* Icon */}
                 <div className={`${styles.icon} ${styles[`icon_${notification.type}`]}`}>
                   {typeIcons[notification.type] || <FaBell />}
                 </div>
 
-                {/* Content */}
                 <div className={styles.notificationContent}>
                   <div className={styles.title}>{notification.title}</div>
                   <div className={styles.message}>{notification.message}</div>
                   <div className={styles.time}>{formatRelativeTime(notification.createdAt)}</div>
 
-                  {/* Actions */}
                   {notification.actions && notification.status !== 'actioned' && (
                     <div className={styles.actions}>
                       {notification.actions.map(action => (
                         <button
                           key={action.actionId}
+                          type="button"
                           className={`${styles.actionButton} ${styles[`action_${action.style}`]}`}
                           onClick={(e) => handleAction(notification, action.actionId, e)}
                           disabled={actionLoading === `${notification.id}-${action.actionId}`}
@@ -242,7 +223,6 @@ export const NotificationBell: React.FC<NotificationBellProps> = ({ className })
                     </div>
                   )}
 
-                  {/* Action result */}
                   {notification.actionTaken && (
                     <div className={styles.actionResult}>
                       {notification.actionResult}
@@ -250,9 +230,9 @@ export const NotificationBell: React.FC<NotificationBellProps> = ({ className })
                   )}
                 </div>
 
-                {/* Dismiss button */}
                 {notification.status !== 'actioned' && (
                   <button
+                    type="button"
                     className={styles.dismissButton}
                     onClick={(e) => handleDismiss(notification, e)}
                     aria-label={t('Schließen')}
@@ -264,7 +244,7 @@ export const NotificationBell: React.FC<NotificationBellProps> = ({ className })
             ))}
           </div>
         </div>
-      )}
+      </FloatingPortal>
     </div>
   );
 };

src/components/PeriodPicker/PeriodPicker.module.css

@@ -51,10 +51,6 @@
 /* ---------- Popover ---------- */
 
 .popover {
-  position: absolute;
-  top: calc(100% + 6px);
-  left: 0;
-  z-index: 1000;
   background: var(--bg-primary, #ffffff);
   color: var(--text-primary, #1A202C);
   border: 1px solid var(--border-color, #E2E8F0);
@@ -67,11 +63,6 @@
   display: flex;
   flex-direction: column;
 }
-.popover.alignRight {
-  left: auto;
-  right: 0;
-}
-
 .body {
   display: grid;
   grid-template-columns: 200px 240px 1fr;

src/components/PeriodPicker/PeriodPicker.tsx

@@ -14,6 +14,7 @@
 
 import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react';
 import { useLanguage } from '../../providers/language/LanguageContext';
+import { FloatingPortal } from '../UiComponents/FloatingPortal';
 import PeriodPickerPopover from './PeriodPickerPopover';
 import {
   formatIsoDateDe,
@@ -108,20 +109,7 @@ export const PeriodPicker: React.FC<PeriodPickerProps> = (props) => {
   );
 
   const [open, setOpen] = useState(false);
-  const wrapRef = useRef<HTMLDivElement>(null);
+  const triggerRef = useRef<HTMLButtonElement>(null);
-
-  // Outside click via mousedown (see file header).
-  useEffect(() => {
-    if (!open) return;
-    const _onDown = (e: MouseEvent) => {
-      const target = e.target as HTMLElement | null;
-      if (!target) return;
-      if (wrapRef.current && wrapRef.current.contains(target)) return;
-      setOpen(false);
-    };
-    window.addEventListener('mousedown', _onDown);
-    return () => window.removeEventListener('mousedown', _onDown);
-  }, [open]);
 
   const _initialDraft: PeriodValue = useMemo(() => {
     if (resolvedValue) return resolvedValue;
@@ -155,8 +143,9 @@ export const PeriodPicker: React.FC<PeriodPickerProps> = (props) => {
   if (open) triggerCls.push(styles.open);
 
   return (
-    <div ref={wrapRef} className={`${styles.wrapper}${className ? ` ${className}` : ''}`}>
+    <div className={`${styles.wrapper}${className ? ` ${className}` : ''}`}>
       <button
+        ref={triggerRef}
         type="button"
         className={triggerCls.join(' ')}
         onClick={() => setOpen((o) => !o)}
@@ -169,14 +158,19 @@ export const PeriodPicker: React.FC<PeriodPickerProps> = (props) => {
         <span className={styles.triggerChev} aria-hidden>▾</span>
       </button>
 
-      {open && (
+      <FloatingPortal
+        open={open}
+        anchorRef={triggerRef}
+        onClose={() => setOpen(false)}
+        placement="auto"
+      >
         <PeriodPickerPopover
           initialValue={_initialDraft}
           constraints={constraints}
           onApply={_handleApply}
           onCancel={_handleCancel}
         />
-      )}
+      </FloatingPortal>
     </div>
   );
 };

src/components/PeriodPicker/PeriodPickerPopover.tsx

@@ -7,7 +7,7 @@
  * actual commit to the parent via `onApply` / `onCancel`.
  */
 
-import React, { useCallback, useEffect, useLayoutEffect, useRef, useState } from 'react';
+import React, { useCallback, useEffect, useState } from 'react';
 import { useLanguage } from '../../providers/language/LanguageContext';
 import PeriodPickerCalendar from './PeriodPickerCalendar';
 import {
@@ -192,7 +192,6 @@ const PeriodPickerPopover: React.FC<PeriodPickerPopoverProps> = (props) => {
   const footerMax = clampIsoDate(undefined, constraints, 'max');
 
   // Keyboard: Esc cancels, Enter applies
-  const popRef = useRef<HTMLDivElement>(null);
   useEffect(() => {
     const _onKey = (e: KeyboardEvent) => {
       if (e.key === 'Escape') { e.preventDefault(); onCancel(); }
@@ -202,38 +201,8 @@ const PeriodPickerPopover: React.FC<PeriodPickerPopoverProps> = (props) => {
     return () => window.removeEventListener('keydown', _onKey);
   }, [draft, onApply, onCancel]);
 
-  useLayoutEffect(() => {
-    const pop = popRef.current;
-    if (!pop) return;
-    const _clamp = () => {
-      const parent = pop.parentElement;
-      if (!parent) return;
-      const pRect = parent.getBoundingClientRect();
-      const margin = 8;
-      const popW = pop.offsetWidth || 720;
-      const popH = pop.offsetHeight || 400;
-      let left = pRect.left;
-      let top = pRect.bottom + 6;
-      if (left + popW > window.innerWidth - margin) {
-        left = window.innerWidth - margin - popW;
-      }
-      if (left < margin) left = margin;
-      if (top + popH > window.innerHeight - margin) {
-        top = Math.max(margin, pRect.top - 6 - popH);
-      }
-      pop.style.position = 'fixed';
-      pop.style.left = `${left}px`;
-      pop.style.top = `${top}px`;
-      pop.style.right = 'auto';
-      pop.style.zIndex = '2001';
-    };
-    _clamp();
-    const id = requestAnimationFrame(() => _clamp());
-    return () => cancelAnimationFrame(id);
-  }, []);
-
   return (
-    <div ref={popRef} className={styles.popover}>
+    <div className={styles.popover}>
       <div className={styles.body}>
         {/* Column 1: Presets */}
         <div className={styles.colPresets}>

src/components/ProviderSelector/ProviderSelector.module.css

@@ -75,18 +75,13 @@
   font-size: 1.1rem;
 }
 
-/* Dropdown Content - opens upward */
+/* Dropdown content — positioned by FloatingPortal */
 .dropdownContent {
-  position: absolute;
-  bottom: calc(100% + 4px);
-  left: 50%;
-  transform: translateX(-50%);
-  z-index: 1000;
   padding: 8px;
   background: var(--surface-color, #ffffff);
   border: 1px solid var(--border-color, #e0e0e0);
   border-radius: 6px;
-  box-shadow: 0 -4px 24px rgba(0, 0, 0, 0.12);
+  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
   min-width: 220px;
 }
 

src/components/ProviderSelector/ProviderSelector.tsx

@@ -16,8 +16,9 @@
  * resolveProviders(selection, allowedProviders) liefert die konkrete Liste.
  */
 
-import React, { useEffect, useMemo, useState, useRef, useCallback } from 'react';
+import React, { useEffect, useMemo, useState, useRef } from 'react';
 import { useBilling } from '../../hooks/useBilling';
+import { FloatingPortal } from '../UiComponents/FloatingPortal';
 import styles from './ProviderSelector.module.css';
 
 import { useLanguage } from '../../providers/language/LanguageContext';
@@ -190,7 +191,7 @@ export const ProviderMultiSelect: React.FC<ProviderMultiSelectProps> = ({
   const resolvedLabel = label ?? t('AI-Provider');
   const [isExpanded, setIsExpanded] = useState(defaultExpanded);
   const [initialExcludeApplied, setInitialExcludeApplied] = useState(false);
-  const containerRef = useRef<HTMLDivElement>(null);
+  const triggerRef = useRef<HTMLButtonElement>(null);
   const { allowedProviders, loadAllowedProviders, loading } = useBilling();
 
   useEffect(() => {
@@ -212,19 +213,6 @@ export const ProviderMultiSelect: React.FC<ProviderMultiSelectProps> = ({
     }
   }, [allowedProviders, excludeByDefault, initialExcludeApplied, selection, onChange]);
 
-  const _handleClickOutside = useCallback((event: MouseEvent) => {
-    if (containerRef.current && !containerRef.current.contains(event.target as Node)) {
-      setIsExpanded(false);
-    }
-  }, []);
-
-  useEffect(() => {
-    if (isExpanded) {
-      document.addEventListener('mousedown', _handleClickOutside);
-      return () => document.removeEventListener('mousedown', _handleClickOutside);
-    }
-  }, [isExpanded, _handleClickOutside]);
-
   const effectiveSelection = useMemo(
     () => _resolveProviders(selection, allowedProviders),
     [selection, allowedProviders],
@@ -282,20 +270,27 @@ export const ProviderMultiSelect: React.FC<ProviderMultiSelectProps> = ({
 
   return (
     <div
-      ref={containerRef}
       className={`${styles.providerMultiSelect} ${className || ''} ${isExpanded ? styles.expanded : styles.collapsed}`}
     >
       <button
+        ref={triggerRef}
         type="button"
         className={styles.triggerButton}
         onClick={() => setIsExpanded(!isExpanded)}
         disabled={disabled}
         title={t('Provider auswählen')}
+        aria-expanded={isExpanded}
       >
         <span className={styles.buttonIcon}>{summaryIcon}</span>
       </button>
 
-      {isExpanded && (
+      <FloatingPortal
+        open={isExpanded}
+        anchorRef={triggerRef}
+        onClose={() => setIsExpanded(false)}
+        placement="top"
+        align="center"
+      >
         <div className={styles.dropdownContent}>
           {showLabel && <div className={styles.dropdownHeader}>{resolvedLabel}</div>}
 
@@ -336,7 +331,7 @@ export const ProviderMultiSelect: React.FC<ProviderMultiSelectProps> = ({
 
           <div className={styles.hint}>{summaryHint}</div>
         </div>
-      )}
+      </FloatingPortal>
     </div>
   );
 };

src/components/RagRunningBadge/RagRunningBadge.module.css

@@ -65,10 +65,6 @@
 }
 
 .dropdown {
-  position: absolute;
-  bottom: 100%;
-  right: 0;
-  margin-bottom: 8px;
   background: var(--card-bg, #fff);
   border: 1px solid var(--border-color, #e0e0e0);
   border-radius: 8px;

src/components/RagRunningBadge/RagRunningBadge.tsx

@@ -3,6 +3,7 @@
 import React, { useEffect, useState, useRef, useCallback } from 'react';
 import { useApiRequest } from '../../hooks/useApi';
 import { useLanguage } from '../../providers/language/LanguageContext';
+import { FloatingPortal } from '../UiComponents/FloatingPortal';
 import styles from './RagRunningBadge.module.css';
 
 interface _RagJob {
@@ -25,6 +26,7 @@ export const RagRunningBadge: React.FC = () => {
   const [jobs, setJobs] = useState<_RagJob[]>([]);
   const [justFinished, setJustFinished] = useState(false);
   const [expanded, setExpanded] = useState(false);
+  const badgeButtonRef = useRef<HTMLButtonElement>(null);
   const timerRef = useRef<ReturnType<typeof setInterval> | null>(null);
   const previousJobCount = useRef(0);
   const toastTimerRef = useRef<ReturnType<typeof setTimeout> | null>(null);
@@ -79,6 +81,7 @@ export const RagRunningBadge: React.FC = () => {
   return (
     <div className={styles.badgeContainer}>
       <button
+        ref={badgeButtonRef}
         className={styles.badge}
         onClick={() => setExpanded(prev => !prev)}
         title={t('RAG-Indexierung aktiv')}
@@ -89,7 +92,13 @@ export const RagRunningBadge: React.FC = () => {
         </span>
       </button>
 
-      {expanded && (
+      <FloatingPortal
+        open={expanded}
+        anchorRef={badgeButtonRef}
+        onClose={() => setExpanded(false)}
+        placement="top"
+        align="end"
+      >
         <div className={styles.dropdown}>
           <div className={styles.dropdownHeader}>
             {t('Aktive RAG-Jobs')}
@@ -103,7 +112,7 @@ export const RagRunningBadge: React.FC = () => {
             </div>
           ))}
         </div>
-      )}
+      </FloatingPortal>
     </div>
   );
 };

src/components/UiComponents/AddressAutocomplete/AddressAutocomplete.module.css

@@ -4,12 +4,7 @@
 }
 
 .suggestionsWrapper {
-  position: absolute;
+  width: 100%;
-  top: 100%;
-  left: 0;
-  right: 0;
-  margin-top: 4px;
-  z-index: 1000;
   max-height: 300px;
   overflow: hidden;
   border-radius: 12px;

src/components/UiComponents/AddressAutocomplete/AddressAutocomplete.tsx

@@ -4,6 +4,7 @@ import React, { useState, useEffect, useRef, useCallback } from 'react';
 import TextField from '../TextField/TextField';
 import { BaseTextFieldProps } from '../TextField/TextFieldTypes';
 import { autocompleteAddress, AddressSuggestion } from '../../../api/realEstateApi';
+import { FloatingPortal } from '../FloatingPortal';
 import styles from './AddressAutocomplete.module.css';
 
 import { useLanguage } from '../../../providers/language/LanguageContext';
@@ -45,7 +46,7 @@ const AddressAutocomplete: React.FC<AddressAutocompleteProps> = ({ value = '',
   const [query, setQuery] = useState(value);
   const [autocompleteError, setAutocompleteError] = useState<string | null>(null);
   
-  const containerRef = useRef<HTMLDivElement>(null);
+  const anchorRef = useRef<HTMLDivElement>(null);
   const suggestionsRef = useRef<HTMLUListElement>(null);
   const debounceTimerRef = useRef<NodeJS.Timeout | null>(null);
 
@@ -194,23 +195,6 @@ const AddressAutocomplete: React.FC<AddressAutocompleteProps> = ({ value = '',
     }
   }, [showSuggestions, suggestions, selectedIndex, handleSelectSuggestion, onKeyDown]);
 
-  // Click outside handler
-  useEffect(() => {
-    const handleClickOutside = (event: MouseEvent) => {
-      if (containerRef.current && !containerRef.current.contains(event.target as Node)) {
-        setShowSuggestions(false);
-        setSelectedIndex(-1);
-      }
-    };
-
-    if (showSuggestions) {
-      document.addEventListener('mousedown', handleClickOutside);
-      return () => {
-        document.removeEventListener('mousedown', handleClickOutside);
-      };
-    }
-  }, [showSuggestions]);
-
   // Scroll selected item into view
   useEffect(() => {
     if (selectedIndex >= 0 && suggestionsRef.current) {
@@ -254,7 +238,7 @@ const AddressAutocomplete: React.FC<AddressAutocompleteProps> = ({ value = '',
   }, []);
 
   return (
-    <div ref={containerRef} className={`${styles.autocompleteContainer} ${className}`}>
+    <div ref={anchorRef} className={`${styles.autocompleteContainer} ${className}`}>
       <TextField
         value={query}
         onChange={handleInputChange}
@@ -273,7 +257,15 @@ const AddressAutocomplete: React.FC<AddressAutocompleteProps> = ({ value = '',
         {...props}
       />
       
-      {showSuggestions && (
+      <FloatingPortal
+        open={showSuggestions}
+        anchorRef={anchorRef}
+        onClose={() => {
+          setShowSuggestions(false);
+          setSelectedIndex(-1);
+        }}
+        placement="bottom"
+      >
         <div className={styles.suggestionsWrapper}>
           <ul ref={suggestionsRef} className={styles.suggestionsList}>
             {isLoading && (
@@ -307,7 +299,7 @@ const AddressAutocomplete: React.FC<AddressAutocompleteProps> = ({ value = '',
             ))}
           </ul>
         </div>
-      )}
+      </FloatingPortal>
     </div>
   );
 };

src/components/UiComponents/DropdownSelect/DropdownSelect.module.css

@@ -161,17 +161,12 @@
 }
 
 .dropdownMenu {
-  position: absolute;
-  top: calc(100% + 4px);
-  left: 0;
-  right: 0;
   background-color: var(--color-bg);
   border: 1px solid var(--color-border, #E2E8F0);
   border-radius: 8px;
   box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
-  z-index: 1000;
+  min-width: 180px;
   overflow: hidden;
-  min-width: 100%;
 }
 
 .dropdownHeader {

src/components/UiComponents/DropdownSelect/DropdownSelect.tsx

@@ -1,8 +1,9 @@
 // Copyright (c) 2026 PowerOn AG
 // All rights reserved.
-import React, { useState, useRef, useEffect } from 'react';
+import React, { useState, useRef } from 'react';
 import { IconType } from 'react-icons';
 import { IoChevronDown, IoClose } from 'react-icons/io5';
+import { FloatingPortal } from '../FloatingPortal';
 import styles from './DropdownSelect.module.css';
 import { ButtonVariant, ButtonSize } from '../Button/ButtonTypes';
 import { useLanguage } from '../../../providers/language/LanguageContext';
@@ -61,24 +62,7 @@ function DropdownSelect<T = any>({
   const resolvedPlaceholder = placeholder ?? t('Element auswählen');
   const resolvedEmptyMessage = emptyMessage ?? t('Keine Einträge verfügbar');
   const [isOpen, setIsOpen] = useState(false);
-  const dropdownRef = useRef<HTMLDivElement>(null);
+  const triggerRef = useRef<HTMLButtonElement>(null);
-
-  // Close dropdown when clicking outside
-  useEffect(() => {
-    const handleClickOutside = (event: MouseEvent) => {
-      if (dropdownRef.current && !dropdownRef.current.contains(event.target as Node)) {
-        setIsOpen(false);
-      }
-    };
-
-    if (isOpen) {
-      document.addEventListener('mousedown', handleClickOutside);
-    }
-
-    return () => {
-      document.removeEventListener('mousedown', handleClickOutside);
-    };
-  }, [isOpen]);
 
   // Find selected item
   const selectedItem = selectedItemId !== null && selectedItemId !== undefined
@@ -174,8 +158,7 @@ function DropdownSelect<T = any>({
   };
 
   return (
-    <div ref={dropdownRef} className={styles.dropdownContainer} style={{ minWidth }}>
+    <div className={styles.dropdownContainer} style={{ minWidth }}>
-      {/* Show clear button if item is selected and showClearButton is enabled */}
       {selectedItem && showClearButton ? (
         renderClearButtonContent()
       ) : renderButton ? (
@@ -184,17 +167,25 @@ function DropdownSelect<T = any>({
         </div>
       ) : (
         <button
+          ref={triggerRef}
           type="button"
           className={buttonClasses}
           onClick={toggleDropdown}
           disabled={disabled || loading}
+          aria-expanded={isOpen}
         >
           {renderDefaultButton()}
         </button>
       )}
 
-      {isOpen && (
+      <FloatingPortal
-        <div className={styles.dropdownMenu} style={{ maxHeight }}>
+        open={isOpen}
+        anchorRef={triggerRef}
+        onClose={() => setIsOpen(false)}
+        placement="bottom"
+        align="start"
+      >
+        <div className={styles.dropdownMenu} style={{ maxHeight, minWidth }}>
           {headerText && (
             <div className={styles.dropdownHeader}>
               {headerText}
@@ -237,7 +228,7 @@ function DropdownSelect<T = any>({
             </div>
           )}
         </div>
-      )}
+      </FloatingPortal>
     </div>
   );
 }

src/components/UiComponents/FloatingPortal/FloatingPortal.module.css

@@ -0,0 +1,5 @@
+.layer {
+  position: fixed;
+  z-index: 3000;
+  box-sizing: border-box;
+}

src/components/UiComponents/FloatingPortal/FloatingPortal.tsx

@@ -0,0 +1,168 @@
+// Copyright (c) 2026 PowerOn AG
+// All rights reserved.
+/**
+ * FloatingPortal — renders floating UI on document.body with fixed positioning
+ * relative to an anchor element. Escapes ancestor overflow clipping.
+ */
+import React, { useLayoutEffect, useRef, useState } from 'react';
+import { createPortal } from 'react-dom';
+import styles from './FloatingPortal.module.css';
+
+export type FloatingPlacement = 'top' | 'bottom' | 'auto';
+
+export interface FloatingPortalProps {
+  open: boolean;
+  anchorRef: React.RefObject<HTMLElement | null>;
+  onClose?: () => void;
+  placement?: FloatingPlacement;
+  offset?: number;
+  align?: 'start' | 'center' | 'end';
+  /** Keep children mounted while closed (avoids reload lag on reopen). */
+  keepMounted?: boolean;
+  className?: string;
+  children: React.ReactNode;
+}
+
+interface FloatingCoords {
+  top: number;
+  left: number;
+  minWidth: number;
+}
+
+function _resolvePlacement(
+  preferred: FloatingPlacement,
+  anchorRect: DOMRect,
+  popRect: { width: number; height: number },
+  offset: number,
+): 'top' | 'bottom' {
+  if (preferred === 'top' || preferred === 'bottom') return preferred;
+  const spaceBelow = window.innerHeight - anchorRect.bottom - offset;
+  const spaceAbove = anchorRect.top - offset;
+  if (spaceBelow >= popRect.height) return 'bottom';
+  if (spaceAbove >= popRect.height) return 'top';
+  return spaceBelow >= spaceAbove ? 'bottom' : 'top';
+}
+
+function _computeCoords(
+  anchor: HTMLElement,
+  popEl: HTMLElement,
+  placement: FloatingPlacement,
+  offset: number,
+  align: 'start' | 'center' | 'end',
+): FloatingCoords {
+  const margin = 8;
+  const anchorRect = anchor.getBoundingClientRect();
+  const popW = popEl.offsetWidth || 220;
+  const popH = popEl.offsetHeight || 200;
+  const resolved = _resolvePlacement(placement, anchorRect, { width: popW, height: popH }, offset);
+
+  let top = resolved === 'bottom'
+    ? anchorRect.bottom + offset
+    : anchorRect.top - offset - popH;
+
+  let left = anchorRect.left;
+  if (align === 'center') {
+    left = anchorRect.left + anchorRect.width / 2 - popW / 2;
+  } else if (align === 'end') {
+    left = anchorRect.right - popW;
+  }
+
+  if (left + popW > window.innerWidth - margin) {
+    left = window.innerWidth - margin - popW;
+  }
+  if (left < margin) left = margin;
+
+  if (top + popH > window.innerHeight - margin) {
+    top = Math.max(margin, window.innerHeight - margin - popH);
+  }
+  if (top < margin) top = margin;
+
+  return {
+    top,
+    left,
+    minWidth: Math.max(anchorRect.width, 0),
+  };
+}
+
+export const FloatingPortal: React.FC<FloatingPortalProps> = ({
+  open,
+  anchorRef,
+  onClose,
+  placement = 'auto',
+  offset = 4,
+  align = 'start',
+  keepMounted = false,
+  className,
+  children,
+}) => {
+  const layerRef = useRef<HTMLDivElement>(null);
+  const [coords, setCoords] = useState<FloatingCoords | null>(null);
+
+  useLayoutEffect(() => {
+    if (!open && !keepMounted) {
+      setCoords(null);
+      return;
+    }
+    if (!open) return;
+    const anchor = anchorRef.current;
+    const layer = layerRef.current;
+    if (!anchor || !layer) return;
+
+    const _update = () => {
+      const next = _computeCoords(anchor, layer, placement, offset, align);
+      setCoords(next);
+    };
+
+    _update();
+    const rafId = requestAnimationFrame(_update);
+    window.addEventListener('resize', _update);
+    window.addEventListener('scroll', _update, true);
+    return () => {
+      cancelAnimationFrame(rafId);
+      window.removeEventListener('resize', _update);
+      window.removeEventListener('scroll', _update, true);
+    };
+  }, [open, keepMounted, anchorRef, placement, offset, align, children]);
+
+  useLayoutEffect(() => {
+    if (!open || !onClose) return;
+    const _onPointerDown = (event: MouseEvent) => {
+      const layer = layerRef.current;
+      const anchor = anchorRef.current;
+      const target = event.target as Node;
+      if (layer?.contains(target) || anchor?.contains(target)) return;
+      onClose();
+    };
+    document.addEventListener('mousedown', _onPointerDown);
+    return () => document.removeEventListener('mousedown', _onPointerDown);
+  }, [open, onClose, anchorRef]);
+
+  if (!open && !keepMounted) return null;
+
+  return createPortal(
+    <div
+      ref={layerRef}
+      className={[styles.layer, className].filter(Boolean).join(' ')}
+      style={!open ? {
+        top: -9999,
+        left: -9999,
+        visibility: 'hidden',
+        pointerEvents: 'none',
+      } : coords ? {
+        top: coords.top,
+        left: coords.left,
+        minWidth: coords.minWidth,
+        visibility: 'visible',
+      } : {
+        top: -9999,
+        left: -9999,
+        visibility: 'hidden',
+      }}
+    >
+      {children}
+    </div>,
+    document.body,
+  );
+};
+
+export default FloatingPortal;

src/components/UiComponents/FloatingPortal/index.ts

@@ -0,0 +1,4 @@
+// Copyright (c) 2026 PowerOn AG
+// All rights reserved.
+export { FloatingPortal, default } from './FloatingPortal';
+export type { FloatingPortalProps, FloatingPlacement } from './FloatingPortal';

src/components/UiComponents/Tabs/Tabs.module.css

@@ -1,50 +0,0 @@
-.tabsContainer {
-  display: flex;
-  flex-direction: column;
-  width: 100%;
-  flex: 1;
-  min-height: 0;
-  gap: 0;
-}
-
-.tabsHeader {
-  display: flex;
-  gap: 0;
-  border-bottom: 2px solid var(--color-border, #e0e0e0);
-  margin-bottom: 1rem;
-  flex-shrink: 0;
-}
-
-.tabButton {
-  padding: 0.75rem 1.5rem;
-  background: transparent;
-  border: none;
-  border-bottom: 2px solid transparent;
-  cursor: pointer;
-  font-size: 1rem;
-  font-weight: 500;
-  color: var(--color-text, #666);
-  transition: all 0.2s ease;
-  margin-bottom: -2px;
-  font-family: var(--font-family);
-}
-
-.tabButton:hover {
-  color: var(--color-text, #333);
-  background: var(--color-bg-hover, rgba(0, 0, 0, 0.02));
-}
-
-.tabButtonActive {
-  color: var(--color-secondary, #007bff);
-  border-bottom-color: var(--color-primary, #007bff);
-  font-weight: 600;
-}
-
-.tabsContent {
-  flex: 1;
-  min-height: 0;
-  width: 100%;
-  display: flex;
-  flex-direction: column;
-}
-

src/components/UiComponents/Tabs/Tabs.tsx

@@ -1,61 +0,0 @@
-// Copyright (c) 2026 PowerOn AG
-// All rights reserved.
-import React, { useState } from 'react';
-import styles from './Tabs.module.css';
-
-export interface Tab {
-  id: string;
-  label: string;
-  content: React.ReactNode;
-}
-
-export interface TabsProps {
-  tabs: Tab[];
-  defaultTabId?: string;
-  /** Controlled active tab. When provided, internal state is ignored. */
-  activeTabId?: string;
-  onTabChange?: (tabId: string) => void;
-  className?: string;
-}
-
-export function Tabs({ tabs, defaultTabId, activeTabId: controlledTabId, onTabChange, className = '' }: TabsProps) {
-  const [internalTabId, setInternalTabId] = useState<string>(
-    defaultTabId || tabs[0]?.id || ''
-  );
-
-  const activeTabId = controlledTabId ?? internalTabId;
-
-  const handleTabClick = (tabId: string) => {
-    if (!controlledTabId) setInternalTabId(tabId);
-    onTabChange?.(tabId);
-  };
-
-  const activeTab = tabs.find(tab => tab.id === activeTabId) || tabs[0];
-
-  if (!tabs || tabs.length === 0) {
-    return null;
-  }
-
-  return (
-    <div className={`${styles.tabsContainer} ${className}`}>
-      <div className={styles.tabsHeader}>
-        {tabs.map(tab => (
-          <button
-            key={tab.id}
-            className={`${styles.tabButton} ${activeTabId === tab.id ? styles.tabButtonActive : ''}`}
-            onClick={() => handleTabClick(tab.id)}
-            type="button"
-          >
-            {tab.label}
-          </button>
-        ))}
-      </div>
-      <div className={styles.tabsContent}>
-        {activeTab && activeTab.content}
-      </div>
-    </div>
-  );
-}
-
-export default Tabs;
-

src/components/UiComponents/Tabs/index.ts

@@ -1,5 +0,0 @@
-// Copyright (c) 2026 PowerOn AG
-// All rights reserved.
-export { Tabs, default } from './Tabs';
-export type { TabsProps, Tab } from './Tabs';
-

src/components/UiComponents/index.ts

@@ -19,9 +19,8 @@ export type { LogMessageProps } from './Log/LogMessage';
 export { WorkflowStatus } from './WorkflowStatus';
 export type { WorkflowStatusProps } from './WorkflowStatus/WorkflowStatusTypes';
 export * from './AutoScroll';
-export * from './Tabs';
-export type { TabsProps, Tab } from './Tabs';
 export * from './AccordionList';
 export * from './Toast';
 export * from './VoiceLanguageSelect';
 export * from './Modal';
+export * from './FloatingPortal';

src/components/UnifiedDataBar/ChatsTab.module.css

@@ -1,6 +1,10 @@
 .chatsTab {
   display: flex;
   flex-direction: column;
+  flex: 1;
+  min-height: 0;
+  height: 100%;
+  overflow: hidden;
   gap: 8px;
 }
 
@@ -98,6 +102,9 @@
 .tree {
   display: flex;
   flex-direction: column;
+  flex: 1;
+  min-height: 0;
+  overflow-y: auto;
 }
 
 .chatItem {

src/components/UnifiedDataBar/ChatsTab.tsx

@@ -28,7 +28,7 @@ type ChatFilter = 'active' | 'archived';
 
 interface ChatsTabProps {
   context: UdbContext;
-  onSelectChat?: (chatId: string, featureInstanceId: string) => void;
+  onSelectChat?: (chatId: string, featureInstanceId: string, label?: string) => void;
   onDragStart?: (chatId: string, event: React.DragEvent) => void;
   activeWorkflowId?: string;
   chatListRefreshKey?: number;
@@ -288,7 +288,7 @@ const ChatsTab: React.FC<ChatsTabProps> = ({ context,
         key={chat.id}
         className={itemClassName}
         onClick={() => {
-          if (!isEditing) onSelectChat?.(chat.id, featureInstanceId);
+          if (!isEditing) onSelectChat?.(chat.id, featureInstanceId, chat.label);
         }}
         draggable={!!onDragStart && !isEditing}
         onDragStart={(e) => {

src/components/UnifiedDataBar/FilesTab.module.css

@@ -1,6 +1,8 @@
 .filesTab {
   display: flex;
   flex-direction: column;
+  flex: 1;
+  min-height: 0;
   height: 100%;
   position: relative;
 }

src/components/UnifiedDataBar/SourcesTab.module.css

@@ -0,0 +1,22 @@
+.sourcesTab {
+  display: flex;
+  flex-direction: column;
+  flex: 1;
+  min-height: 0;
+  height: 100%;
+  overflow: hidden;
+}
+
+.treeHost {
+  flex: 1;
+  min-height: 0;
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
+}
+
+.empty {
+  padding: 12px;
+  font-size: 12px;
+  color: #888;
+}

src/components/UnifiedDataBar/SourcesTab.tsx

@@ -20,6 +20,7 @@ import { createUdbSourcesProvider } from './UdbSourcesProvider';
 import type { UdbBackendNode } from './UdbSourcesProvider';
 import { DataSourceSettingsModal } from './DataSourceSettingsModal';
 import { useLanguage } from '../../providers/language/LanguageContext';
+import styles from './SourcesTab.module.css';
 
 interface SourcesTabProps {
   context: UdbContext;
@@ -84,15 +85,15 @@ const SourcesTab: React.FC<SourcesTabProps> = ({
 
   if (!instanceId || !provider) {
     return (
-      <div style={{ padding: 12, fontSize: 12, color: '#888' }}>
+      <div className={styles.empty}>
         {t('Keine Workspace-Instanz aktiv.')}
       </div>
     );
   }
 
   return (
-    <div style={{ height: '100%', display: 'flex', flexDirection: 'column', minHeight: 0 }}>
+    <div className={styles.sourcesTab}>
-      <div style={{ flex: 1, overflow: 'auto', minHeight: 0 }}>
+      <div className={styles.treeHost}>
         <FormGeneratorTree
           provider={provider}
           ownership="own"

src/components/UnifiedDataBar/UnifiedDataBar.module.css

@@ -1,6 +1,8 @@
 .udb {
   display: flex;
   flex-direction: column;
+  flex: 1;
+  min-height: 0;
   height: 100%;
   overflow: hidden;
 }
@@ -38,7 +40,10 @@
 
 .tabContent {
   flex: 1;
-  overflow-y: auto;
+  min-height: 0;
+  overflow: hidden;
+  display: flex;
+  flex-direction: column;
   padding: 8px;
 }
 

src/components/UnifiedDataBar/UnifiedDataBar.tsx

@@ -43,7 +43,7 @@ interface UnifiedDataBarProps {
   activeTab?: UdbTab;
   onTabChange?: (tab: UdbTab) => void;
   hideTabs?: UdbTab[];
-  onSelectChat?: (chatId: string, featureInstanceId: string) => void;
+  onSelectChat?: (chatId: string, featureInstanceId: string, label?: string) => void;
   activeWorkflowId?: string;
   onRenameChat?: (chatId: string, newName: string) => void;
   chatListRefreshKey?: number;

src/components/UnifiedDataBar/index.ts

@@ -1,5 +1,6 @@
 // Copyright (c) 2026 PowerOn AG
 // All rights reserved.
 export { default as UnifiedDataBar } from './UnifiedDataBar';
+export { default as ChatsTab } from './ChatsTab';
 export type { UdbContext, UdbTab, AddToChat_FileItem, AddToChat_FeatureSource } from './UnifiedDataBar';
 export { useUdlContext } from './useUdlContext';

src/config/keepAliveRoutes.tsx

@@ -4,6 +4,8 @@ import type { KeepAliveEntry } from '../types/keepAlive.types';
 import { AdminDatabaseHealthPage } from '../pages/admin/AdminDatabaseHealthPage';
 import { AdminLanguagesPage } from '../pages/admin/AdminLanguagesPage';
 import { CommcoachSessionView } from '../pages/views/commcoach';
+import { TeamsbotSessionView } from '../pages/views/teamsbot/TeamsbotSessionView';
+import { RedmineBrowserView } from '../pages/views/redmine/RedmineBrowserView';
 import { WorkspacePage } from '../pages/views/workspace/WorkspacePage';
 import { WorkflowAutomationPage } from '../pages/workflowAutomation/WorkflowAutomationHubPage';
 
@@ -31,6 +33,19 @@ export const KEEP_ALIVE_ROUTES: KeepAliveEntry[] = [
     shellOverflowHidden: false,
     render: ({ scopeKey }) => <CommcoachSessionView key={scopeKey} />,
   },
+  {
+    id: 'teamsbot-session',
+    pathRegex: /\/mandates\/[^/]+\/teamsbot\/[^/]+\/sessions/,
+    scopeRegex: /\/mandates\/([^/]+)\/teamsbot\/([^/]+)\/sessions/,
+    shellOverflowHidden: false,
+    render: ({ scopeKey }) => <TeamsbotSessionView key={scopeKey} />,
+  },
+  {
+    id: 'redmine-browser',
+    pathRegex: /\/mandates\/[^/]+\/redmine\/[^/]+\/browser/,
+    scopeRegex: /\/mandates\/([^/]+)\/redmine\/([^/]+)\/browser/,
+    render: ({ scopeKey }) => <RedmineBrowserView key={scopeKey} />,
+  },
   {
     id: 'admin-languages',
     pathRegex: /\/admin\/languages(?:$|\/)/,

src/config/pageRegistry.tsx

@@ -136,7 +136,6 @@ export const PAGE_ICONS: Record<string, React.ReactNode> = {
   'feature.neutralization': <FaShieldAlt />,
   'feature.trustee': <FaBriefcase />,
   'feature.realestate': <FaBuilding />,
-  'feature.chatworkflow': <FaPlay />,
   'feature.teamsbot': <FaHeadset />,
 
   // Feature pages - Workspace

src/hooks/useBilling.ts

@@ -12,8 +12,6 @@ import { useApiRequest } from './useApi';
 import {
   fetchBalances,
   fetchBalanceForMandate,
-  fetchTransactions,
-  fetchTransactionsPaginated,
   fetchStatistics,
   fetchAllowedProviders,
   fetchSettingsAdmin,
@@ -34,9 +32,7 @@ import {
   type MandateUserSummary,
   type StatisticsRangeRequest,
   type BillingBucketSize,
-  type BillingTransactionsPaginationParams,
 } from '../api/billingApi';
-import type { GroupLayout } from '../api/connectionApi';
 
 // Re-export types
 export type {
@@ -52,25 +48,13 @@ export type {
   BillingBucketSize,
 };
 
-export type { TransactionType, ReferenceType, BillingTransactionsPaginationParams } from '../api/billingApi';
+export type { TransactionType, ReferenceType } from '../api/billingApi';
 
 /**
  * Hook for user billing operations
  */
 export function useBilling() {
   const [balances, setBalances] = useState<BillingBalance[]>([]);
-  const [transactions, setTransactions] = useState<BillingTransaction[]>([]);
-  const [transactionsPagination, setTransactionsPagination] = useState<{
-    currentPage: number;
-    pageSize: number;
-    totalItems: number;
-    totalPages: number;
-  } | null>(null);
-  const [transactionsGroupLayout, setTransactionsGroupLayout] = useState<GroupLayout | null>(null);
-  const [transactionsAppliedView, setTransactionsAppliedView] = useState<{
-    viewKey?: string;
-    displayName?: string;
-  } | null>(null);
   const [statistics, setStatistics] = useState<UsageReport | null>(null);
   const [allowedProviders, setAllowedProviders] = useState<string[]>([]);
   const { request, isLoading: loading, error } = useApiRequest();
@@ -98,43 +82,6 @@ export function useBilling() {
     }
   }, [request]);
 
-  // Fetch transactions
-  const loadTransactions = useCallback(async (limit: number = 50, offset: number = 0) => {
-    try {
-      const data = await fetchTransactions(request, limit, offset);
-      setTransactions(Array.isArray(data) ? data : []);
-      setTransactionsPagination(null);
-      setTransactionsGroupLayout(null);
-      setTransactionsAppliedView(null);
-      return data;
-    } catch (err) {
-      console.error('Error loading transactions:', err);
-      setTransactions([]);
-      setTransactionsPagination(null);
-      setTransactionsGroupLayout(null);
-      setTransactionsAppliedView(null);
-      return [];
-    }
-  }, [request]);
-
-  const refetchTransactions = useCallback(async (params?: BillingTransactionsPaginationParams) => {
-    try {
-      const data = await fetchTransactionsPaginated(request, params);
-      setTransactions(Array.isArray(data.items) ? data.items : []);
-      setTransactionsPagination(data.pagination ?? null);
-      setTransactionsGroupLayout(data.groupLayout ?? null);
-      setTransactionsAppliedView(data.appliedView ?? null);
-      return data;
-    } catch (err) {
-      console.error('Error loading transactions:', err);
-      setTransactions([]);
-      setTransactionsPagination(null);
-      setTransactionsGroupLayout(null);
-      setTransactionsAppliedView(null);
-      return null;
-    }
-  }, [request]);
-
   const loadStatistics = useCallback(async (range: StatisticsRangeRequest) => {
     try {
       const data = await fetchStatistics(request, range);
@@ -168,18 +115,12 @@ export function useBilling() {
 
   return {
     balances,
-    transactions,
-    transactionsPagination,
-    transactionsGroupLayout,
-    transactionsAppliedView,
     statistics,
     allowedProviders,
     loading,
     error,
     loadBalances,
     loadBalanceForMandate,
-    loadTransactions,
-    refetchTransactions,
     loadStatistics,
     loadAllowedProviders,
     refetch: loadBalances,

src/hooks/useDocumentTitle.ts

@@ -0,0 +1,37 @@
+// Copyright (c) 2026 PowerOn AG
+// All rights reserved.
+/**
+ * useDocumentTitle — sets `${appName} - ${pageTitle}` on document.title.
+ *
+ * Pass `isActive=false` (or a failing routeMatch) on Keep-Alive pages so a
+ * hidden instance does not overwrite the visible route's title.
+ */
+
+import { useEffect } from 'react';
+import { useLocation } from 'react-router-dom';
+import { getAppName } from '../../config/config';
+
+export type RouteMatchFn = (pathname: string, search: string) => boolean;
+
+export interface UseDocumentTitleOptions {
+  /** When false, the title is not updated. Default: true. */
+  isActive?: boolean;
+  /** When set, title updates only while this matcher returns true. */
+  routeMatch?: RouteMatchFn;
+}
+
+export function useDocumentTitle(
+  pageTitle: string,
+  options: UseDocumentTitleOptions = {},
+): void {
+  const location = useLocation();
+  const { isActive = true, routeMatch } = options;
+
+  const routeMatches = !routeMatch || routeMatch(location.pathname, location.search);
+  const shouldSet = isActive && routeMatches && pageTitle.trim().length > 0;
+
+  useEffect(() => {
+    if (!shouldSet) return;
+    document.title = `${getAppName()} - ${pageTitle}`;
+  }, [pageTitle, shouldSet]);
+}

src/hooks/useNavigation.ts

@@ -125,61 +125,102 @@ function isDynamicBlock(block: NavigationBlock): block is DynamicBlock {
   return block.type === 'dynamic';
 }
 
+// =============================================================================
+// SHARED CACHE (single in-flight request for all hook consumers)
+// =============================================================================
+
+type NavigationListener = () => void;
+
+let sharedBlocks: NavigationBlock[] = [];
+let sharedLoading = false;
+let sharedError: string | null = null;
+let inFlightFetch: Promise<void> | null = null;
+const listeners = new Set<NavigationListener>();
+let changeEventsBound = false;
+
+function _notifyNavigationListeners() {
+  listeners.forEach((listener) => listener());
+}
+
+function _parseNavigationError(err: unknown): string {
+  if (err instanceof Error) {
+    return err.message;
+  }
+  return (err as { response?: { data?: { detail?: string } } })?.response?.data?.detail
+    || 'Fehler beim Laden der Navigation';
+}
+
+async function _fetchNavigationShared(force = false): Promise<void> {
+  if (inFlightFetch && !force) {
+    return inFlightFetch;
+  }
+
+  sharedLoading = true;
+  sharedError = null;
+  _notifyNavigationListeners();
+
+  const fetchPromise = (async () => {
+    try {
+      const response = await api.get<NavigationResponse>('/api/navigation');
+      sharedBlocks = response.data.blocks || [];
+    } catch (err: unknown) {
+      sharedError = _parseNavigationError(err);
+      sharedBlocks = [];
+    } finally {
+      sharedLoading = false;
+      inFlightFetch = null;
+      _notifyNavigationListeners();
+    }
+  })();
+
+  inFlightFetch = fetchPromise;
+  return fetchPromise;
+}
+
+function _ensureNavigationChangeListeners() {
+  if (changeEventsBound) {
+    return;
+  }
+  changeEventsBound = true;
+
+  const onNavigationChanged = () => {
+    void _fetchNavigationShared(true);
+  };
+  window.addEventListener('features-changed', onNavigationChanged);
+  window.addEventListener('userInfoUpdated', onNavigationChanged);
+}
+
 // =============================================================================
 // HOOK
 // =============================================================================
 
 export function useNavigation(): UseNavigationReturn {
-  const [blocks, setBlocks] = useState<NavigationBlock[]>([]);
+  const [, setRevision] = useState(0);
-  const [loading, setLoading] = useState(true);
-  const [error, setError] = useState<string | null>(null);
 
-  const fetchNavigation = useCallback(async () => {
+  useEffect(() => {
-    setLoading(true);
+    _ensureNavigationChangeListeners();
-    setError(null);
 
-    try {
+    const listener = () => setRevision((revision) => revision + 1);
-      const response = await api.get<NavigationResponse>('/api/navigation');
+    listeners.add(listener);
-      setBlocks(response.data.blocks || []);
+    void _fetchNavigationShared();
-    } catch (err: unknown) {
+
-      const errorMsg = err instanceof Error 
+    return () => {
-        ? err.message 
+      listeners.delete(listener);
-        : (err as { response?: { data?: { detail?: string } } })?.response?.data?.detail 
+    };
-          || 'Fehler beim Laden der Navigation';
-      setError(errorMsg);
-      setBlocks([]);
-    } finally {
-      setLoading(false);
-    }
   }, []);
 
-  useEffect(() => {
+  const refresh = useCallback(() => _fetchNavigationShared(true), []);
-    fetchNavigation();
-  }, [fetchNavigation]);
 
-  useEffect(() => {
+  const staticBlocks = sharedBlocks.filter(isStaticBlock);
-    const onFeaturesChanged = () => {
+  const dynamicBlock = sharedBlocks.find(isDynamicBlock) || null;
-      fetchNavigation();
-    };
-    window.addEventListener('features-changed', onFeaturesChanged);
-    window.addEventListener('userInfoUpdated', onFeaturesChanged);
-    return () => {
-      window.removeEventListener('features-changed', onFeaturesChanged);
-      window.removeEventListener('userInfoUpdated', onFeaturesChanged);
-    };
-  }, [fetchNavigation]);
-
-  // Derive static and dynamic blocks
-  const staticBlocks = blocks.filter(isStaticBlock);
-  const dynamicBlock = blocks.find(isDynamicBlock) || null;
 
   return {
-    blocks,
+    blocks: sharedBlocks,
     staticBlocks,
     dynamicBlock,
-    loading,
+    loading: sharedLoading,
-    error,
+    error: sharedError,
-    refresh: fetchNavigation,
+    refresh,
   };
 }
 

src/hooks/useScrollMode.ts

@@ -0,0 +1,54 @@
+// Copyright (c) 2026 PowerOn AG
+// All rights reserved.
+/**
+ * useScrollMode Hook
+ *
+ * Determines the layout scroll mode for the current viewport:
+ * - "bounded": Desktop with sufficient height. Content areas use overflow:hidden
+ *   chains and tables scroll internally.
+ * - "document": Mobile or very short viewports. The overflow:hidden chain is
+ *   broken so the page scrolls as a document, letting the header scroll away.
+ *
+ * Sets `data-scroll-mode` on <html> so every CSS module can react via
+ * `:global(html[data-scroll-mode="document"])`.
+ */
+
+import { useState, useEffect, useCallback } from 'react';
+
+export type ScrollMode = 'bounded' | 'document';
+
+const DOCUMENT_MODE_QUERY = '(max-width: 1024px), (max-height: 500px)';
+
+function _evaluateScrollMode(): ScrollMode {
+  return window.matchMedia(DOCUMENT_MODE_QUERY).matches ? 'document' : 'bounded';
+}
+
+export function useScrollMode(): ScrollMode {
+  const [mode, setMode] = useState<ScrollMode>(_evaluateScrollMode);
+
+  const _syncAttribute = useCallback((m: ScrollMode) => {
+    document.documentElement.dataset.scrollMode = m;
+  }, []);
+
+  useEffect(() => {
+    _syncAttribute(mode);
+  }, [mode, _syncAttribute]);
+
+  useEffect(() => {
+    const mql = window.matchMedia(DOCUMENT_MODE_QUERY);
+    const _handleChange = () => {
+      const next = _evaluateScrollMode();
+      setMode(next);
+    };
+    mql.addEventListener('change', _handleChange);
+    return () => mql.removeEventListener('change', _handleChange);
+  }, []);
+
+  useEffect(() => {
+    return () => {
+      delete document.documentElement.dataset.scrollMode;
+    };
+  }, []);
+
+  return mode;
+}

src/hooks/useScrollRestoration.ts

@@ -0,0 +1,85 @@
+// Copyright (c) 2026 PowerOn AG
+// All rights reserved.
+/**
+ * useScrollRestoration — remembers scroll position per route (pathname + search).
+ * Restores on return; scrolls to top when the saved offset exceeds scroll height.
+ */
+
+import { useEffect, useLayoutEffect, useRef, type RefObject } from 'react';
+import { useLocation } from 'react-router-dom';
+import { useScrollMode } from './useScrollMode';
+
+const STORAGE_PREFIX = 'po_scroll:';
+
+function _routeKey(pathname: string, search: string): string {
+  return `${pathname}${search}`;
+}
+
+function _findScrollContainer(anchor: HTMLElement | null, scrollMode: 'bounded' | 'document'): HTMLElement {
+  if (scrollMode === 'document') {
+    const content = document.querySelector('[data-scroll-mode="document"].content') as HTMLElement | null;
+    if (content && content.scrollHeight > content.clientHeight) return content;
+    return document.documentElement;
+  }
+
+  let node: HTMLElement | null = anchor;
+  while (node) {
+    const { overflowY } = getComputedStyle(node);
+    if (overflowY === 'auto' || overflowY === 'scroll') {
+      return node;
+    }
+    node = node.parentElement;
+  }
+  return document.documentElement;
+}
+
+function _readPosition(key: string): number | null {
+  try {
+    const raw = sessionStorage.getItem(`${STORAGE_PREFIX}${key}`);
+    if (raw === null) return null;
+    const value = Number(raw);
+    return Number.isFinite(value) ? value : null;
+  } catch {
+    return null;
+  }
+}
+
+function _writePosition(key: string, top: number): void {
+  try {
+    sessionStorage.setItem(`${STORAGE_PREFIX}${key}`, String(top));
+  } catch {
+    // sessionStorage unavailable
+  }
+}
+
+export function useScrollRestoration(anchorRef: RefObject<HTMLElement | null>): void {
+  const location = useLocation();
+  const scrollMode = useScrollMode();
+  const prevKeyRef = useRef<string | null>(null);
+
+  useLayoutEffect(() => {
+    const routeKey = _routeKey(location.pathname, location.search);
+    const container = _findScrollContainer(anchorRef.current, scrollMode);
+    const saved = _readPosition(routeKey);
+
+    if (saved !== null && saved > 0) {
+      const maxScroll = Math.max(0, container.scrollHeight - container.clientHeight);
+      container.scrollTop = saved <= maxScroll ? saved : 0;
+    } else {
+      container.scrollTop = 0;
+    }
+
+    prevKeyRef.current = routeKey;
+  }, [location.pathname, location.search, scrollMode, anchorRef]);
+
+  useEffect(() => {
+    const routeKey = _routeKey(location.pathname, location.search);
+    const container = _findScrollContainer(anchorRef.current, scrollMode);
+
+    return () => {
+      if (prevKeyRef.current === routeKey) {
+        _writePosition(routeKey, container.scrollTop);
+      }
+    };
+  }, [location.pathname, location.search, scrollMode, anchorRef]);
+}

src/hooks/useVisibilityRemeasure.ts

@@ -0,0 +1,55 @@
+// Copyright (c) 2026 PowerOn AG
+// All rights reserved.
+/**
+ * useVisibilityRemeasure — re-runs a callback when a hidden element becomes visible.
+ *
+ * Keep-Alive routes use display:none; ResizeObserver reports 0×0 until shown again.
+ * FormGeneratorTable and split panels use this to re-clamp height/width.
+ */
+
+import { useEffect, useRef, type RefObject } from 'react';
+
+export function useVisibilityRemeasure(
+  elementRef: RefObject<HTMLElement | null>,
+  onRemeasure: () => void,
+): void {
+  const wasVisibleRef = useRef(false);
+  const onRemeasureRef = useRef(onRemeasure);
+  onRemeasureRef.current = onRemeasure;
+
+  useEffect(() => {
+    const el = elementRef.current;
+    if (!el) return;
+
+    const _triggerRemeasure = () => {
+      requestAnimationFrame(() => {
+        requestAnimationFrame(() => onRemeasureRef.current());
+      });
+    };
+
+    const _check = () => {
+      const visible = el.clientWidth > 0 && el.clientHeight > 0;
+      if (!wasVisibleRef.current && visible) {
+        _triggerRemeasure();
+      }
+      wasVisibleRef.current = visible;
+    };
+
+    _check();
+
+    const resizeObserver = new ResizeObserver(_check);
+    resizeObserver.observe(el);
+
+    const parent = el.parentElement;
+    let parentObserver: MutationObserver | null = null;
+    if (parent) {
+      parentObserver = new MutationObserver(_check);
+      parentObserver.observe(parent, { attributes: true, attributeFilter: ['style'] });
+    }
+
+    return () => {
+      resizeObserver.disconnect();
+      parentObserver?.disconnect();
+    };
+  }, [elementRef]);
+}

src/hooks/useWorkflows.ts

@@ -1,708 +0,0 @@
-// Copyright (c) 2026 PowerOn AG
-// All rights reserved.
-import { useState, useEffect, useCallback } from 'react';
-import { useApiRequest } from './useApi';
-import { fetchAttributes as fetchAttributesApi } from '../api/attributesApi';
-import type { AttributeDefinition, ApiRequestFunction } from '../api/attributesApi';
-import {
-  fetchWorkflows as fetchWorkflowsFromApi,
-  fetchWorkflow as fetchWorkflowFromApi,
-  deleteWorkflow as deleteWorkflowFromApi,
-  updateWorkflow as updateWorkflowFromApi,
-} from '../api/workflowAutomationApi';
-import { useWorkflowSelection } from '../contexts/WorkflowSelectionContext';
-import { usePermissions, type UserPermissions } from './usePermissions';
-
-export type StartWorkflowRequest = Record<string, unknown>;
-
-function _isValidApiBaseUrl(apiBaseUrl: string | undefined): boolean {
-  return apiBaseUrl === '/api/workflow-automation';
-}
-
-async function _deleteWorkflowsSequential(
-  request: ApiRequestFunction,
-  workflowIds: string[],
-) {
-  for (const id of workflowIds) {
-    await deleteWorkflowFromApi(request, id);
-  }
-}
-
-async function startWorkflowApi(
-  request: ApiRequestFunction,
-  _instanceId: string,
-  workflowData: StartWorkflowRequest,
-  options?: { workflowId?: string; workflowMode?: 'Dynamic' | 'Automation' },
-) {
-  const wfId = options?.workflowId ?? (workflowData as { workflowId?: string }).workflowId;
-  return await request({
-    url: `/api/workflow-automation/execute`,
-    method: 'post',
-    data: {
-      workflowId: wfId,
-      payload: workflowData,
-    },
-  });
-}
-
-async function stopWorkflowApi(request: ApiRequestFunction, instanceId: string, workflowId: string) {
-  await request({
-    url: `/api/workspace/${instanceId}/${workflowId}/stop`,
-    method: 'post',
-  });
-}
-
-async function deleteMessageApi(
-  request: ApiRequestFunction,
-  instanceId: string,
-  workflowId: string,
-  messageId: string,
-) {
-  await request({
-    url: `/api/workspace/${instanceId}/workflows/${workflowId}/messages/${messageId}`,
-    method: 'delete',
-  });
-}
-
-async function deleteFileFromMessageApi(
-  request: ApiRequestFunction,
-  instanceId: string,
-  workflowId: string,
-  messageId: string,
-  fileId: string,
-) {
-  await request({
-    url: `/api/workspace/${instanceId}/workflows/${workflowId}/messages/${messageId}/files/${fileId}`,
-    method: 'delete',
-  });
-}
-
-// Workflow interface matching backend
-export interface UserWorkflow {
-  id: string;
-  mandateId: string;
-  status: string;
-  name?: string;
-  workflowMode?: string;
-  [key: string]: any; // Allow additional properties
-}
-
-// Re-export AttributeDefinition from attributesApi
-export type { AttributeDefinition } from '../api/attributesApi';
-
-// Attribute option interface (from backend)
-export interface AttributeOption {
-  value: string | number;
-  label: string;
-}
-
-// Pagination parameters
-export interface PaginationParams {
-  page?: number;
-  pageSize?: number;
-  sort?: Array<{ field: string; direction: 'asc' | 'desc' }>;
-  filters?: Record<string, any>;
-  search?: string;
-}
-
-/** Get apiBaseUrl for workflow APIs (mandate-scoped) */
-export function getWorkflowApiBaseUrl(_instanceId: string | undefined, featureCode: string | undefined): string | undefined {
-  if (!featureCode) return undefined;
-  if (featureCode === 'workflowAutomation') return `/api/workflow-automation`;
-  return undefined;
-}
-
-// Workflows list hook - pass instanceId and featureCode when in feature context for feature-scoped API
-export function useUserWorkflows(options?: { instanceId?: string; featureCode?: string }) {
-  const apiBaseUrl = getWorkflowApiBaseUrl(options?.instanceId, options?.featureCode);
-  const [workflows, setWorkflows] = useState<UserWorkflow[]>([]);
-  const [attributes, setAttributes] = useState<AttributeDefinition[]>([]);
-  const [permissions, setPermissions] = useState<UserPermissions | null>(null);
-  const [pagination, setPagination] = useState<{
-    currentPage: number;
-    pageSize: number;
-    totalItems: number;
-    totalPages: number;
-  } | null>(null);
-  const { request, isLoading: loading, error } = useApiRequest<null, unknown>();
-  const { checkPermission } = usePermissions();
-
-  // Fetch attributes from backend
-  const fetchAttributes = useCallback(async () => {
-    try {
-      const attrs = await fetchAttributesApi(request, 'ChatWorkflow');
-      setAttributes(attrs);
-      return attrs;
-    } catch (error: any) {
-      console.error('Error fetching attributes:', error);
-      setAttributes([]);
-      return [];
-    }
-  }, [request]);
-
-  // Fetch permissions from backend
-  const fetchPermissions = useCallback(async () => {
-    try {
-      const perms = await checkPermission('DATA', 'ChatWorkflow');
-      setPermissions(perms);
-      return perms;
-    } catch (error: any) {
-      console.error('Error fetching permissions:', error);
-      const defaultPerms: UserPermissions = {
-        view: false,
-        read: 'n',
-        create: 'n',
-        update: 'n',
-        delete: 'n',
-      };
-      setPermissions(defaultPerms);
-      return defaultPerms;
-    }
-  }, [checkPermission]);
-
-  const fetchWorkflowsData = useCallback(async (params?: PaginationParams) => {
-    try {
-      if (!apiBaseUrl || !_isValidApiBaseUrl(apiBaseUrl)) {
-        console.error('useUserWorkflows: apiBaseUrl is required (missing featureCode)');
-        return;
-      }
-      let listParams: { pagination?: Record<string, unknown> } | undefined = undefined;
-      if (params) {
-        const paginationObj: Record<string, unknown> = {};
-        if (params.page !== undefined) paginationObj.page = params.page;
-        if (params.pageSize !== undefined) paginationObj.pageSize = params.pageSize;
-        if (params.sort) paginationObj.sort = params.sort;
-        if (params.filters) paginationObj.filters = params.filters;
-        if (params.search) paginationObj.search = params.search;
-        if (Object.keys(paginationObj).length > 0) {
-          listParams = { pagination: paginationObj };
-        }
-      }
-      const data: unknown = await fetchWorkflowsFromApi(request, listParams ? { pagination: listParams.pagination } : undefined);
-      
-      // Handle paginated response
-      if (data && typeof data === 'object' && data !== null && 'items' in data) {
-        const d = data as { items?: unknown; pagination?: unknown };
-        const items = Array.isArray(d.items) ? d.items : [];
-        // Map API response to our frontend model
-        const mappedWorkflows = items.map((apiWorkflow: any): UserWorkflow => {
-          return {
-            id: apiWorkflow.id,
-            mandateId: apiWorkflow.mandateId || '',
-            status: apiWorkflow.status || 'unknown',
-            name: apiWorkflow.name,
-            workflowMode: apiWorkflow.workflowMode,
-            ...apiWorkflow // Include any additional properties
-          };
-        });
-        setWorkflows(mappedWorkflows);
-        if (d.pagination && typeof d.pagination === 'object') {
-          setPagination(d.pagination as any);
-        }
-      } else {
-        // Handle non-paginated response (backward compatibility)
-        const items = Array.isArray(data) ? data : [];
-        const mappedWorkflows = items.map((apiWorkflow: any): UserWorkflow => {
-          return {
-            id: apiWorkflow.id,
-            mandateId: apiWorkflow.mandateId || '',
-            status: apiWorkflow.status || 'unknown',
-            name: apiWorkflow.name,
-            workflowMode: apiWorkflow.workflowMode,
-            ...apiWorkflow
-          };
-        });
-        setWorkflows(mappedWorkflows);
-        setPagination(null);
-      }
-    } catch (error: any) {
-      // Error is already handled by useApiRequest
-      setWorkflows([]);
-      setPagination(null);
-    }
-  }, [request, apiBaseUrl]);
-
-  // Optimistically remove a workflow from the local state
-  const removeOptimistically = (workflowId: string) => {
-    setWorkflows(prevWorkflows => prevWorkflows.filter(workflow => workflow.id !== workflowId));
-  };
-
-  // Optimistically update a workflow in the local state
-  const updateOptimistically = (workflowId: string, updateData: Partial<UserWorkflow>) => {
-    setWorkflows(prevWorkflows => 
-      prevWorkflows.map(workflow => 
-        workflow.id === workflowId 
-          ? { ...workflow, ...updateData }
-          : workflow
-      )
-    );
-  };
-
-  // Fetch a single workflow by ID
-  const fetchWorkflowById = useCallback(async (workflowId: string): Promise<UserWorkflow | null> => {
-    try {
-      if (!_isValidApiBaseUrl(apiBaseUrl)) return null;
-      const workflow = await fetchWorkflowFromApi(request, workflowId);
-      return workflow as unknown as UserWorkflow | null;
-    } catch (error: any) {
-      console.error('Error fetching workflow by ID:', error);
-      return null;
-    }
-  }, [request, apiBaseUrl]);
-
-  // Generate edit fields from attributes dynamically
-  const generateEditFieldsFromAttributes = useCallback((): Array<{
-    key: string;
-    label: string;
-    type: 'string' | 'boolean' | 'email' | 'textarea' | 'date' | 'enum' | 'multiselect' | 'readonly';
-    editable?: boolean;
-    required?: boolean;
-    validator?: (value: any) => string | null;
-    minRows?: number;
-    maxRows?: number;
-    options?: Array<{ value: string | number; label: string }>;
-    optionsReference?: string; // For options that need to be fetched (e.g., "user.role")
-  }> => {
-    if (!attributes || attributes.length === 0) {
-      return [];
-    }
-
-    const editableFields = attributes
-      .filter(attr => {
-        // Filter out non-editable fields based on readonly/editable flags
-        if (attr.readonly === true || attr.editable === false) {
-          return false; // Don't show readonly fields in edit form
-        }
-        // Also filter out common non-editable fields
-        const nonEditableFields = ['id', 'mandateId', 'sysCreatedBy', '_hideDelete'];
-        return !nonEditableFields.includes(attr.name);
-      })
-      .map(attr => {
-        // Map backend attribute type to form field type
-        let fieldType: 'string' | 'boolean' | 'email' | 'textarea' | 'date' | 'enum' | 'multiselect' | 'readonly' = 'string';
-        let options: Array<{ value: string | number; label: string }> | undefined = undefined;
-        let optionsReference: string | undefined = undefined;
-        
-        // Map backend types to form field types
-        if (attr.type === 'checkbox') {
-          fieldType = 'boolean';
-        } else if (attr.type === 'email') {
-          fieldType = 'email';
-        } else if (attr.type === 'date') {
-          fieldType = 'date';
-        } else if (attr.type === 'select') {
-          fieldType = 'enum';
-          // Handle options - can be array or string reference
-          if (Array.isArray(attr.options)) {
-            options = attr.options.map(opt => ({
-                value: opt.value,
-                label: opt.label || String(opt.value)
-              }));
-          } else if (typeof attr.options === 'string') {
-            optionsReference = attr.options;
-          }
-        } else if (attr.type === 'multiselect') {
-          fieldType = 'multiselect';
-          // Handle options - can be array or string reference
-          if (Array.isArray(attr.options)) {
-            options = attr.options.map(opt => ({
-                value: opt.value,
-                label: opt.label || String(opt.value)
-              }));
-          } else if (typeof attr.options === 'string') {
-            optionsReference = attr.options;
-          }
-        } else if (attr.type === 'textarea') {
-          fieldType = 'textarea';
-        } else if (attr.type === 'text') {
-          fieldType = (attr as any).multiline === true ? 'textarea' : 'string';
-        }
-        // Note: Legacy 'boolean' and 'enum' types are not in the AttributeDefinition type union
-        // If needed, they should be handled via type casting: (attr as any).type === 'boolean'
-
-        // Define validators and required fields
-        let required = attr.required === true;
-        let validator: ((value: any) => string | null) | undefined = undefined;
-        let minRows: number | undefined = undefined;
-        let maxRows: number | undefined = undefined;
-
-        if (attr.name === 'name') {
-          required = true;
-          validator = (value: any) => {
-            if (!value || (typeof value === 'string' && value.trim() === '')) {
-              return 'Workflow name cannot be empty';
-            }
-            if (typeof value === 'string' && value.length > 100) {
-              return 'Workflow name cannot exceed 100 characters';
-            }
-            return null;
-          };
-        } else if (fieldType === 'textarea') {
-          minRows = 4;
-          maxRows = 8;
-        }
-        // Multiselect validation
-        else if (fieldType === 'multiselect' && required) {
-          validator = (value: any[]) => {
-            if (!value || !Array.isArray(value) || value.length === 0) {
-              return `${attr.label} is required`;
-            }
-            return null;
-          };
-        }
-
-        return {
-          key: attr.name,
-          label: attr.label || attr.name,
-          type: fieldType,
-          editable: attr.editable !== false && attr.readonly !== true,
-          required,
-          validator,
-          minRows,
-          maxRows,
-          options,
-          optionsReference
-        };
-      });
-
-    return editableFields;
-  }, [attributes]);
-
-  // Ensure attributes are loaded - can be called by EditActionButton
-  const ensureAttributesLoaded = useCallback(async () => {
-    // If attributes are already loaded, return them
-    if (attributes && attributes.length > 0) {
-      return attributes;
-    }
-    
-    // Otherwise, fetch them and return the result
-    const fetchedAttributes = await fetchAttributes();
-    return fetchedAttributes;
-  }, [attributes, fetchAttributes]);
-
-  // Fetch attributes and permissions on mount
-  // Note: Do NOT fetch workflows here - let the table component control pagination
-  useEffect(() => {
-    fetchAttributes();
-    fetchPermissions();
-  }, [fetchAttributes, fetchPermissions]);
-
-  // Listen for workflow creation events to refetch workflows list
-  useEffect(() => {
-    const handleWorkflowCreated = (_event: CustomEvent<{ workflow: UserWorkflow }>) => {
-      // Refetch to ensure we have the latest data
-      fetchWorkflowsData();
-    };
-
-    window.addEventListener('workflowCreated', handleWorkflowCreated as EventListener);
-    
-    return () => {
-      window.removeEventListener('workflowCreated', handleWorkflowCreated as EventListener);
-    };
-  }, [fetchWorkflowsData]);
-
-  return { 
-    data: workflows, 
-    loading, 
-    error, 
-    refetch: fetchWorkflowsData,
-    removeOptimistically,
-    updateOptimistically,
-    attributes,
-    permissions,
-    pagination,
-    fetchWorkflowById,
-    generateEditFieldsFromAttributes,
-    ensureAttributesLoaded
-  };
-}
-
-// Workflow operations hook - pass instanceId and featureCode when in feature context for feature-scoped API
-export function useWorkflowOperations(options?: { instanceId?: string; featureCode?: string }) {
-  const instanceId = options?.instanceId;
-  const [startingWorkflow, setStartingWorkflow] = useState(false);
-  const [stoppingWorkflows, setStoppingWorkflows] = useState<Set<string>>(new Set());
-  const [deletingWorkflows, setDeletingWorkflows] = useState<Set<string>>(new Set());
-  const [editingWorkflows, setEditingWorkflows] = useState<Set<string>>(new Set());
-  const [deletingMessages, setDeletingMessages] = useState<Set<string>>(new Set());
-  const [deletingFiles, setDeletingFiles] = useState<Set<string>>(new Set());
-  
-  const [startError, setStartError] = useState<string | null>(null);
-  const [stopError, setStopError] = useState<string | null>(null);
-  const [deleteError, setDeleteError] = useState<string | null>(null);
-  const [updateError, setUpdateError] = useState<string | null>(null);
-  const [deleteMessageError, setDeleteMessageError] = useState<string | null>(null);
-  const [deleteFileError, setDeleteFileError] = useState<string | null>(null);
-  
-  // Workflow selection context - to clear selection if deleted workflow is selected
-  const { selectedWorkflowId, clearWorkflow } = useWorkflowSelection();
-  
-  const { request } = useApiRequest();
-  
-  // Generic delete operation handler
-  const handleDeleteOperation = async <T>(
-    operationKey: string,
-    setLoadingSet: React.Dispatch<React.SetStateAction<Set<string>>>,
-    setErrorState: React.Dispatch<React.SetStateAction<string | null>>,
-    operation: () => Promise<T>,
-    errorMessages: { default: string; notFound: string; forbidden: string }
-  ): Promise<{ success: boolean; error?: string }> => {
-    setErrorState(null);
-    setLoadingSet(prev => new Set(prev).add(operationKey));
-    
-    try {
-      await operation();
-      return { success: true };
-    } catch (error: any) {
-      let errorMessage = error.message || errorMessages.default;
-      
-      if (error.response?.status === 404) {
-        errorMessage = errorMessages.notFound;
-        return { success: true };
-      } else if (error.response?.status === 403) {
-        errorMessage = errorMessages.forbidden;
-      }
-      
-      setErrorState(errorMessage);
-      return { success: false, error: errorMessage };
-    } finally {
-      setLoadingSet(prev => {
-        const newSet = new Set(prev);
-        newSet.delete(operationKey);
-        return newSet;
-      });
-    }
-  };
-
-  const startWorkflow = async (
-    instanceId: string,
-    workflowData: StartWorkflowRequest, 
-    options?: { workflowId?: string; workflowMode?: 'Dynamic' | 'Automation' }
-  ) => {
-    setStartError(null);
-    setStartingWorkflow(true);
-    
-    try {
-      const response = await startWorkflowApi(request, instanceId, workflowData, options);
-      return { success: true, data: response };
-    } catch (error: any) {
-      const errorMessage = error.message || 'Failed to start workflow';
-      setStartError(errorMessage);
-      return { success: false, error: errorMessage };
-    } finally {
-      setStartingWorkflow(false);
-    }
-  };
-
-  const stopWorkflow = async (instanceId: string, workflowId: string) => {
-    setStopError(null);
-    setStoppingWorkflows(prev => new Set(prev).add(workflowId));
-    
-    try {
-      await stopWorkflowApi(request, instanceId, workflowId);
-      return { success: true };
-    } catch (error: any) {
-      const errorMessage = error.message || 'Failed to stop workflow';
-      setStopError(errorMessage);
-      return { success: false, error: errorMessage };
-    } finally {
-      setStoppingWorkflows(prev => {
-        const newSet = new Set(prev);
-        newSet.delete(workflowId);
-        return newSet;
-      });
-    }
-  };
-
-  const handleWorkflowDelete = async (workflowId: string) => {
-    const result = await handleDeleteOperation(
-      workflowId,
-      setDeletingWorkflows,
-      setDeleteError,
-      () => {
-        return deleteWorkflowFromApi(request, workflowId);
-      },
-      {
-        default: 'Failed to delete workflow',
-        notFound: 'Workflow not found or has already been deleted.',
-        forbidden: 'No permission to delete this workflow.'
-      }
-    );
-
-    if (result.success) {
-      // Add a small delay to ensure backend has time to process
-      await new Promise(resolve => setTimeout(resolve, 300));
-      
-      // Dispatch event to notify other components (e.g., dashboard dropdown)
-      window.dispatchEvent(new CustomEvent('workflowDeleted', { 
-        detail: { workflowIds: [workflowId] } 
-      }));
-      
-      // Clear workflow selection if the deleted workflow was selected
-      if (selectedWorkflowId === workflowId) {
-        clearWorkflow();
-      }
-    }
-    
-    return result.success;
-  };
-
-  const handleWorkflowDeleteMultiple = async (workflowIds: string[]) => {
-    setDeleteError(null);
-    setDeletingWorkflows(prev => {
-      const newSet = new Set(prev);
-      workflowIds.forEach(id => newSet.add(id));
-      return newSet;
-    });
-    
-    try {
-      await _deleteWorkflowsSequential(request, workflowIds);
-
-      // Add a small delay to ensure backend has time to process
-      await new Promise(resolve => setTimeout(resolve, 300));
-      
-      // Dispatch event to notify other components (e.g., dashboard dropdown)
-      window.dispatchEvent(new CustomEvent('workflowDeleted', { 
-        detail: { workflowIds } 
-      }));
-      
-      // Clear workflow selection if the selected workflow was deleted
-      if (selectedWorkflowId && workflowIds.includes(selectedWorkflowId)) {
-        clearWorkflow();
-      }
-      
-      return true;
-    } catch (error: any) {
-      console.error(`❌ Bulk delete failed:`, error);
-      setDeleteError(error.message || 'Bulk delete failed');
-      return false;
-    } finally {
-      setDeletingWorkflows(prev => {
-        const newSet = new Set(prev);
-        workflowIds.forEach(id => newSet.delete(id));
-        return newSet;
-      });
-    }
-  };
-
-  const deleteMessage = async (workflowId: string, messageId: string) => {
-    const operationKey = `${workflowId}:${messageId}`;
-    return handleDeleteOperation(
-      operationKey,
-      setDeletingMessages,
-      setDeleteMessageError,
-      () => {
-        if (!instanceId) throw new Error('instanceId required');
-        return deleteMessageApi(request, instanceId, workflowId, messageId);
-      },
-      {
-        default: 'Failed to delete message',
-        notFound: 'Message not found or has already been deleted.',
-        forbidden: 'No permission to delete this message.'
-      }
-    );
-  };
-
-  const deleteFileFromMessage = async (
-    workflowId: string, 
-    messageId: string, 
-    fileId: string
-  ) => {
-    const operationKey = `${workflowId}:${messageId}:${fileId}`;
-    return handleDeleteOperation(
-      operationKey,
-      setDeletingFiles,
-      setDeleteFileError,
-      () => {
-        if (!instanceId) throw new Error('instanceId required');
-        return deleteFileFromMessageApi(request, instanceId, workflowId, messageId, fileId);
-      },
-      {
-        default: 'Failed to delete file',
-        notFound: 'File not found or has already been deleted.',
-        forbidden: 'No permission to delete this file.'
-      }
-    );
-  };
-
-  const handleWorkflowUpdate = async (workflowId: string, updateData: Partial<{ name: string; description?: string; tags?: string[] }>, _originalWorkflowData?: any) => {
-    setUpdateError(null);
-    setEditingWorkflows(prev => new Set(prev).add(workflowId));
-    
-    try {
-      const updatedWorkflow = await updateWorkflowFromApi(request, workflowId, {
-        label: updateData.name,
-      });
-      
-      return { success: true, workflowData: updatedWorkflow };
-    } catch (error: any) {
-      console.error(`Update failed for workflow ID ${workflowId}:`, error);
-      
-      const errorMessage = error.response?.data?.message || error.message || 'Failed to update workflow';
-      const statusCode = error.response?.status;
-      
-      setUpdateError(errorMessage);
-      
-      // Return detailed error information for proper handling
-      return { 
-        success: false, 
-        error: errorMessage,
-        statusCode,
-        isPermissionError: statusCode === 403,
-        isValidationError: statusCode === 400
-      };
-    } finally {
-      setEditingWorkflows(prev => {
-        const newSet = new Set(prev);
-        newSet.delete(workflowId);
-        return newSet;
-      });
-    }
-  };
-
-  // Generic inline update handler for FormGeneratorTable
-  // Must merge changes with existing row data because backend requires full object
-  const handleInlineUpdate = async (workflowId: string, changes: Partial<UserWorkflow>, existingRow?: any) => {
-    if (!existingRow) {
-      throw new Error(`Existing row data required for inline update`);
-    }
-    
-    // Merge changes with existing row data
-    const mergedData = {
-      name: existingRow.name,
-      ...changes
-    };
-    
-    const result = await handleWorkflowUpdate(workflowId, mergedData);
-    if (!result.success) {
-      throw new Error(result.error || 'Failed to update');
-    }
-    return result;
-  };
-
-  return {
-    // Loading states
-    startingWorkflow,
-    stoppingWorkflows,
-    deletingWorkflows,
-    editingWorkflows,
-    deletingMessages,
-    deletingFiles,
-    // Error states
-    startError,
-    stopError,
-    deleteError,
-    updateError,
-    deleteMessageError,
-    deleteFileError,
-    // Operations
-    startWorkflow,
-    stopWorkflow,
-    handleWorkflowDelete,
-    handleWorkflowDeleteMultiple,
-    handleWorkflowUpdate,
-    handleInlineUpdate,
-    deleteMessage,
-    deleteFileFromMessage
-  };
-}

src/layouts/FeatureLayout.module.css

@@ -135,13 +135,10 @@
   letter-spacing: 0.025em;
 }
 
-/* Feature Content */
+/* Feature Content — viewContent owns padding, not featureContent */
 .featureContent {
   flex: 1;
-  /* Let child components handle their own scrolling for sticky headers */
   overflow: hidden;
-  padding: 1.5rem;
-  /* Maintain flex chain for child components */
   display: flex;
   flex-direction: column;
   min-height: 0;
@@ -180,10 +177,35 @@
 
 @media (max-width: 1024px) {
   .featureHeader {
-    padding: 0.75rem 1rem;
+    padding: 0.5rem 1rem;
   }
 
-  .featureContent {
+  .breadcrumb {
-    padding: 1rem;
+    gap: 0.25rem;
+    font-size: 0.8125rem;
+  }
+
+  .mandateName {
+    display: none;
+  }
+
+  .mandateName + .separator {
+    display: none;
+  }
+
+  .roleBadge {
+    padding: 0.125rem 0.5rem;
+    font-size: 0.6875rem;
   }
 }
+
+/* scrollMode: document — layout grows with content, header scrolls away */
+:global(html[data-scroll-mode="document"]) .featureLayout {
+  height: auto;
+  min-height: 0;
+}
+
+:global(html[data-scroll-mode="document"]) .featureContent {
+  overflow: visible;
+  flex: 0 0 auto;
+}

src/layouts/FeatureLayout.tsx

@@ -91,12 +91,10 @@ export const FeatureLayout: React.FC = () => {
     };
   }, [dynamicBlock, mandateId, featureCode, instanceId]);
   
-  // Warten bis Features geladen sind
   if (!initialized || loading || isLoading) {
     return <LoadingScreen />;
   }
   
-  // Prüfen ob Instanz existiert und gültig ist
   if (!isValid) {
     console.warn('FeatureLayout: Invalid instance context', {
       path: location.pathname,
@@ -112,10 +110,8 @@ export const FeatureLayout: React.FC = () => {
     );
   }
   
-  // Alles OK - rendere Content
   return (
     <div className={styles.featureLayout}>
-      {/* Header mit Instanz-Info */}
       <header className={styles.featureHeader}>
         <div className={styles.breadcrumb}>
           <span className={styles.mandateName}>
@@ -131,7 +127,6 @@ export const FeatureLayout: React.FC = () => {
         </div>
       </header>
       
-      {/* Content Area */}
       <main className={styles.featureContent}>
         <Outlet />
       </main>
@@ -148,10 +143,6 @@ interface ProtectedFeatureRouteProps {
   children: React.ReactNode;
 }
 
-/**
- * Wrapper für geschützte Feature-Routes
- * Prüft zusätzlich View-Berechtigungen
- */
 export const ProtectedFeatureRoute: React.FC<ProtectedFeatureRouteProps> = ({
   requiredView,
   children,
@@ -163,7 +154,6 @@ export const ProtectedFeatureRoute: React.FC<ProtectedFeatureRouteProps> = ({
     return <Navigate to="/" replace />;
   }
   
-  // Prüfe View-Berechtigung wenn erforderlich
   if (requiredView) {
     const hasViewAccess = instance?.permissions?.views?.[requiredView] ?? false;
     

src/layouts/MainLayout.module.css

@@ -22,6 +22,8 @@
 .sidebar {
   display: flex;
   flex-direction: column;
+  position: relative;
+  flex-shrink: 0;
   width: 280px;
   min-width: 280px;
   height: 100%;
@@ -31,13 +33,25 @@
   z-index: 1200;
 }
 
+.sidebarCollapsed {
+  overflow: visible;
+}
+
 /* Logo */
 .logoContainer {
   display: flex;
   align-items: center;
   justify-content: center;
+  gap: 0.5rem;
   padding: 1.25rem 1rem;
   border-bottom: 1px solid var(--border-color, #e0e0e0);
+  flex-shrink: 0;
+}
+
+.sidebarCollapsed .logoContainer {
+  flex-direction: column;
+  padding: 0.75rem 0.5rem;
+  gap: 0.375rem;
 }
 
 .logoImage {
@@ -46,6 +60,55 @@
   object-fit: contain;
 }
 
+.logoIcon {
+  height: 28px;
+  width: 28px;
+  object-fit: contain;
+}
+
+.collapseToggle {
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  width: 1.75rem;
+  height: 1.75rem;
+  padding: 0;
+  border: 1px solid var(--border-color, #e0e0e0);
+  border-radius: 6px;
+  background: var(--bg-primary, #ffffff);
+  color: var(--text-secondary, #666);
+  cursor: pointer;
+  flex-shrink: 0;
+  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
+}
+
+.collapseToggle:hover {
+  background: var(--hover-bg, rgba(0, 0, 0, 0.04));
+  color: var(--text-primary, #1a1a1a);
+}
+
+.sidebarCollapsed .collapseToggle {
+  width: 2rem;
+  height: 2rem;
+}
+
+.resizeHandle {
+  position: absolute;
+  top: 0;
+  right: 0;
+  width: 4px;
+  height: 100%;
+  cursor: col-resize;
+  z-index: 2;
+  transition: background 0.15s ease;
+}
+
+.resizeHandle:hover,
+.resizeHandle:active {
+  background: var(--primary-color, #2563eb);
+  opacity: 0.35;
+}
+
 .logoText {
   font-size: 1.5rem;
   font-weight: 700;
@@ -94,6 +157,7 @@
   min-height: 0;
   position: relative;
   --mobile-topbar-height: 0px;
+  --content-inset: 16px;
   display: flex;
   flex-direction: column;
   /* Let child components handle their own scrolling for sticky headers */
@@ -113,6 +177,18 @@
   overflow-x: auto;
   overflow-y: auto;
   -webkit-overflow-scrolling: touch;
+  padding-left: var(--content-inset, 16px);
+  padding-right: var(--content-inset, 16px);
+}
+
+/* scrollMode: document — .content becomes the scroll container, outletShell is transparent */
+.content[data-scroll-mode="document"] {
+  overflow: auto;
+}
+
+.content[data-scroll-mode="document"] .outletShell {
+  overflow: visible;
+  flex: 0 0 auto;
 }
 
 .mobileTopBar {
@@ -159,6 +235,17 @@
   filter: brightness(0) invert(1);
 }
 
+:global(.dark-theme) .collapseToggle {
+  border-color: var(--border-dark, #333);
+  background: var(--surface-dark, #1a1a1a);
+  color: var(--text-secondary-dark, #aaa);
+}
+
+:global(.dark-theme) .collapseToggle:hover {
+  background: var(--hover-bg-dark, rgba(255, 255, 255, 0.06));
+  color: var(--text-primary-dark, #ffffff);
+}
+
 :global(.dark-theme) .logoPower {
   color: var(--text-primary-dark, #ffffff);
 }
@@ -214,13 +301,20 @@
     top: 0;
     left: 0;
     bottom: 0;
+    width: 280px;
+    min-width: 280px;
     height: 100dvh;
     transform: translateX(-100%);
-    transition: transform 0.2s ease-in-out;
+    transition: transform 0.25s ease;
     box-shadow: 0 18px 32px rgba(0, 0, 0, 0.2);
     border-right: 1px solid var(--border-color, #e0e0e0);
   }
 
+  .collapseToggle,
+  .resizeHandle {
+    display: none;
+  }
+
   @supports not (height: 100dvh) {
     .sidebar {
       height: 100vh;
@@ -249,6 +343,7 @@
 
   .content {
     --mobile-topbar-height: 57px;
+    --content-inset: 8px;
   }
 
   .mobileBackdrop {

src/layouts/MainLayout.tsx

@@ -7,8 +7,9 @@
  * Enthält den FeatureProvider für das Multi-Tenant-System.
  */
 
-import React, { useEffect, useRef, useState } from 'react';
+import React, { useCallback, useEffect, useMemo, useRef, useState } from 'react';
 import { Outlet, useLocation } from 'react-router-dom';
+import { FaChevronLeft, FaChevronRight } from 'react-icons/fa';
 import { FeatureProvider, useFeatureStore } from '../stores/featureStore';
 import { MandateNavigation } from '../components/Navigation/MandateNavigation';
 import { UserSection } from '../components/Navigation/UserSection';
@@ -16,17 +17,51 @@ import { RagRunningBadge } from '../components/RagRunningBadge/RagRunningBadge';
 import { KEEP_ALIVE_ROUTES, hideFeatureOutlet } from '../config/keepAliveRoutes';
 import type { KeepAliveEntry, KeepAliveScopedEntry, KeepAliveUnscopedEntry } from '../types/keepAlive.types';
 import { isKeepAliveScoped } from '../types/keepAlive.types';
+import { useScrollMode } from '../hooks/useScrollMode';
+import { SidebarContext } from './SidebarContext';
 import styles from './MainLayout.module.css';
 
 import { useLanguage } from '../providers/language/LanguageContext';
 
+const SIDEBAR_WIDTH_KEY = 'sidebar-width';
+const SIDEBAR_COLLAPSED_KEY = 'sidebar-collapsed';
+const SIDEBAR_WIDTH_DEFAULT = 280;
+const SIDEBAR_WIDTH_MIN = 180;
+const SIDEBAR_WIDTH_MAX = 400;
+const SIDEBAR_COLLAPSED_WIDTH = 60;
+const DESKTOP_BREAKPOINT = 1024;
+
+function _readSidebarWidth(): number {
+  try {
+    const value = parseInt(localStorage.getItem(SIDEBAR_WIDTH_KEY) ?? '', 10);
+    if (value >= SIDEBAR_WIDTH_MIN && value <= SIDEBAR_WIDTH_MAX) {
+      return value;
+    }
+  } catch {
+    /* ignore */
+  }
+  return SIDEBAR_WIDTH_DEFAULT;
+}
+
+function _readSidebarCollapsed(): boolean {
+  try {
+    return localStorage.getItem(SIDEBAR_COLLAPSED_KEY) === '1';
+  } catch {
+    return false;
+  }
+}
+
+function _isDesktopViewport(): boolean {
+  return window.innerWidth > DESKTOP_BREAKPOINT;
+}
+
 const keepAliveShellStyle = (isVisible: boolean, shellOverflowHidden: boolean): React.CSSProperties => ({
   display: isVisible ? 'flex' : 'none',
   flexDirection: 'column',
   position: 'absolute',
   top: 'var(--mobile-topbar-height, 0px)',
-  left: 0,
+  left: 'var(--content-inset, 16px)',
-  right: 0,
+  right: 'var(--content-inset, 16px)',
   bottom: 0,
   ...(shellOverflowHidden ? { overflow: 'hidden' as const } : {}),
 });
@@ -105,12 +140,47 @@ const RoutedKeepAliveSlot: React.FC<{ entry: KeepAliveEntry; pathname: string; s
 
 const MainLayoutInner: React.FC = () => {
   const { t } = useLanguage();
+  const scrollMode = useScrollMode();
 
   const { loadFeatures, initialized, loading, error } = useFeatureStore();
   const location = useLocation();
   const [isMobileSidebarOpen, setIsMobileSidebarOpen] = useState(false);
+  const [isDesktop, setIsDesktop] = useState(_isDesktopViewport);
+  const [sidebarCollapsed, setSidebarCollapsed] = useState(_readSidebarCollapsed);
+  const [sidebarWidth, setSidebarWidth] = useState(_readSidebarWidth);
+  const resizingRef = useRef<{ startX: number; startW: number } | null>(null);
+  const sidebarRef = useRef<HTMLElement>(null);
+  const animFrameRef = useRef<number>(0);
   const hideOutletShell = hideFeatureOutlet(location.pathname, location.search);
 
+  const effectiveCollapsed = isDesktop && sidebarCollapsed;
+  const effectiveSidebarWidth = effectiveCollapsed ? SIDEBAR_COLLAPSED_WIDTH : sidebarWidth;
+
+  const toggleSidebarCollapsed = useCallback(() => {
+    setSidebarCollapsed((prev) => {
+      const next = !prev;
+      try {
+        localStorage.setItem(SIDEBAR_COLLAPSED_KEY, next ? '1' : '0');
+      } catch {
+        /* ignore */
+      }
+      return next;
+    });
+  }, []);
+
+  const sidebarContextValue = useMemo(
+    () => ({ collapsed: effectiveCollapsed }),
+    [effectiveCollapsed],
+  );
+
+  const sidebarStyle = useMemo(
+    () => ({
+      width: `${effectiveSidebarWidth}px`,
+      minWidth: `${effectiveSidebarWidth}px`,
+    }),
+    [effectiveSidebarWidth],
+  );
+
   // Features laden beim Mount
   useEffect(() => {
     if (!initialized && !loading) {
@@ -124,7 +194,9 @@ const MainLayoutInner: React.FC = () => {
 
   useEffect(() => {
     const handleResize = () => {
-      if (window.innerWidth > 1024) {
+      const desktop = _isDesktopViewport();
+      setIsDesktop(desktop);
+      if (desktop) {
         setIsMobileSidebarOpen(false);
       }
     };
@@ -133,7 +205,82 @@ const MainLayoutInner: React.FC = () => {
     return () => window.removeEventListener('resize', handleResize);
   }, []);
 
+  useEffect(() => {
+    const handleKeyDown = (event: KeyboardEvent) => {
+      if (!isDesktop) {
+        return;
+      }
+      if (event.ctrlKey && event.key.toLowerCase() === 'b') {
+        event.preventDefault();
+        toggleSidebarCollapsed();
+      }
+    };
+
+    window.addEventListener('keydown', handleKeyDown);
+    return () => window.removeEventListener('keydown', handleKeyDown);
+  }, [isDesktop, toggleSidebarCollapsed]);
+
+  useEffect(() => {
+    const handleMouseMove = (event: MouseEvent) => {
+      if (!resizingRef.current) {
+        return;
+      }
+      const { startX, startW } = resizingRef.current;
+      const nextWidth = Math.max(
+        SIDEBAR_WIDTH_MIN,
+        Math.min(SIDEBAR_WIDTH_MAX, startW + (event.clientX - startX)),
+      );
+      cancelAnimationFrame(animFrameRef.current);
+      animFrameRef.current = requestAnimationFrame(() => {
+        const el = sidebarRef.current;
+        if (el) {
+          el.style.width = `${nextWidth}px`;
+          el.style.minWidth = `${nextWidth}px`;
+        }
+      });
+    };
+
+    const handleMouseUp = (event: MouseEvent) => {
+      if (!resizingRef.current) {
+        return;
+      }
+      cancelAnimationFrame(animFrameRef.current);
+      const { startX, startW } = resizingRef.current;
+      const finalWidth = Math.max(
+        SIDEBAR_WIDTH_MIN,
+        Math.min(SIDEBAR_WIDTH_MAX, startW + (event.clientX - startX)),
+      );
+      resizingRef.current = null;
+      document.body.style.cursor = '';
+      document.body.style.userSelect = '';
+      setSidebarWidth(finalWidth);
+      try {
+        localStorage.setItem(SIDEBAR_WIDTH_KEY, String(finalWidth));
+      } catch {
+        /* ignore */
+      }
+    };
+
+    document.addEventListener('mousemove', handleMouseMove);
+    document.addEventListener('mouseup', handleMouseUp);
+    return () => {
+      document.removeEventListener('mousemove', handleMouseMove);
+      document.removeEventListener('mouseup', handleMouseUp);
+    };
+  }, []);
+
+  const handleResizeStart = useCallback((event: React.MouseEvent) => {
+    if (!isDesktop || effectiveCollapsed) {
+      return;
+    }
+    event.preventDefault();
+    resizingRef.current = { startX: event.clientX, startW: sidebarWidth };
+    document.body.style.cursor = 'col-resize';
+    document.body.style.userSelect = 'none';
+  }, [effectiveCollapsed, isDesktop, sidebarWidth]);
+
   return (
+    <SidebarContext.Provider value={sidebarContextValue}>
       <div className={styles.mainLayout}>
         {isMobileSidebarOpen && (
           <button
@@ -144,9 +291,28 @@ const MainLayoutInner: React.FC = () => {
         )}
 
         {/* Sidebar */}
-      <aside className={`${styles.sidebar} ${isMobileSidebarOpen ? styles.sidebarOpen : ''}`}>
+        <aside
+          ref={sidebarRef}
+          className={`${styles.sidebar} ${isMobileSidebarOpen ? styles.sidebarOpen : ''} ${effectiveCollapsed ? styles.sidebarCollapsed : ''}`}
+          style={isDesktop ? sidebarStyle : undefined}
+        >
           <div className={styles.logoContainer}>
-          <img src="/logos/poweron-logo.png" alt="PowerOn" className={styles.logoImage} />
+            <img
+              src={effectiveCollapsed ? '/favicon.png' : '/logos/poweron-logo.png'}
+              alt="PowerOn"
+              className={effectiveCollapsed ? styles.logoIcon : styles.logoImage}
+            />
+            {isDesktop && (
+              <button
+                type="button"
+                className={styles.collapseToggle}
+                onClick={toggleSidebarCollapsed}
+                aria-label={effectiveCollapsed ? t('Sidebar erweitern') : t('Sidebar einklappen')}
+                title={effectiveCollapsed ? t('Sidebar erweitern (Strg+B)') : t('Sidebar einklappen (Strg+B)')}
+              >
+                {effectiveCollapsed ? <FaChevronRight size={12} /> : <FaChevronLeft size={12} />}
+              </button>
+            )}
           </div>
 
           <nav className={styles.navigation}>
@@ -163,10 +329,20 @@ const MainLayoutInner: React.FC = () => {
 
           {/* User-Bereich am unteren Rand */}
           <UserSection />
+
+          {isDesktop && !effectiveCollapsed && (
+            <div
+              className={styles.resizeHandle}
+              onMouseDown={handleResizeStart}
+              role="separator"
+              aria-orientation="vertical"
+              aria-label={t('Sidebar-Breite anpassen')}
+            />
+          )}
         </aside>
 
         {/* Content */}
-      <main className={styles.content}>
+        <main className={styles.content} data-scroll-mode={scrollMode}>
           <div className={styles.mobileTopBar}>
             <button
               className={styles.mobileMenuButton}
@@ -192,6 +368,7 @@ const MainLayoutInner: React.FC = () => {
 
         <RagRunningBadge />
       </div>
+    </SidebarContext.Provider>
   );
 };
 

src/layouts/SidebarContext.tsx

@@ -0,0 +1,14 @@
+// Copyright (c) 2026 PowerOn AG
+// All rights reserved.
+
+import { createContext, useContext } from 'react';
+
+export interface SidebarContextValue {
+  collapsed: boolean;
+}
+
+export const SidebarContext = createContext<SidebarContextValue>({ collapsed: false });
+
+export function useSidebar(): SidebarContextValue {
+  return useContext(SidebarContext);
+}

src/pages/ComplianceAuditPage.tsx

@@ -9,12 +9,13 @@
  * Tab D: Neutralization Mappings — FormGeneratorTable + delete
  */
 
-import React, { useState, useCallback, useEffect, useMemo } from 'react';
+import React, { useState, useCallback, useEffect, useMemo, useRef } from 'react';
+import { useSearchParams } from 'react-router-dom';
 import {
   ResponsiveContainer, LineChart, Line, XAxis, YAxis, CartesianGrid,
   Tooltip, BarChart, Bar, PieChart, Pie, Cell,
 } from 'recharts';
-import { FaDownload, FaEye, FaTrash, FaTimes } from 'react-icons/fa';
+import { FaDownload, FaEye, FaTrash } from 'react-icons/fa';
 import api from '../api';
 import { useApiRequest } from '../hooks/useApi';
 import { fetchAttributes } from '../api/attributesApi';
@@ -29,6 +30,11 @@ import {
   resolvePeriod,
   type PeriodValue,
 } from '../components/PeriodPicker';
+import { StackLayout } from '../components/Layout/StackLayout';
+import { Panel } from '../components/Layout/Panel';
+import { LayoutTabs } from '../components/Layout/LayoutTabs';
+import type { LayoutTabItem } from '../components/Layout/types';
+import ViewStack from '../components/Layout/ViewStack';
 import styles from './ComplianceAuditPage.module.css';
 import { mandateDisplayLabel } from '../utils/mandateDisplayUtils';
 
@@ -130,7 +136,7 @@ interface Mandate {
   label?: string;
 }
 
-interface ContentModalData {
+interface ContentDetailData {
   row: any;
   contentInputFull?: string;
   contentOutputFull?: string;
@@ -146,6 +152,7 @@ const _NEUT_PAGE_SIZE = 100;
 export const ComplianceAuditPage: React.FC = () => {
   const { t } = useLanguage();
   const { request } = useApiRequest();
+  const [searchParams, setSearchParams] = useSearchParams();
   const [aiAuditAttrs, setAiAuditAttrs] = useState<AttributeDefinition[]>([]);
   const [auditLogAttrs, setAuditLogAttrs] = useState<AttributeDefinition[]>([]);
   const [neutAttrs, setNeutAttrs] = useState<AttributeDefinition[]>([]);
@@ -161,7 +168,7 @@ export const ComplianceAuditPage: React.FC = () => {
   const [mandates, setMandates] = useState<Mandate[]>([]);
   const [mandatesLoading, setMandatesLoading] = useState(true);
   const [selectedMandateId, setSelectedMandateId] = useState<string | null>(null);
-  const [activeTab, setActiveTab] = useState<TabId>('audit-log');
+  const activeTab = (searchParams.get('tab') as TabId) || 'audit-log';
 
   // ── Tab A: AI-Log state ──
   const [aiEntries, setAiEntries] = useState<any[]>([]);
@@ -186,10 +193,11 @@ export const ComplianceAuditPage: React.FC = () => {
   const [neutPagination, setNeutPagination] = useState<any>(undefined);
   const [neutLoading, setNeutLoading] = useState(false);
 
-  // ── Content View Modal state ──
+  const selectedEntryId = searchParams.get('entryId');
-  const [contentModal, setContentModal] = useState<ContentModalData | null>(null);
+
-  const [contentModalLoading, setContentModalLoading] = useState(false);
+  const _lastAiLogParams = useRef<any>(undefined);
-  const [contentModalTab, setContentModalTab] = useState<'input' | 'output'>('input');
+  const _lastAuditLogParams = useRef<any>(undefined);
+  const _lastNeutParams = useRef<any>(undefined);
 
   // ── Mandate loader ──
 
@@ -218,6 +226,8 @@ export const ComplianceAuditPage: React.FC = () => {
 
   const _loadAiLog = useCallback(async (paginationParams?: any) => {
     if (!selectedMandateId) return;
+    if (paginationParams) _lastAiLogParams.current = paginationParams;
+    else paginationParams = _lastAiLogParams.current;
     setAiLoading(true);
     try {
       const page = paginationParams?.page ?? 1;
@@ -250,6 +260,8 @@ export const ComplianceAuditPage: React.FC = () => {
 
   const _loadAuditLog = useCallback(async (paginationParams?: any) => {
     if (!selectedMandateId) return;
+    if (paginationParams) _lastAuditLogParams.current = paginationParams;
+    else paginationParams = _lastAuditLogParams.current;
     setAuditLoading(true);
     try {
       const page = paginationParams?.page ?? 1;
@@ -297,6 +309,8 @@ export const ComplianceAuditPage: React.FC = () => {
 
   const _loadNeutMappings = useCallback(async (paginationParams?: any) => {
     if (!selectedMandateId) return;
+    if (paginationParams) _lastNeutParams.current = paginationParams;
+    else paginationParams = _lastNeutParams.current;
     setNeutLoading(true);
     try {
       const page = paginationParams?.page ?? 1;
@@ -365,37 +379,19 @@ export const ComplianceAuditPage: React.FC = () => {
 
   useEffect(() => {
     if (!selectedMandateId) return;
-    if (activeTab === 'ai-log') void _loadAiLog();
+    if (activeTab === 'stats') void _loadStats({ dateFrom: statsPeriod.fromDate, dateTo: statsPeriod.toDate });
-    else if (activeTab === 'audit-log') void _loadAuditLog();
-    else if (activeTab === 'stats') void _loadStats({ dateFrom: statsPeriod.fromDate, dateTo: statsPeriod.toDate });
-    else if (activeTab === 'neutralization') void _loadNeutMappings();
   }, [activeTab, selectedMandateId]); // eslint-disable-line react-hooks/exhaustive-deps
 
   // ── Content view handler (modal) ──
 
-  const _handleContentView = useCallback(async (row: any) => {
+  const _handleContentView = useCallback((row: any) => {
     if (!selectedMandateId || !row?.id) return;
-    setContentModalLoading(true);
+    setSearchParams((prev) => {
-    setContentModalTab('input');
+      const next = new URLSearchParams(prev);
-    setContentModal({ row, neutralizationMappings: [] });
+      next.set('entryId', row.id);
-    try {
+      return next;
-      const { data } = await api.get(`/api/audit/ai-log/${row.id}/content`, {
+    }, { replace: true });
-        headers: _mandateHeaders(),
+  }, [selectedMandateId, setSearchParams]);
-      });
-      setContentModal({
-        row,
-        contentInputFull: data?.contentInputFull,
-        contentOutputFull: data?.contentOutputFull,
-        contentInputPreview: data?.contentInputPreview,
-        contentOutputPreview: data?.contentOutputPreview,
-        neutralizationMappings: data?.neutralizationMappings ?? [],
-      });
-    } catch (err) {
-      console.error('Content load failed:', err);
-    } finally {
-      setContentModalLoading(false);
-    }
-  }, [selectedMandateId]); // eslint-disable-line react-hooks/exhaustive-deps
 
   // ── Content download handler ──
 
@@ -435,17 +431,107 @@ export const ComplianceAuditPage: React.FC = () => {
     }
   }, [selectedMandateId]); // eslint-disable-line react-hooks/exhaustive-deps
 
-  // ── Mapping lookup for modal ──
+  const _AiLogDetailView: React.FC = () => {
+    const [contentTab, setContentTab] = useState<'input' | 'output'>('input');
+    const [detail, setDetail] = useState<ContentDetailData | null>(null);
+    const [detailLoading, setDetailLoading] = useState(false);
 
-  const _modalMappingLookup = useMemo(() => {
+    useEffect(() => {
+      if (!selectedMandateId || !selectedEntryId) return;
+      let cancelled = false;
+      (async () => {
+        setDetailLoading(true);
+        try {
+          const { data } = await api.get(`/api/audit/ai-log/${selectedEntryId}/content`, {
+            headers: _mandateHeaders(),
+          });
+          if (!cancelled) {
+            setDetail({
+              row: { id: selectedEntryId },
+              contentInputFull: data?.contentInputFull,
+              contentOutputFull: data?.contentOutputFull,
+              contentInputPreview: data?.contentInputPreview,
+              contentOutputPreview: data?.contentOutputPreview,
+              neutralizationMappings: data?.neutralizationMappings ?? [],
+            });
+          }
+        } catch (err) {
+          console.error('Content load failed:', err);
+        } finally {
+          if (!cancelled) setDetailLoading(false);
+        }
+      })();
+      return () => { cancelled = true; };
+    }, [selectedEntryId, selectedMandateId]); // eslint-disable-line react-hooks/exhaustive-deps
+
+    const mappingLookup = useMemo(() => {
       const map = new Map<string, NeutMapping>();
-    if (contentModal?.neutralizationMappings) {
+      if (detail?.neutralizationMappings) {
-      for (const m of contentModal.neutralizationMappings) {
+        for (const m of detail.neutralizationMappings) {
           map.set(m.id, m);
         }
       }
       return map;
-  }, [contentModal?.neutralizationMappings]);
+    }, [detail?.neutralizationMappings]);
+
+    return (
+      <Panel variant="editor" title={t('AI-Audit Inhalt')} id="ai-audit-content">
+        {detail?.neutralizationMappings && detail.neutralizationMappings.length > 0 && (
+          <div className={styles.modalMappingBar}>
+            <span className={styles.modalMappingLabel}>
+              {t('{n} Platzhalter aufgelöst', { n: String(detail.neutralizationMappings.length) })}
+            </span>
+            <span className={styles.modalMappingHint}>
+              {t('Hover über markierte Platzhalter für Originaltext')}
+            </span>
+          </div>
+        )}
+        <div className={styles.modalTabBar}>
+          <button
+            type="button"
+            className={`${styles.modalTab} ${contentTab === 'input' ? styles.modalTabActive : ''}`}
+            onClick={() => setContentTab('input')}
+          >
+            {t('Input')}
+          </button>
+          <button
+            type="button"
+            className={`${styles.modalTab} ${contentTab === 'output' ? styles.modalTabActive : ''}`}
+            onClick={() => setContentTab('output')}
+          >
+            {t('Output')}
+          </button>
+        </div>
+        <div className={styles.modalBody}>
+          {detailLoading ? (
+            <p className={styles.loadingText}>{t('Lade Inhalt…')}</p>
+          ) : (
+            <div className={styles.modalTextContent}>
+              {contentTab === 'input' ? (
+                (() => {
+                  const text = detail?.contentInputFull
+                    || detail?.contentInputPreview
+                    || t('(kein Input gespeichert)');
+                  return mappingLookup.size > 0
+                    ? _renderHighlightedText(text, mappingLookup)
+                    : text;
+                })()
+              ) : (
+                (() => {
+                  const text = detail?.contentOutputFull
+                    || detail?.contentOutputPreview
+                    || t('(kein Output gespeichert)');
+                  return mappingLookup.size > 0
+                    ? _renderHighlightedText(text, mappingLookup)
+                    : text;
+                })()
+              )}
+            </div>
+          )}
+        </div>
+      </Panel>
+    );
+  };
 
   // ── Column definitions ──
 
@@ -623,107 +709,11 @@ export const ComplianceAuditPage: React.FC = () => {
 
   // ── Render ──
 
-  const _tabs: TabId[] = ['audit-log', 'ai-log', 'neutralization', 'stats'];
+  const auditTabs: LayoutTabItem[] = useMemo(() => {
+    if (!selectedMandateId) return [];
 
-  return (
+    const statsPanel = (
-    <div className={styles.wrap}>
+      <Panel variant="dashboard" title={t('Statistiken')} id="audit-stats">
-      <h2 className={styles.pageTitle}>{t('Compliance & AI-Audit')}</h2>
-      <p className={styles.pageDesc}>
-        {t('Transparente Übersicht aller AI-Datenflüsse und Sicherheitsereignisse Ihres Mandanten.')}
-      </p>
-
-      {/* Mandate selector */}
-      <div className={styles.mandateSelector}>
-        <label className={styles.mandateLabel}>{t('Mandant auswählen')}</label>
-        <select
-          className={styles.mandateSelect}
-          value={selectedMandateId || ''}
-          onChange={e => setSelectedMandateId(e.target.value || null)}
-          disabled={mandatesLoading}
-        >
-          <option value="">{mandatesLoading ? t('Lade…') : t('— Mandant wählen —')}</option>
-          {mandates.map(m => (
-            <option key={m.id} value={m.id}>{mandateDisplayLabel(m)}</option>
-          ))}
-        </select>
-      </div>
-
-      {!selectedMandateId ? (
-        <p className={styles.emptyText}>{t('Bitte wählen Sie einen Mandanten aus.')}</p>
-      ) : (
-      <>
-      {/* Tab bar */}
-      <div className={styles.tabBar}>
-        {_tabs.map(tab => (
-          <button
-            key={tab}
-            className={`${styles.tab} ${activeTab === tab ? styles.tabActive : ''}`}
-            onClick={() => setActiveTab(tab)}
-          >
-            {_tabLabel(tab, t)}
-          </button>
-        ))}
-      </div>
-
-      {/* ── Tab A: AI Data-Flow Log ── */}
-      {activeTab === 'ai-log' && (
-        <div className={styles.tabContent}>
-          <FormGeneratorTable
-            key={`ai-log-${selectedMandateId}`}
-            data={aiEntries}
-            columns={aiLogColumns}
-            loading={aiLoading}
-            pagination={true}
-            pageSize={_AI_LOG_PAGE_SIZE}
-            sortable={true}
-            filterable={true}
-            searchable={true}
-            selectable={false}
-            emptyMessage={t('Keine AI-Audit-Einträge vorhanden.')}
-            onRefresh={_loadAiLog}
-            hookData={aiLogHookData}
-            customActions={[
-              {
-                id: 'viewContent',
-                title: t('Input/Output anzeigen'),
-                icon: <FaEye />,
-                onClick: _handleContentView,
-              },
-              {
-                id: 'downloadContent',
-                title: t('Input/Output herunterladen'),
-                icon: <FaDownload />,
-                onClick: _handleContentDownload,
-              },
-            ]}
-          />
-        </div>
-      )}
-
-      {/* ── Tab B: Audit Log ── */}
-      {activeTab === 'audit-log' && (
-        <div className={styles.tabContent}>
-          <FormGeneratorTable
-            key={`audit-log-${selectedMandateId}`}
-            data={auditEntries}
-            columns={auditLogColumns}
-            loading={auditLoading}
-            pagination={true}
-            pageSize={_AUDIT_LOG_PAGE_SIZE}
-            sortable={true}
-            filterable={true}
-            searchable={true}
-            selectable={false}
-            emptyMessage={t('Keine Audit-Einträge vorhanden.')}
-            onRefresh={_loadAuditLog}
-            hookData={auditLogHookData}
-          />
-        </div>
-      )}
-
-      {/* ── Tab C: Statistics ── */}
-      {activeTab === 'stats' && (
-        <div className={styles.tabContentScrollable}>
         <div className={styles.statsControls}>
           <PeriodPicker
             value={statsPeriod}
@@ -747,7 +737,6 @@ export const ComplianceAuditPage: React.FC = () => {
           <p className={styles.emptyText}>{t('Keine Daten verfügbar.')}</p>
         ) : (
           <>
-              {/* KPIs */}
             <div className={styles.kpiGrid}>
               <div className={styles.kpiCard}>
                 <p className={styles.kpiValue}>{stats.totalCalls}</p>
@@ -769,7 +758,6 @@ export const ComplianceAuditPage: React.FC = () => {
               </div>
             </div>
 
-              {/* Charts row 1: Calls/Day + Cost/Day */}
             <div className={styles.chartRow}>
               <div className={styles.chartBlock}>
                 <h3 className={styles.chartTitle}>{t('AI-Aufrufe pro Tag')}</h3>
@@ -805,7 +793,6 @@ export const ComplianceAuditPage: React.FC = () => {
               </div>
             </div>
 
-              {/* Charts row 2: By Model (pie) + By Feature (bar) */}
             <div className={styles.chartRow}>
               <div className={styles.chartBlock}>
                 <h3 className={styles.chartTitle}>{t('AI-Aufrufe nach Modell')}</h3>
@@ -847,7 +834,6 @@ export const ComplianceAuditPage: React.FC = () => {
               </div>
             </div>
 
-              {/* Top Users */}
             {Object.keys(stats.topUsers).length > 0 && (
               <div className={styles.chartBlock}>
                 <h3 className={styles.chartTitle}>{t('Top-Nutzer nach AI-Aufrufen')}</h3>
@@ -867,12 +853,88 @@ export const ComplianceAuditPage: React.FC = () => {
             )}
           </>
         )}
-        </div>
+      </Panel>
-      )}
+    );
 
-      {/* ── Tab D: Neutralization Mappings ── */}
+    return [
-      {activeTab === 'neutralization' && (
+      {
-        <div className={styles.tabContent}>
+        id: 'audit-log',
+        label: _tabLabel('audit-log', t),
+        render: () => (
+          <Panel variant="table" title={t('Audit-Einträge')} id="audit-log-table">
+            <FormGeneratorTable
+              key={`audit-log-${selectedMandateId}`}
+              data={auditEntries}
+              columns={auditLogColumns}
+              loading={auditLoading}
+              pagination={true}
+              pageSize={_AUDIT_LOG_PAGE_SIZE}
+              sortable={true}
+              filterable={true}
+              searchable={true}
+              selectable={false}
+              initialSort={[{ key: 'timestamp', direction: 'desc' }]}
+              emptyMessage={t('Keine Audit-Einträge vorhanden.')}
+              onRefresh={_loadAuditLog}
+              hookData={auditLogHookData}
+            />
+          </Panel>
+        ),
+      },
+      {
+        id: 'ai-log',
+        label: _tabLabel('ai-log', t),
+        render: () => (
+          <ViewStack entityParam="entryId">
+            <ViewStack.View id="list">
+              <Panel variant="table" title={t('AI-Audit-Einträge')} id="ai-log-table">
+                <FormGeneratorTable
+                  key={`ai-log-${selectedMandateId}`}
+                  data={aiEntries}
+                  columns={aiLogColumns}
+                  loading={aiLoading}
+                  pagination={true}
+                  pageSize={_AI_LOG_PAGE_SIZE}
+                  sortable={true}
+                  filterable={true}
+                  searchable={true}
+                  selectable={false}
+                  initialSort={[{ key: 'timestamp', direction: 'desc' }]}
+                  emptyMessage={t('Keine AI-Audit-Einträge vorhanden.')}
+                  onRefresh={_loadAiLog}
+                  hookData={aiLogHookData}
+                  customActions={[
+                    {
+                      id: 'viewContent',
+                      title: t('Input/Output anzeigen'),
+                      icon: <FaEye />,
+                      onClick: _handleContentView,
+                    },
+                    {
+                      id: 'downloadContent',
+                      title: t('Input/Output herunterladen'),
+                      icon: <FaDownload />,
+                      onClick: _handleContentDownload,
+                    },
+                  ]}
+                />
+              </Panel>
+            </ViewStack.View>
+            <ViewStack.View
+              id="detail"
+              backLabel={t('Zurück zum AI-Datenfluss')}
+              title={t('AI-Audit Inhalt')}
+            >
+              <_AiLogDetailView />
+            </ViewStack.View>
+          </ViewStack>
+        ),
+      },
+      {
+        id: 'neutralization',
+        label: _tabLabel('neutralization', t),
+        render: () => (
+          <Panel variant="table" title={t('Neutralisierungs-Zuordnungen')} id="neutralization-table">
             <FormGeneratorTable
               key={`neut-${selectedMandateId}`}
               data={neutEntries}
@@ -902,93 +964,84 @@ export const ComplianceAuditPage: React.FC = () => {
                 },
               ]}
             />
-        </div>
+          </Panel>
-      )}
+        ),
-      </>
+      },
-      )}
+      {
+        id: 'stats',
+        label: _tabLabel('stats', t),
+        render: () => statsPanel,
+      },
+    ];
+  }, [
+    t,
+    selectedMandateId,
+    auditEntries,
+    auditLogColumns,
+    auditLoading,
+    auditLogHookData,
+    _loadAuditLog,
+    aiEntries,
+    aiLogColumns,
+    aiLoading,
+    aiLogHookData,
+    _loadAiLog,
+    _handleContentView,
+    _handleContentDownload,
+    neutEntries,
+    neutColumns,
+    neutLoading,
+    neutHookData,
+    _loadNeutMappings,
+    _handleDeleteMapping,
+    _handleDeleteMappingsBatch,
+    statsPeriod,
+    statsLoading,
+    stats,
+    _loadStats,
+  ]);
 
-      {/* ── Content View Modal ── */}
+  return (
-      {contentModal && (
+    <StackLayout variant="table">
-        <div className={styles.modalOverlay}>
+      <StackLayout.Header>
-          <div className={styles.modalContainer}>
+        <h1 style={{ fontSize: '1.5rem', fontWeight: 600, margin: 0 }}>{t('Compliance & AI-Audit')}</h1>
-            <div className={styles.modalHeader}>
+        <p className={styles.pageDesc}>
-              <h3 className={styles.modalTitle}>{t('AI-Audit Inhalt')}</h3>
+          {t('Transparente Übersicht aller AI-Datenflüsse und Sicherheitsereignisse Ihres Mandanten.')}
-              <div className={styles.modalMeta}>
+        </p>
-                {contentModal.row?.username || contentModal.row?.userId?.slice(0, 8) || '–'}
+      </StackLayout.Header>
-                {' · '}
+      <StackLayout.Body>
-                {contentModal.row?.aiModel || '–'}
+        <Panel variant="toolbar" title={t('Filter')} id="audit-toolbar">
-                {' · '}
+          <div className={styles.mandateSelector}>
-                {contentModal.row?.timestamp
+            <label className={styles.mandateLabel}>{t('Mandant auswählen')}</label>
-                  ? new Date(contentModal.row.timestamp * 1000).toLocaleString()
+            <select
-                  : '–'}
+              className={styles.mandateSelect}
-              </div>
+              value={selectedMandateId || ''}
-              <button
+              onChange={e => setSelectedMandateId(e.target.value || null)}
-                className={styles.modalClose}
+              disabled={mandatesLoading}
-                onClick={() => setContentModal(null)}
-                title={t('Schliessen')}
             >
-                <FaTimes />
+              <option value="">{mandatesLoading ? t('Lade…') : t('— Mandant wählen —')}</option>
-              </button>
+              {mandates.map(m => (
+                <option key={m.id} value={m.id}>{mandateDisplayLabel(m)}</option>
+              ))}
+            </select>
           </div>
+        </Panel>
 
-            {contentModal.neutralizationMappings.length > 0 && (
+        {!selectedMandateId ? (
-              <div className={styles.modalMappingBar}>
+          <Panel variant="card" title={t('Mandant auswählen')} id="audit-mandate-empty">
-                <span className={styles.modalMappingLabel}>
+            <p className={styles.emptyText}>{t('Bitte wählen Sie einen Mandanten aus.')}</p>
-                  {t('{n} Platzhalter aufgelöst', { n: String(contentModal.neutralizationMappings.length) })}
+          </Panel>
-                </span>
-                <span className={styles.modalMappingHint}>
-                  {t('Hover über markierte Platzhalter für Originaltext')}
-                </span>
-              </div>
-            )}
-
-            <div className={styles.modalTabBar}>
-              <button
-                className={`${styles.modalTab} ${contentModalTab === 'input' ? styles.modalTabActive : ''}`}
-                onClick={() => setContentModalTab('input')}
-              >
-                {t('Input')}
-              </button>
-              <button
-                className={`${styles.modalTab} ${contentModalTab === 'output' ? styles.modalTabActive : ''}`}
-                onClick={() => setContentModalTab('output')}
-              >
-                {t('Output')}
-              </button>
-            </div>
-
-            <div className={styles.modalBody}>
-              {contentModalLoading ? (
-                <p className={styles.loadingText}>{t('Lade Inhalt…')}</p>
         ) : (
-                <div className={styles.modalTextContent}>
+          <LayoutTabs
-                  {contentModalTab === 'input' ? (
+            items={auditTabs}
-                    (() => {
+            urlParam="tab"
-                      const text = contentModal.contentInputFull
+            defaultTab="audit-log"
-                        || contentModal.contentInputPreview
+            preserveSearchParams
-                        || t('(kein Input gespeichert)');
+            lazy
-                      return _modalMappingLookup.size > 0
+          />
-                        ? _renderHighlightedText(text, _modalMappingLookup)
-                        : text;
-                    })()
-                  ) : (
-                    (() => {
-                      const text = contentModal.contentOutputFull
-                        || contentModal.contentOutputPreview
-                        || t('(kein Output gespeichert)');
-                      return _modalMappingLookup.size > 0
-                        ? _renderHighlightedText(text, _modalMappingLookup)
-                        : text;
-                    })()
         )}
-                </div>
+      </StackLayout.Body>
-              )}
-            </div>
-          </div>
-        </div>
-      )}
-
       <ConfirmDialog />
-    </div>
+    </StackLayout>
   );
 };

src/pages/Dashboard.tsx

@@ -15,23 +15,18 @@ import type { NavigationMandate, MandateFeature, FeatureInstance as NavFeatureIn
 import { getPageIcon } from '../config/pageRegistry';
 import { FaArrowRight, FaBuilding } from 'react-icons/fa';
 import OnboardingAssistant from '../components/OnboardingAssistant';
+import { StackLayout } from '../components/Layout/StackLayout';
+import { Panel } from '../components/Layout/Panel';
 import styles from './Dashboard.module.css';
-
 import { useLanguage } from '../providers/language/LanguageContext';
 
-// =============================================================================
-// INSTANCE CARD
-// =============================================================================
-
 interface InstanceCardProps {
   instance: NavFeatureInstance;
   feature: MandateFeature;
 }
 
 const InstanceCard: React.FC<InstanceCardProps> = ({ instance, feature }) => {
-  // Ersten verfügbaren View-Pfad vom Backend nehmen
   const targetPath = instance.views.length > 0 ? instance.views[0].uiPath : undefined;
-
   if (!targetPath) return null;
 
   return (
@@ -52,39 +47,45 @@ const InstanceCard: React.FC<InstanceCardProps> = ({ instance, feature }) => {
   );
 };
 
-// =============================================================================
-// DASHBOARD PAGE
-// =============================================================================
-
 export const DashboardPage: React.FC = () => {
   const { t } = useLanguage();
   const { dynamicBlock, loading } = useNavigation();
 
-  // Alle Mandate und deren Features/Instanzen aus der Navigation
   const mandates: NavigationMandate[] = dynamicBlock?.mandates || [];
 
-  // Gesamtzahl Instanzen und Mandate berechnen
   let totalInstances = 0;
   const totalMandates = mandates.length;
   mandates.forEach(m => m.features.forEach(f => {
     totalInstances += f.instances.length;
   }));
 
+  const mandateSections = mandates
+    .filter(mandate => mandate.features.some(f => f.instances.length > 0))
+    .map(mandate => {
+      const mandateInstances: { instance: NavFeatureInstance; feature: MandateFeature }[] = [];
+      for (const feature of mandate.features) {
+        for (const instance of feature.instances) {
+          mandateInstances.push({ instance, feature });
+        }
+      }
+      return { mandate, mandateInstances };
+    });
+
   if (loading) {
     return (
-      <div className={styles.dashboard}>
+      <StackLayout variant="dashboard">
-        <header className={styles.header}>
+        <StackLayout.Header>
-          <h1>{t('Übersicht')}</h1>
+          <h1 style={{ fontSize: '1.5rem', fontWeight: 600, margin: 0 }}>{t('Übersicht')}</h1>
           <p className={styles.subtitle}>{t('Lade')}</p>
-        </header>
+        </StackLayout.Header>
-      </div>
+      </StackLayout>
     );
   }
 
   return (
-    <div className={styles.dashboard}>
+    <StackLayout variant="dashboard">
-      <header className={styles.header}>
+      <StackLayout.Header>
-        <h1>{t('Übersicht')}</h1>
+        <h1 style={{ fontSize: '1.5rem', fontWeight: 600, margin: 0 }}>{t('Übersicht')}</h1>
         {totalInstances > 0 && (
           <p className={styles.subtitle}>
             {t('{instanceCount} Feature-Instanzen in {mandateCount} Mandanten', {
@@ -93,28 +94,24 @@ export const DashboardPage: React.FC = () => {
             })}
           </p>
         )}
-      </header>
+      </StackLayout.Header>
-
+      <StackLayout.Body>
+        <Panel variant="card" title={t('Erste Schritte')} id="dashboard-onboarding">
           <OnboardingAssistant />
+        </Panel>
 
-      <main className={styles.content}>
+        {mandateSections.map(({ mandate, mandateInstances }) => (
-        {mandates
+          <Panel
-          .filter(mandate => mandate.features.some(f => f.instances.length > 0))
+            key={mandate.id}
-          .map(mandate => {
+            variant="dashboard"
-            // Alle Instanzen dieses Mandats sammeln (flach, ohne Feature-Gruppierung)
+            id={`mandate-dashboard-${mandate.id}`}
-            const mandateInstances: { instance: NavFeatureInstance; feature: MandateFeature }[] = [];
+            title={(
-            for (const feature of mandate.features) {
+              <span className={styles.sectionTitle}>
-              for (const instance of feature.instances) {
-                mandateInstances.push({ instance, feature });
-              }
-            }
-
-            return (
-              <section key={mandate.id} className={styles.featureSection}>
-                <h2 className={styles.sectionTitle}>
                 <FaBuilding />
                 <span>{mandate.uiLabel}</span>
-                </h2>
+              </span>
+            )}
+          >
             <div className={styles.instanceGrid}>
               {mandateInstances.map(({ instance, feature }) => (
                 <InstanceCard
@@ -124,11 +121,10 @@ export const DashboardPage: React.FC = () => {
                 />
               ))}
             </div>
-              </section>
+          </Panel>
-            );
+        ))}
-          })}
+      </StackLayout.Body>
-      </main>
+    </StackLayout>
-    </div>
   );
 };
 

src/pages/FeatureView.module.css

@@ -5,9 +5,10 @@
 .featureView {
   display: flex;
   flex-direction: column;
-  height: 100%;
+  flex: 1;
-  overflow: hidden;
   min-height: 0;
+  min-width: 0;
+  overflow: hidden;
 }
 
 .viewHeader {
@@ -29,31 +30,8 @@
   display: flex;
   flex-direction: column;
   min-height: 0;
-  overflow: auto;
+  min-width: 0;
-  padding: 1.5rem;
+  overflow: hidden;
-}
-
-/* Placeholder View */
-.placeholder {
-  display: flex;
-  flex-direction: column;
-  align-items: center;
-  justify-content: center;
-  min-height: 400px;
-  text-align: center;
-  padding: 2rem;
-}
-
-.placeholder h2 {
-  margin: 0 0 0.5rem;
-  font-size: 1.5rem;
-  font-weight: 600;
-  color: var(--text-primary, #1a1a1a);
-}
-
-.placeholder p {
-  margin: 0;
-  color: var(--text-secondary, #666);
 }
 
 /* Not Found */
@@ -92,12 +70,10 @@
 }
 
 :global(.dark-theme) .viewTitle,
-:global(.dark-theme) .placeholder h2,
 :global(.dark-theme) .notFound h2 {
   color: var(--text-primary-dark, #ffffff);
 }
 
-:global(.dark-theme) .placeholder p,
 :global(.dark-theme) .notFound p,
 :global(.dark-theme) .accessDenied p {
   color: var(--text-secondary-dark, #aaa);
@@ -112,3 +88,9 @@
     padding: 1rem;
   }
 }
+
+/* scrollMode: document — view grows with content, no internal scroll */
+:global(html[data-scroll-mode="document"]) .featureView {
+  flex: 0 0 auto;
+  overflow: visible;
+}

src/pages/FeatureView.tsx

@@ -52,35 +52,6 @@ import styles from './FeatureView.module.css';
 
 import { useLanguage } from '../providers/language/LanguageContext';
 
-// =============================================================================
-// PLACEHOLDER VIEWS (für nicht implementierte Features)
-// =============================================================================
-
-const PlaceholderView: React.FC<{ title: string; description: string }> = ({ title, description }) => (
-  <div className={styles.placeholder}>
-    <h2>{title}</h2>
-    <p>{description}</p>
-  </div>
-);
-
-// Chatworkflow Views
-const ChatworkflowDashboard: React.FC = () => {
-  const { t } = useLanguage();
-  return (
-    <PlaceholderView title={t('Workflow-Dashboard')} description={t('Übersicht der Workflows')} />
-  );
-};
-
-const ChatworkflowRuns: React.FC = () => {
-  const { t } = useLanguage();
-  return <PlaceholderView title={t('Ausführungen')} description={t('Workflow-Ausführungen')} />;
-};
-
-const ChatworkflowFiles: React.FC = () => {
-  const { t } = useLanguage();
-  return <PlaceholderView title={t('Dateien')} description={t('Workflow-Dateien')} />;
-};
-
 // Generic/Fallback
 const NotFound: React.FC = () => {
   const { t } = useLanguage();
@@ -118,11 +89,6 @@ const VIEW_COMPONENTS: Record<string, Record<string, ViewComponent>> = {
     analyse: TrusteeAnalyseView,
     abschluss: TrusteeAbschlussView,
   },
-  chatworkflow: {
-    dashboard: ChatworkflowDashboard,
-    runs: ChatworkflowRuns,
-    files: ChatworkflowFiles,
-  },
   realestate: {
     dashboard: RealEstatePekView,
     'instance-roles': RealEstateInstanceRolesPlaceholder,
@@ -208,9 +174,7 @@ export const FeatureViewPage: React.FC<FeatureViewPageProps> = ({ view }) => {
   
   return (
     <div className={styles.featureView}>
-      <main className={styles.viewContent}>
       <ViewComponent />
-      </main>
     </div>
   );
 };

src/pages/GDPR.tsx

@@ -11,8 +11,9 @@ import { Link } from 'react-router-dom';
 import { FaDownload, FaFileExport, FaShieldAlt, FaSpinner, FaTrash } from 'react-icons/fa';
 import api from '../api';
 import { clearUserDataCache } from '../utils/userCache';
+import { StackLayout } from '../components/Layout/StackLayout';
+import { Panel } from '../components/Layout/Panel';
 import styles from './GDPR.module.css';
-
 import { useLanguage } from '../providers/language/LanguageContext';
 
 type ConsentInfo = {
@@ -27,7 +28,7 @@ type ActionMessage = {
   text: string;
 };
 
-const downloadJson = (data: unknown, fileName: string, mimeType = 'application/json') => {
+const _downloadJson = (data: unknown, fileName: string, mimeType = 'application/json') => {
   const fileBlob = new Blob([JSON.stringify(data, null, 2)], { type: mimeType });
   const fileUrl = URL.createObjectURL(fileBlob);
   const link = document.createElement('a');
@@ -41,7 +42,8 @@ const downloadJson = (data: unknown, fileName: string, mimeType = 'application/j
 
 export const GDPRPage: React.FC = () => {
   const { t } = useLanguage();
-  const contactEmail = 'p.motsch@poweron.swiss';
+  const contactEmail = 'privacy@poweron.swiss';
+  const deleteWord = t('LOESCHEN');
   const [consentInfo, setConsentInfo] = useState<ConsentInfo | null>(null);
   const [isLoadingConsent, setIsLoadingConsent] = useState(true);
   const [consentError, setConsentError] = useState<string | null>(null);
@@ -92,7 +94,7 @@ export const GDPRPage: React.FC = () => {
     setActionMessage(null);
     try {
       const response = await api.get('/api/user/me/data-export');
-      downloadJson(response.data, 'gdpr-data-export.json');
+      _downloadJson(response.data, 'gdpr-data-export.json');
       setActionMessage({ type: 'success', text: t('Datenexport heruntergeladen.') });
     } catch (error: any) {
       console.error('GDPR export failed:', error);
@@ -108,9 +110,9 @@ export const GDPRPage: React.FC = () => {
     setActionMessage(null);
     try {
       const response = await api.get('/api/user/me/data-portability', {
-        headers: { Accept: 'application/ld+json' }
+        headers: { Accept: 'application/ld+json' },
       });
-      downloadJson(response.data, 'gdpr-data-portability.json', 'application/ld+json');
+      _downloadJson(response.data, 'gdpr-data-portability.json', 'application/ld+json');
       setActionMessage({ type: 'success', text: t('Portabler Export heruntergeladen.') });
     } catch (error: any) {
       console.error('GDPR portability export failed:', error);
@@ -122,8 +124,8 @@ export const GDPRPage: React.FC = () => {
 
   const handleDeleteAccount = async () => {
     setActionMessage(null);
-    if (deleteConfirmText !== 'LOESCHEN') {
+    if (deleteConfirmText !== deleteWord) {
-      setActionMessage({ type: 'error', text: t('Bitte geben Sie LOESCHEN ein, um die Löschung zu bestätigen.') });
+      setActionMessage({ type: 'error', text: t('Bitte geben Sie {word} ein, um die Löschung zu bestätigen.', { word: deleteWord }) });
       return;
     }
 
@@ -145,10 +147,11 @@ export const GDPRPage: React.FC = () => {
   };
 
   return (
-    <div className={styles.gdpr}>
+    <StackLayout variant="scroll">
-      <header className={styles.header}>
+      <StackLayout.Header>
+        <div style={{ display: 'flex', alignItems: 'flex-start', justifyContent: 'space-between', gap: '1rem', flexWrap: 'wrap' }}>
           <div>
-          <h1 className={styles.title}>
+            <h1 style={{ fontSize: '1.5rem', fontWeight: 600, margin: 0, display: 'flex', alignItems: 'center', gap: '0.5rem' }}>
               <FaShieldAlt className={styles.titleIcon} />
               {t('DSGVO / Datenschutz')}
             </h1>
@@ -159,11 +162,10 @@ export const GDPRPage: React.FC = () => {
           <Link to="/settings" className={styles.backLink}>
             {t('Zurück zu Einstellungen')}
           </Link>
-      </header>
+        </div>
-
+      </StackLayout.Header>
-      <main className={styles.content}>
+      <StackLayout.Body>
-        <section className={styles.section}>
+        <Panel variant="card" title={t('Ihre Datenrechte')} id="gdpr-data-rights">
-          <h2 className={styles.sectionTitle}>{t('Ihre Datenrechte')}</h2>
           <div className={styles.actions}>
             <div className={styles.actionCard}>
               <h3>{t('Zugriff (Artikel 15)')}</h3>
@@ -226,14 +228,14 @@ export const GDPRPage: React.FC = () => {
                 <div className={styles.deleteConfirm}>
                   <p className={styles.deleteWarning}>
                     {t('Diese Aktion ist unwiderruflich. Geben Sie {word} ein, um zu bestätigen.', {
-                      word: 'LOESCHEN',
+                      word: deleteWord,
                     })}
                   </p>
                   <input
                     className={styles.deleteInput}
                     value={deleteConfirmText}
                     onChange={(event) => setDeleteConfirmText(event.target.value)}
-                    placeholder="LOESCHEN"
+                    placeholder={deleteWord}
                     disabled={isDeleting}
                   />
                   <div className={styles.deleteActions}>
@@ -250,7 +252,7 @@ export const GDPRPage: React.FC = () => {
                     <button
                       className={styles.dangerButton}
                       onClick={handleDeleteAccount}
-                      disabled={isDeleting || deleteConfirmText !== 'LOESCHEN'}
+                      disabled={isDeleting || deleteConfirmText !== deleteWord}
                     >
                       {isDeleting ? (
                         <span className={styles.buttonSpinner}>
@@ -279,10 +281,9 @@ export const GDPRPage: React.FC = () => {
               {actionMessage.text}
             </div>
           )}
-        </section>
+        </Panel>
 
-        <section className={styles.section}>
+        <Panel variant="card" title={t('Verarbeitungsinformationen')} id="gdpr-processing-info">
-          <h2 className={styles.sectionTitle}>{t('Verarbeitungsinformationen')}</h2>
           {isLoadingConsent && <p className={styles.mutedText}>{t('Lade Einwilligungsinformationen')}</p>}
           {consentError && <p className={styles.errorText}>{consentError}</p>}
           {!isLoadingConsent && !consentError && consentInfo && (
@@ -290,51 +291,41 @@ export const GDPRPage: React.FC = () => {
               <div className={styles.infoBlock}>
                 <h3>{t('Gesammelte Daten')}</h3>
                 <ul>
-                  {Object.entries(consentInfo.dataCollected || {}).map(([key, value]) => (
+                  <li><strong>{t('Profil')}:</strong> {t('Name, E-Mail, Benutzername, Spracheinstellungen')}</li>
-                    <li key={key}>
+                  <li><strong>{t('Authentifizierung')}:</strong> {t('Login-Zeitstempel, Authentifizierungsanbieter')}</li>
-                      <strong>{key}:</strong> {value}
+                  <li><strong>{t('Mitgliedschaften')}:</strong> {t('Mandanten- und Feature-Zugriffseinträge')}</li>
-                    </li>
+                  <li><strong>{t('Aktivität')}:</strong> {t('Audit-Logs für sicherheitsrelevante Aktionen')}</li>
-                  ))}
                 </ul>
               </div>
               <div className={styles.infoBlock}>
                 <h3>{t('Verarbeitung')}</h3>
                 <ul>
-                  {Object.entries(consentInfo.dataProcessing || {}).map(([key, value]) => (
+                  <li><strong>{t('Zweck')}:</strong> {t('Bereitstellung von Multi-Tenant-Plattformdiensten')}</li>
-                    <li key={key}>
+                  <li><strong>{t('Rechtsgrundlage')}:</strong> {t('Vertragserfüllung und berechtigtes Interesse')}</li>
-                      <strong>{key}:</strong> {value}
+                  <li><strong>{t('Aufbewahrung')}:</strong> {t('Daten werden aufbewahrt, solange das Konto aktiv ist, und bei Kontolöschung gelöscht')}</li>
-                    </li>
-                  ))}
                 </ul>
               </div>
               <div className={styles.infoBlock}>
                 <h3>{t('Ihre Rechte')}</h3>
                 <ul>
-                  {Object.entries(consentInfo.userRights || {}).map(([key, value]) => (
+                  <li><strong>{t('Auskunft')}:</strong> {t('Datenexport (Artikel 15)')}</li>
-                    <li key={key}>
+                  <li><strong>{t('Datenübertragbarkeit')}:</strong> {t('Portabler Export (Artikel 20)')}</li>
-                      <strong>{key}:</strong> {value}
+                  <li><strong>{t('Löschung')}:</strong> {t('Kontolöschung (Artikel 17)')}</li>
-                    </li>
+                  <li><strong>{t('Berichtigung')}:</strong> {t('Profildaten bearbeiten (Artikel 16)')}</li>
-                  ))}
                 </ul>
               </div>
               <div className={styles.infoBlock}>
                 <h3>{t('Kontakt')}</h3>
                 <ul>
-                  {Object.entries({
+                  <li><strong>{t('E-Mail')}:</strong> {contactEmail}</li>
-                    ...(consentInfo.contact || {}),
+                  <li><strong>{t('Hinweis')}:</strong> {t('Bei Datenschutzanfragen kontaktieren Sie uns bitte mit Ihrer Benutzer-ID.')}</li>
-                    email: contactEmail,
-                  }).map(([key, value]) => (
-                    <li key={key}>
-                      <strong>{key}:</strong> {value}
-                    </li>
-                  ))}
                 </ul>
               </div>
             </div>
           )}
-        </section>
+        </Panel>
-      </main>
+      </StackLayout.Body>
-    </div>
+    </StackLayout>
   );
 };
 

src/pages/IntegrationsOverviewPage.tsx

@@ -8,6 +8,8 @@
 import React, { useMemo } from 'react';
 import { useLanguage } from '../providers/language/LanguageContext';
 import { useIntegrationsOverview, type DataLayerItem, type LiveStats } from '../hooks/useIntegrationsOverview';
+import { StackLayout } from '../components/Layout/StackLayout';
+import { Panel } from '../components/Layout/Panel';
 import styles from './IntegrationsOverview.module.css';
 
 /** de-CH: 1'234'567 */
@@ -211,14 +213,18 @@ export const IntegrationsOverviewPage: React.FC = () => {
   }, [diagram?.dataLayerItems]);
 
   return (
-    <div className={styles.pageRoot}>
+    <StackLayout variant="scroll">
-      <div className={styles.pageIntro}>
+      <StackLayout.Header>
-        <h1 className={styles.pageHeading}>{t('Integrationen')}</h1>
+        <h1 style={{ fontSize: '1.5rem', fontWeight: 600, margin: 0 }}>{t('Integrationen')}</h1>
-        <p className={styles.pageLead}>
+      </StackLayout.Header>
+      <StackLayout.Body>
+        <Panel variant="card" title={t('Einleitung')} id="integrations-lead">
+          <p className={styles.pageLead} style={{ margin: 0 }}>
             {t('PORTA Architektur — Daten, Verarbeitung und Mandanten auf einen Blick.')}
           </p>
-      </div>
+        </Panel>
 
+        <Panel variant="card" title={t('Architekturdiagramm')} id="integrations-diagram">
           <h2 className={styles.srOnly}>
             {t('PORTA Architektur v3: Drei separate Boxen in Schicht 2 — Infrastruktur, PORTA, Nutzen')}
           </h2>
@@ -489,6 +495,8 @@ export const IntegrationsOverviewPage: React.FC = () => {
           )}
             </div>
           </div>
-    </div>
+        </Panel>
+      </StackLayout.Body>
+    </StackLayout>
   );
 };

src/pages/InvitePage.tsx

@@ -32,12 +32,14 @@ import { FaCheckCircle, FaTimesCircle, FaSpinner, FaSignInAlt, FaUserPlus } from
 import styles from './InvitePage.module.css';
 
 import { useLanguage } from '../providers/language/LanguageContext';
+import { useDocumentTitle } from '../hooks/useDocumentTitle';
 
 // Key for storing pending invitation token
 export const PENDING_INVITATION_KEY = 'pendingInvitationToken';
 
 export const InvitePage: React.FC = () => {
     const { t } = useLanguage();
+  useDocumentTitle(t('Einladung annehmen'));
 
   const { token } = useParams<{ token: string }>();
   const navigate = useNavigate();

src/pages/Login.tsx

@@ -14,6 +14,7 @@ import styles from './Login.module.css';
 import { LanguageSelector } from '../components/UiComponents/LanguageSelector';
 
 import { useLanguage } from '../providers/language/LanguageContext';
+import { useDocumentTitle } from '../hooks/useDocumentTitle';
 
 type LoginPhase = 'credentials' | 'mfa_code' | 'mfa_setup';
 
@@ -47,8 +48,9 @@ function Login() {
   const fromLocation = location.state?.from;
   const from = (fromLocation?.pathname || "/") + (fromLocation?.search || "");
   
+  useDocumentTitle(t('Login'));
+
   useEffect(() => {
-    document.title = "PowerOn AI Platform - Login";
     generateAndStoreCSRFToken();
   }, []);
 

src/pages/PasswordResetRequest.tsx

@@ -9,6 +9,7 @@ import { generateAndStoreCSRFToken } from '../utils/csrfUtils';
 import { LanguageSelector } from '../components/UiComponents/LanguageSelector';
 
 import { useLanguage } from '../providers/language/LanguageContext';
+import { useDocumentTitle } from '../hooks/useDocumentTitle';
 
 function PasswordResetRequest() {
     const { t } = useLanguage();
@@ -20,9 +21,9 @@ function PasswordResetRequest() {
   const [validationError, setValidationError] = useState<string | null>(null);
   const [successMessage, setSuccessMessage] = useState<string | null>(null);
 
-  // Set page title and generate CSRF token
+  useDocumentTitle(t('Passwort zurücksetzen'));
+
   useEffect(() => {
-    document.title = "PowerOn AI Platform - Passwort zurücksetzen";
     generateAndStoreCSRFToken();
   }, []);
 

src/pages/RagInventoryPage.module.css

@@ -3,16 +3,6 @@
   max-width: 1100px;
 }
 
-/* ── Page Header ── */
-.pageHeader {
-  display: flex;
-  align-items: flex-start;
-  justify-content: space-between;
-  margin-bottom: 24px;
-  gap: 16px;
-  flex-wrap: wrap;
-}
-
 .headerLeft {
   display: flex;
   align-items: center;

src/pages/RagInventoryPage.tsx

@@ -10,24 +10,29 @@
  */
 
 import React, { useState, useEffect, useCallback, useMemo, useRef } from 'react';
+import { useSearchParams } from 'react-router-dom';
 import { useLanguage } from '../providers/language/LanguageContext';
 import { useApiRequest } from '../hooks/useApi';
 import { useConfirm } from '../hooks/useConfirm';
-import type { RagInventoryDto, RagConnectionDto, RagFeatureInstanceDto } from '../api/connectionApi';
+import type { RagInventoryDto, RagConnectionDto, RagDataSourceDto, RagFeatureInstanceDto } from '../api/connectionApi';
+import api from '../api';
 import { FaDatabase, FaStop, FaSync, FaToggleOn, FaToggleOff, FaRedo, FaExclamationTriangle, FaCheckCircle, FaSlidersH, FaCubes } from 'react-icons/fa';
 import { mandateDisplayLabel } from '../utils/mandateDisplayUtils';
 import { DataSourceSettingsModal } from '../components/UnifiedDataBar/DataSourceSettingsModal';
+import { StackLayout } from '../components/Layout/StackLayout';
+import { Panel } from '../components/Layout/Panel';
 import styles from './RagInventoryPage.module.css';
 
 export const RagInventoryPage: React.FC = () => {
   const { t } = useLanguage();
   const { request } = useApiRequest();
   const { confirm, ConfirmDialog } = useConfirm();
+  const [searchParams, setSearchParams] = useSearchParams();
 
   const [mandates, setMandates] = useState<any[]>([]);
   const [mandatesLoading, setMandatesLoading] = useState(true);
-  const [selectedScope, setSelectedScope] = useState<string>('personal');
+  const selectedScope = searchParams.get('context') || 'personal';
-  const [onlyMyData, setOnlyMyData] = useState(false);
+  const onlyMyData = searchParams.get('onlyMine') === 'true';
 
   const [inventory, setInventory] = useState<RagInventoryDto | null>(null);
   const [loading, setLoading] = useState(false);
@@ -60,13 +65,37 @@ export const RagInventoryPage: React.FC = () => {
         if (!cancelled) {
           const list = Array.isArray(data) ? data : [];
           setMandates(list);
-          if (list.length === 1) setSelectedScope(list[0].id);
+          if (list.length === 1 && selectedScope === 'personal') {
+            setSearchParams((prev) => {
+              const next = new URLSearchParams(prev);
+              next.set('context', list[0].id);
+              return next;
+            }, { replace: true });
+          }
         }
       } catch {}
       finally { if (!cancelled) setMandatesLoading(false); }
     })();
     return () => { cancelled = true; };
-  }, [request]);
+  }, [request, selectedScope, setSearchParams]);
+
+  const _handleScopeChange = useCallback((value: string) => {
+    setSearchParams((prev) => {
+      const next = new URLSearchParams(prev);
+      if (value === 'personal') next.delete('context');
+      else next.set('context', value);
+      return next;
+    }, { replace: true });
+  }, [setSearchParams]);
+
+  const _handleOnlyMyDataChange = useCallback((checked: boolean) => {
+    setSearchParams((prev) => {
+      const next = new URLSearchParams(prev);
+      if (checked) next.set('onlyMine', 'true');
+      else next.delete('onlyMine');
+      return next;
+    }, { replace: true });
+  }, [setSearchParams]);
 
   const _apiEndpoint = useMemo(() => {
     if (selectedScope === 'personal') return '/api/rag/inventory/me';
@@ -141,6 +170,15 @@ export const RagInventoryPage: React.FC = () => {
     } catch {}
   };
 
+  const _handleDsRagToggle = async (connectionId: string, ds: RagDataSourceDto) => {
+    const nodeKey = `ds|${connectionId}|${ds.sourceType}|${ds.path}`;
+    const newValue = !ds.ragIndexEnabled;
+    try {
+      await api.post(`/api/udb/node/${encodeURIComponent(nodeKey)}/flag/ragIndexEnabled`, { value: newValue });
+      _fetchInventory();
+    } catch {}
+  };
+
   const _handleConsentToggle = async (connectionId: string, currentEnabled: boolean) => {
     if (currentEnabled) {
       const ok = await confirm(t('Alle indexierten Inhalte dieser Verbindung werden entfernt. Fortfahren?'), { variant: 'danger', confirmLabel: t('Fortfahren') });
@@ -200,25 +238,30 @@ export const RagInventoryPage: React.FC = () => {
   }, [mandates, t]);
 
   return (
-    <div className={styles.page}>
+    <StackLayout variant="scroll">
       <ConfirmDialog />
-      <header className={styles.pageHeader}>
+      <StackLayout.Header>
-        <div className={styles.headerLeft}>
+        <div style={{ display: 'flex', alignItems: 'flex-start', justifyContent: 'space-between', gap: '1rem', flexWrap: 'wrap' }}>
+          <div style={{ display: 'flex', alignItems: 'flex-start', gap: '0.75rem' }}>
             <FaDatabase className={styles.headerIcon} />
             <div>
-            <h1 className={styles.pageTitle}>{t('RAG-Inventar')}</h1>
+              <h1 style={{ fontSize: '1.5rem', fontWeight: 600, margin: 0 }}>{t('RAG-Inventar')}</h1>
               <p className={styles.pageDesc}>
                 {t('Übersicht und Steuerung der indexierten Wissensdaten.')}
               </p>
             </div>
           </div>
-        <div className={styles.headerRight}>
+        </div>
+      </StackLayout.Header>
+      <StackLayout.Body>
+        <Panel variant="toolbar" title={t('Filter')} id="rag-inventory-toolbar">
+          <div className={styles.headerRight} style={{ marginLeft: 0 }}>
             <div className={styles.filterGroup}>
               <label className={styles.filterLabel}>{t('Kontext:')}</label>
               <select
                 className={styles.scopeSelect}
                 value={selectedScope}
-              onChange={e => setSelectedScope(e.target.value)}
+                onChange={e => _handleScopeChange(e.target.value)}
                 disabled={mandatesLoading}
               >
                 {scopeOptions.map(opt => (
@@ -230,18 +273,27 @@ export const RagInventoryPage: React.FC = () => {
               <input
                 type="checkbox"
                 checked={onlyMyData}
-              onChange={e => setOnlyMyData(e.target.checked)}
+                onChange={e => _handleOnlyMyDataChange(e.target.checked)}
               />
               {t('nur meine Daten')}
             </label>
           </div>
-      </header>
+        </Panel>
 
-      {loading && !inventory && <div className={styles.loading}>{t('Laden...')}</div>}
+        {loading && !inventory && (
-      {error && <div className={styles.error}>{error}</div>}
+          <Panel variant="card" title={t('Laden...')} id="rag-inventory-loading">
+            <div className={styles.loading}>{t('Laden...')}</div>
+          </Panel>
+        )}
+        {error && (
+          <Panel variant="card" title={t('Fehler')} id="rag-inventory-error">
+            <div className={styles.error}>{error}</div>
+          </Panel>
+        )}
 
         {inventory && (
-        <div className={styles.content}>
+          <>
+            <Panel variant="card" title={t('Übersicht')} id="rag-inventory-totals">
               <div className={styles.totals}>
                 <span className={styles.totalLabel}>{t('Total Dateien')}:</span>
                 <strong className={styles.totalValue}>{inventory.totals?.files ?? 0}</strong>
@@ -251,9 +303,11 @@ export const RagInventoryPage: React.FC = () => {
                   <span className={styles.totalBytes}>{(inventory.totals.bytes / 1024 / 1024).toFixed(1)} MB</span>
                 )}
               </div>
+            </Panel>
 
             {(inventory.connections || []).map((conn: RagConnectionDto) => (
-            <div key={conn.id} className={styles.connectionCard}>
+              <Panel key={conn.id} variant="card" title={t('Datenverbindung')} id={`rag-connection-${conn.id}`}>
+                <div className={styles.connectionCard} style={{ border: 'none', padding: 0, background: 'transparent' }}>
               <div className={styles.connectionHeader}>
                 <span className={styles.authority}>{conn.authority}</span>
                 <span className={styles.email}>{conn.externalEmail}</span>
@@ -265,6 +319,14 @@ export const RagInventoryPage: React.FC = () => {
                     {t('{f} Dateien · {c} Chunks', { f: conn.totalFiles, c: conn.totalChunks })}
                   </span>
                 )}
+                <button
+                  className={styles.reindexBtn}
+                  onClick={() => _openSettingsForConnection(conn)}
+                  title={t('Einstellungen')}
+                  style={{ marginLeft: 'auto' }}
+                >
+                  <FaSlidersH size={14} />
+                </button>
                 <button
                   className={styles.consentToggle}
                   onClick={() => _handleConsentToggle(conn.id, conn.knowledgeIngestionEnabled)}
@@ -381,7 +443,14 @@ export const RagInventoryPage: React.FC = () => {
                     >
                       {ds.fileCount} {t('Dateien')} · {ds.chunkCount} {t('Chunks')}
                     </span>
-                    <span className={styles.dsIndex}>{ds.ragIndexEnabled ? '\uD83E\uDDE0' : '\u2014'}</span>
+                    <button
+                      className={styles.dsIndex}
+                      onClick={() => _handleDsRagToggle(conn.id, ds)}
+                      title={ds.ragIndexEnabled ? t('Indexierung deaktivieren') : t('Indexierung aktivieren')}
+                      style={{ cursor: 'pointer', background: 'none', border: 'none', padding: '2px 4px', fontSize: 'inherit' }}
+                    >
+                      {ds.ragIndexEnabled ? '\uD83E\uDDE0' : '\u2014'}
+                    </button>
                   </div>
                 ))}
                 {conn.dataSources.length === 0 && (
@@ -389,21 +458,23 @@ export const RagInventoryPage: React.FC = () => {
                 )}
               </div>
                 </div>
+              </Panel>
             ))}
 
             {(inventory.featureInstances || []).length > 0 && (
-            <>
+              <Panel variant="card" title={(
-              <h2 className={styles.sectionTitle}>
+                <span className={styles.sectionTitle}>
                   <FaCubes style={{ marginRight: 8 }} />
                   {t('Feature-Daten')}
-              </h2>
+                </span>
+              )} id="rag-feature-data">
                 {(inventory.featureInstances || []).map((fi: RagFeatureInstanceDto) => {
                 const runningJobs = fi.runningJobs || [];
                 const lastSuccess = fi.lastSuccess;
                 const lastError = fi.lastError;
 
                 return (
-                  <div key={fi.featureInstanceId} className={styles.connectionCard}>
+                  <div key={fi.featureInstanceId} className={styles.connectionCard} style={{ marginTop: '1rem' }}>
                     <div className={styles.connectionHeader}>
                       <span className={styles.authority}>{fi.featureCode}</span>
                       <span className={styles.email}>{fi.label}</span>
@@ -499,14 +570,17 @@ export const RagInventoryPage: React.FC = () => {
                   </div>
                 );
               })}
-            </>
+              </Panel>
             )}
 
             {(inventory.connections || []).length === 0 && (inventory.featureInstances || []).length === 0 && (
+              <Panel variant="card" title={t('Keine Daten')} id="rag-inventory-empty">
                 <div className={styles.emptyState}>{t('Keine Daten für diese Sicht vorhanden.')}</div>
+              </Panel>
             )}
-        </div>
+          </>
         )}
+      </StackLayout.Body>
 
       <DataSourceSettingsModal
         open={!!settingsModal}
@@ -518,7 +592,7 @@ export const RagInventoryPage: React.FC = () => {
         onSaved={() => _fetchInventory()}
         onClose={() => setSettingsModal(null)}
       />
-    </div>
+    </StackLayout>
   );
 };
 

src/pages/Register.tsx

@@ -11,6 +11,7 @@ import { PENDING_INVITATION_KEY } from './InvitePage';
 import { LanguageSelector } from '../components/UiComponents/LanguageSelector';
 
 import { useLanguage } from '../providers/language/LanguageContext';
+import { useDocumentTitle } from '../hooks/useDocumentTitle';
 
 interface RegisterFormData {
   username: string;
@@ -41,8 +42,9 @@ function Register() {
   const pendingInvitationToken = localStorage.getItem(PENDING_INVITATION_KEY);
   const hasPendingInvitation = !!pendingInvitationToken;
 
+  useDocumentTitle(t('Registrieren'));
+
   useEffect(() => {
-    document.title = "PowerOn AI Platform - Registrieren";
     generateAndStoreCSRFToken();
   }, []);
 

src/pages/Reset.tsx

@@ -9,6 +9,7 @@ import { generateAndStoreCSRFToken } from '../utils/csrfUtils';
 import { LanguageSelector } from '../components/UiComponents/LanguageSelector';
 
 import { useLanguage } from '../providers/language/LanguageContext';
+import { useDocumentTitle } from '../hooks/useDocumentTitle';
 
 function Reset() {
   const { t } = useLanguage();
@@ -27,12 +28,11 @@ function Reset() {
   // Get token from URL
   const token = searchParams.get('token');
 
-  // Set page title and generate CSRF token
+  useDocumentTitle(t('Neues Passwort setzen'));
+
   useEffect(() => {
-    document.title = "PowerOn AI Platform - Neues Passwort setzen";
     generateAndStoreCSRFToken();
 
-    // Validate token exists and format
     if (!token) {
       setTokenError(t('Ungültiger Reset-Link. Bitte fordern Sie einen neuen Link an.'));
     } else if (!_isValidUUID(token)) {

src/pages/Settings.tsx

@@ -5,7 +5,7 @@
  * Route: /settings
  */
 
-import React, { useState, useCallback, useEffect } from 'react';
+import React, { useState, useCallback, useEffect, useMemo } from 'react';
 import { Link } from 'react-router-dom';
 import { useLanguage } from '../providers/language/LanguageContext';
 import { useCurrentUser, useUser } from '../hooks/useUsers';
@@ -15,39 +15,31 @@ import type { AttributeDefinition } from '../components/FormGenerator/FormGenera
 import { useApiRequest } from '../hooks/useApi';
 import { useVoiceCatalog } from '../contexts/VoiceCatalogContext';
 import { mfaStatusApi, mfaSetupApi, mfaConfirmApi, mfaDisableApi } from '../api/authApi';
+import { StackLayout } from '../components/Layout/StackLayout';
+import { Panel } from '../components/Layout/Panel';
+import { LayoutTabs } from '../components/Layout/LayoutTabs';
+import type { LayoutTabItem } from '../components/Layout/types';
 import styles from './Settings.module.css';
 
 // =============================================================================
 // TYPES
 // =============================================================================
 
-type SettingsTab = 'profile' | 'appearance' | 'voice' | 'security' | 'privacy';
-
-function _getTabs(t: (key: string) => string): { key: SettingsTab; label: string }[] {
-  return [
-    { key: 'profile', label: t('Profil') },
-    { key: 'appearance', label: t('Darstellung') },
-    { key: 'voice', label: t('Stimme & Sprache') },
-    { key: 'security', label: t('Sicherheit') },
-    { key: 'privacy', label: t('Datenschutz') },
-  ];
-}
-
 // =============================================================================
-// PROFILE EDIT MODAL
+// PROFILE TAB
 // =============================================================================
 
-interface ProfileEditModalProps {
+interface _ProfileTabProps {
-  isOpen: boolean;
+  currentUser: ReturnType<typeof useCurrentUser>['user'];
-  onClose: () => void;
+  refetchUser: ReturnType<typeof useCurrentUser>['refetch'];
-  userData: any;
+  onSave: (formData: any) => Promise<void>;
-  onSave: (data: any) => Promise<void>;
 }
 
-const ProfileEditModal: React.FC<ProfileEditModalProps> = ({ isOpen, onClose, userData, onSave }) => {
+const _ProfileTab: React.FC<_ProfileTabProps> = ({ currentUser, refetchUser, onSave }) => {
-  const [isSaving, setIsSaving] = useState(false);
-  const [error, setError] = useState<string | null>(null);
   const { t, availableLanguages } = useLanguage();
+  const [isProfileEditing, setIsProfileEditing] = useState(false);
+  const [isSavingProfile, setIsSavingProfile] = useState(false);
+  const [profileError, setProfileError] = useState<string | null>(null);
 
   const languageOptions = availableLanguages.map((l) => ({ value: l.code, label: l.label || l.code }));
 
@@ -57,34 +49,68 @@ const ProfileEditModal: React.FC<ProfileEditModalProps> = ({ isOpen, onClose, us
     { name: 'language', type: 'select', label: t('Sprache'), description: t('Anzeigesprache der Anwendung'), required: true, options: languageOptions },
   ];
 
-  const handleSubmit = async (formData: any) => {
+  const _handleProfileSubmit = async (formData: any) => {
-    setIsSaving(true);
+    setIsSavingProfile(true);
-    setError(null);
+    setProfileError(null);
     try {
       await onSave(formData);
-      onClose();
+      setIsProfileEditing(false);
     } catch (err: any) {
-      setError(err.message || t('Fehler beim Speichern des Profils'));
+      setProfileError(err.message || t('Fehler beim Speichern des Profils'));
     } finally {
-      setIsSaving(false);
+      setIsSavingProfile(false);
     }
   };
 
-  if (!isOpen) return null;
-
   return (
-    <div className={styles.modalOverlay}>
+    <>
-      <div className={styles.modalContent}>
+      <Panel variant="card" title={t('Konto')} id="settings-account">
-        <div className={styles.modalHeader}>
+        {!isProfileEditing ? (
-          <h2>{t('Profil bearbeiten')}</h2>
+          <>
-          <button className={styles.closeButton} onClick={onClose}>&times;</button>
+            <div className={styles.settingRow}>
+              <div className={styles.settingInfo}>
+                <label className={styles.settingLabel}>{t('Profil bearbeiten')}</label>
+                <p className={styles.settingDescription}>{t('Ändern Sie Ihren Namen und')}</p>
               </div>
-        <div className={styles.modalBody}>
+              <div className={styles.settingControl}>
-          {error && <div className={styles.errorMessage}>{error}</div>}
+                <button
-          <FormGeneratorForm attributes={profileAttributes} data={userData} mode="edit" onSubmit={handleSubmit} onCancel={onClose} submitButtonText={isSaving ? t('Speichern') : t('Speichern')} cancelButtonText={t('Abbrechen')} />
+                  className={styles.button}
+                  onClick={async () => { if (refetchUser) await refetchUser(); setIsProfileEditing(true); }}
+                >
+                  {t('Profil bearbeiten')}
+                </button>
               </div>
             </div>
+            {currentUser && (
+              <div className={styles.userInfoCard}>
+                <div className={styles.userInfoRow}><span className={styles.userInfoLabel}>{t('Benutzername')}</span><span className={styles.userInfoValue}>{currentUser.username}</span></div>
+                <div className={styles.userInfoRow}><span className={styles.userInfoLabel}>{t('Name')}</span><span className={styles.userInfoValue}>{currentUser.fullName || '-'}</span></div>
+                <div className={styles.userInfoRow}><span className={styles.userInfoLabel}>{t('E-Mail')}</span><span className={styles.userInfoValue}>{currentUser.email || '-'}</span></div>
               </div>
+            )}
+          </>
+        ) : (
+          <>
+            {profileError && <div className={styles.errorMessage}>{profileError}</div>}
+            <FormGeneratorForm
+              attributes={profileAttributes}
+              data={currentUser}
+              mode="edit"
+              onSubmit={_handleProfileSubmit}
+              onCancel={() => { setIsProfileEditing(false); setProfileError(null); }}
+              submitButtonText={isSavingProfile ? t('Speichern') : t('Speichern')}
+              cancelButtonText={t('Abbrechen')}
+            />
+          </>
+        )}
+      </Panel>
+      <Panel variant="card" title={t('Applikation')} id="settings-application">
+        <div className={styles.infoCard}>
+          <div className={styles.infoRow}><span className={styles.infoLabel}>{t('Version')}</span><span className={styles.infoValue}>2.0.0</span></div>
+          <div className={styles.infoRow}><span className={styles.infoLabel}>{t('Build')}</span><span className={styles.infoValue}>2026.03.23</span></div>
+        </div>
+      </Panel>
+    </>
   );
 };
 
@@ -206,10 +232,10 @@ const VoiceSettingsTab: React.FC = () => {
     return entry ? `${entry.flag ? entry.flag + ' ' : ''}${entry.label}` : code;
   }, [voiceCatalog]);
 
-  if (loading) return <div style={{ padding: '1rem', color: '#888' }}>{t('Einstellungen werden geladen')}</div>;
+  if (loading) return <Panel variant="card" title={t('Spracheingabe')} id="settings-voice-loading"><p style={{ padding: '1rem', color: 'var(--text-secondary, #888)' }}>{t('Einstellungen werden geladen')}</p></Panel>;
 
   return (
-    <>
+    <Panel variant="card" title={t('Spracheingabe')} id="settings-voice">
       {error && <div className={styles.errorMessage}>{error}</div>}
       {success && <div style={{ background: '#f0fdf4', border: '1px solid #bbf7d0', color: '#16a34a', padding: '0.75rem 1rem', borderRadius: 6, marginBottom: '1rem', fontSize: '0.875rem' }}>{success}</div>}
 
@@ -294,7 +320,7 @@ const VoiceSettingsTab: React.FC = () => {
       <button className={styles.button} onClick={_handleSave} disabled={saving} style={{ background: 'var(--primary-color, #2563eb)', color: '#fff', border: 'none', padding: '0.625rem 1.5rem', fontWeight: 600, borderRadius: 6 }}>
         {saving ? t('Speichern') : t('Einstellungen speichern')}
       </button>
-    </>
+    </Panel>
   );
 };
 
@@ -353,10 +379,10 @@ const NeutralizationMappingsTab: React.FC = () => {
     return text.slice(0, 2) + '*'.repeat(Math.min(text.length - 4, 20)) + text.slice(-2);
   };
 
-  if (loading) return <div style={{ padding: '1rem', color: '#888' }}>{t('Mappings werden geladen')}</div>;
+  if (loading) return <Panel variant="card" title={t('Platzhaltermappings')} id="settings-mappings-loading"><p style={{ padding: '1rem', color: 'var(--text-secondary, #888)' }}>{t('Mappings werden geladen')}</p></Panel>;
 
   return (
-    <>
+    <Panel variant="card" title={t('Platzhaltermappings lokal')} id="settings-mappings">
       {error && <div className={styles.errorMessage}>{error}</div>}
 
       <section className={styles.section}>
@@ -419,7 +445,7 @@ const NeutralizationMappingsTab: React.FC = () => {
           </table>
         )}
       </section>
-    </>
+    </Panel>
   );
 };
 
@@ -507,11 +533,11 @@ const MfaSettingsTab: React.FC = () => {
   };
 
   if (loading) {
-    return <section className={styles.section}><p>{t('wird geladen…')}</p></section>;
+    return <Panel variant="card" title={t('Zwei-Faktor-Authentifizierung (MFA)')} id="settings-mfa-loading"><p>{t('wird geladen…')}</p></Panel>;
   }
 
   return (
-    <section className={styles.section}>
+    <Panel variant="card" title={t('Zwei-Faktor-Authentifizierung (MFA)')} id="settings-mfa">
       <h2 className={styles.sectionTitle}>{t('Zwei-Faktor-Authentifizierung (MFA)')}</h2>
       <p className={styles.settingDescription} style={{ marginBottom: '1rem' }}>
         {t('Schützen Sie Ihr Konto mit einem zusätzlichen Bestätigungscode bei der Anmeldung.')}
@@ -605,7 +631,79 @@ const MfaSettingsTab: React.FC = () => {
           </div>
         </div>
       )}
-    </section>
+    </Panel>
+  );
+};
+
+// =============================================================================
+// APPEARANCE TAB
+// =============================================================================
+
+interface _AppearanceTabProps {
+  theme: 'light' | 'dark';
+  onThemeChange: (theme: 'light' | 'dark') => void;
+  currentLanguage: string;
+  onLanguageChange: (lang: string) => void;
+  isSavingLanguage: boolean;
+  languageError: string | null;
+  availableLanguages: Array<{ code: string; label?: string }>;
+}
+
+const _AppearanceTab: React.FC<_AppearanceTabProps> = ({
+  theme,
+  onThemeChange,
+  currentLanguage,
+  onLanguageChange,
+  isSavingLanguage,
+  languageError,
+  availableLanguages,
+}) => {
+  const { t } = useLanguage();
+
+  return (
+    <Panel variant="card" title={t('Darstellung')} id="settings-appearance">
+      <div className={styles.settingRow}>
+        <div className={styles.settingInfo}><label className={styles.settingLabel}>{t('Theme')}</label><p className={styles.settingDescription}>{t('Wählen zwischen Hell- und Dunkelmodus')}</p></div>
+        <div className={styles.settingControl}>
+          <div className={styles.themeToggle}>
+            <button className={`${styles.themeButton} ${theme === 'light' ? styles.active : ''}`} onClick={() => onThemeChange('light')}>{t('Thema Hell')}</button>
+            <button className={`${styles.themeButton} ${theme === 'dark' ? styles.active : ''}`} onClick={() => onThemeChange('dark')}>{t('Thema Dunkel')}</button>
+          </div>
+        </div>
+      </div>
+      <div className={styles.settingRow}>
+        <div className={styles.settingInfo}><label className={styles.settingLabel}>{t('Anzeigesprache')}</label><p className={styles.settingDescription}>{t('Sprachbeschreibung')}{languageError && <span className={styles.errorText}> {languageError}</span>}</p></div>
+        <div className={styles.settingControl}>
+          <select className={styles.select} value={currentLanguage} onChange={(e) => onLanguageChange(e.target.value)} disabled={isSavingLanguage}>
+            {availableLanguages.map((l) => (
+              <option key={l.code} value={l.code}>
+                {l.label || l.code}
+              </option>
+            ))}
+          </select>
+          {isSavingLanguage && <span className={styles.savingIndicator}>{t('Speichern')}</span>}
+        </div>
+      </div>
+    </Panel>
+  );
+};
+
+const _PrivacyTab: React.FC = () => {
+  const { t } = useLanguage();
+
+  return (
+    <>
+      <Panel variant="card" title={t('Datenschutz')} id="settings-privacy">
+        <p className={styles.settingDescription} style={{ marginBottom: '1rem' }}>
+          {t('Datenschutzbeschreibung')}
+        </p>
+        <div className={styles.settingRow}>
+          <div className={styles.settingInfo}><label className={styles.settingLabel}>{t('GDPR Datenschutz')}</label><p className={styles.settingDescription}>{t('Datenexport, Portabilität und Kontolöschung')}</p></div>
+          <div className={styles.settingControl}><Link className={`${styles.button} ${styles.linkButton}`} to="/gdpr">{t('GDPR öffnen')}</Link></div>
+        </div>
+      </Panel>
+      <NeutralizationMappingsTab />
+    </>
   );
 };
 
@@ -618,9 +716,7 @@ export const SettingsPage: React.FC = () => {
   const { user: currentUser, refetch: refetchUser } = useCurrentUser();
   const { updateUser } = useUser();
 
-  const [activeTab, setActiveTab] = useState<SettingsTab>('profile');
   const [theme, setTheme] = useState<'light' | 'dark'>(() => (localStorage.getItem('theme') as 'light' | 'dark') || 'light');
-  const [isProfileModalOpen, setIsProfileModalOpen] = useState(false);
   const [isSavingLanguage, setIsSavingLanguage] = useState(false);
   const [languageError, setLanguageError] = useState<string | null>(null);
 
@@ -661,110 +757,79 @@ export const SettingsPage: React.FC = () => {
     if (newLanguage !== currentLanguage) setLanguage(newLanguage);
     if (refetchUser) await refetchUser();
     window.dispatchEvent(new CustomEvent('userInfoUpdated'));
-  }, [currentUser, updateUser, refetchUser, currentLanguage, setLanguage]);
+  }, [currentUser, updateUser, refetchUser, currentLanguage, setLanguage, t]);
+
+  const settingsTabs: LayoutTabItem[] = useMemo(() => [
+    {
+      id: 'profile',
+      label: t('Profil'),
+      render: () => (
+        <_ProfileTab
+          currentUser={currentUser}
+          refetchUser={refetchUser}
+          onSave={handleProfileSave}
+        />
+      ),
+    },
+    {
+      id: 'appearance',
+      label: t('Darstellung'),
+      render: () => (
+        <_AppearanceTab
+          theme={theme}
+          onThemeChange={handleThemeChange}
+          currentLanguage={currentLanguage}
+          onLanguageChange={handleLanguageChange}
+          isSavingLanguage={isSavingLanguage}
+          languageError={languageError}
+          availableLanguages={availableLanguages}
+        />
+      ),
+    },
+    {
+      id: 'voice',
+      label: t('Stimme & Sprache'),
+      render: () => <VoiceSettingsTab />,
+    },
+    {
+      id: 'security',
+      label: t('Sicherheit'),
+      render: () => <MfaSettingsTab />,
+    },
+    {
+      id: 'privacy',
+      label: t('Datenschutz'),
+      render: () => <_PrivacyTab />,
+    },
+  ], [
+    t,
+    currentUser,
+    refetchUser,
+    handleProfileSave,
+    theme,
+    handleThemeChange,
+    currentLanguage,
+    handleLanguageChange,
+    isSavingLanguage,
+    languageError,
+    availableLanguages,
+  ]);
 
   return (
-    <div className={styles.settings}>
+    <StackLayout variant="scroll">
-      <header className={styles.header}>
+      <StackLayout.Header>
-        <h1>{t('Einstellungen')}</h1>
+        <h1 style={{ fontSize: '1.5rem', fontWeight: 600, margin: 0 }}>{t('Einstellungen')}</h1>
         <p className={styles.subtitle}>{t('Persönliche Einstellungen und Präferenzen')}</p>
-      </header>
+      </StackLayout.Header>
-
+      <StackLayout.Body>
-      <nav style={{ display: 'flex', gap: 0, borderBottom: '1px solid var(--border-color, #e0e0e0)', marginBottom: '1.5rem' }}>
+        <LayoutTabs
-        {_getTabs(t).map(tab => (
+          items={settingsTabs}
-          <button key={tab.key} onClick={() => setActiveTab(tab.key)} style={{
+          urlParam="tab"
-            padding: '10px 20px', border: 'none', borderBottom: activeTab === tab.key ? '2px solid var(--primary-color, #2563eb)' : '2px solid transparent',
+          defaultTab="profile"
-            background: 'none', cursor: 'pointer', fontSize: 14, fontWeight: activeTab === tab.key ? 600 : 400,
+          lazy
-            color: activeTab === tab.key ? 'var(--primary-color, #2563eb)' : 'var(--text-secondary, #888)',
+        />
-          }}>
+      </StackLayout.Body>
-            {tab.label}
+    </StackLayout>
-          </button>
-        ))}
-      </nav>
-
-      <main className={styles.content}>
-        {activeTab === 'profile' && (
-          <>
-            <section className={styles.section}>
-              <h2 className={styles.sectionTitle}>{t('Konto')}</h2>
-              <div className={styles.settingRow}>
-                <div className={styles.settingInfo}>
-                  <label className={styles.settingLabel}>{t('Profil bearbeiten')}</label>
-                  <p className={styles.settingDescription}>{t('Ändern Sie Ihren Namen und')}</p>
-                </div>
-                <div className={styles.settingControl}>
-                  <button className={styles.button} onClick={async () => { await refetchUser(); setIsProfileModalOpen(true); }}>{t('Profil öffnen')}</button>
-                </div>
-              </div>
-              {currentUser && (
-                <div className={styles.userInfoCard}>
-                  <div className={styles.userInfoRow}><span className={styles.userInfoLabel}>{t('Benutzername')}</span><span className={styles.userInfoValue}>{currentUser.username}</span></div>
-                  <div className={styles.userInfoRow}><span className={styles.userInfoLabel}>{t('Name')}</span><span className={styles.userInfoValue}>{currentUser.fullName || '-'}</span></div>
-                  <div className={styles.userInfoRow}><span className={styles.userInfoLabel}>{t('E-Mail')}</span><span className={styles.userInfoValue}>{currentUser.email || '-'}</span></div>
-                </div>
-              )}
-            </section>
-            <section className={styles.section}>
-              <h2 className={styles.sectionTitle}>{t('Applikation')}</h2>
-              <div className={styles.infoCard}>
-                <div className={styles.infoRow}><span className={styles.infoLabel}>{t('Version')}</span><span className={styles.infoValue}>2.0.0</span></div>
-                <div className={styles.infoRow}><span className={styles.infoLabel}>{t('Build')}</span><span className={styles.infoValue}>2026.03.23</span></div>
-              </div>
-            </section>
-          </>
-        )}
-
-        {activeTab === 'appearance' && (
-          <section className={styles.section}>
-            <h2 className={styles.sectionTitle}>{t('Darstellung')}</h2>
-            <div className={styles.settingRow}>
-              <div className={styles.settingInfo}><label className={styles.settingLabel}>{t('Theme')}</label><p className={styles.settingDescription}>{t('Wählen zwischen Hell- und Dunkelmodus')}</p></div>
-              <div className={styles.settingControl}>
-                <div className={styles.themeToggle}>
-                  <button className={`${styles.themeButton} ${theme === 'light' ? styles.active : ''}`} onClick={() => handleThemeChange('light')}>{t('Thema Hell')}</button>
-                  <button className={`${styles.themeButton} ${theme === 'dark' ? styles.active : ''}`} onClick={() => handleThemeChange('dark')}>{t('Thema Dunkel')}</button>
-                </div>
-              </div>
-            </div>
-            <div className={styles.settingRow}>
-              <div className={styles.settingInfo}><label className={styles.settingLabel}>{t('Anzeigesprache')}</label><p className={styles.settingDescription}>{t('Sprachbeschreibung')}{languageError && <span className={styles.errorText}> {languageError}</span>}</p></div>
-              <div className={styles.settingControl}>
-                <select className={styles.select} value={currentLanguage} onChange={(e) => handleLanguageChange(e.target.value)} disabled={isSavingLanguage}>
-                  {availableLanguages.map((l) => (
-                    <option key={l.code} value={l.code}>
-                      {l.label || l.code}
-                    </option>
-                  ))}
-                </select>
-                {isSavingLanguage && <span className={styles.savingIndicator}>{t('Speichern')}</span>}
-              </div>
-            </div>
-          </section>
-        )}
-
-        {activeTab === 'voice' && <VoiceSettingsTab />}
-
-        {activeTab === 'security' && <MfaSettingsTab />}
-
-        {activeTab === 'privacy' && (
-          <>
-            <section className={styles.section}>
-              <h2 className={styles.sectionTitle}>{t('Datenschutz')}</h2>
-              <p className={styles.settingDescription} style={{ marginBottom: '1rem' }}>
-                {t('Datenschutzbeschreibung')}
-              </p>
-              <div className={styles.settingRow}>
-                <div className={styles.settingInfo}><label className={styles.settingLabel}>{t('GDPR Datenschutz')}</label><p className={styles.settingDescription}>{t('Datenexport, Portabilität und Kontolöschung')}</p></div>
-                <div className={styles.settingControl}><Link className={`${styles.button} ${styles.linkButton}`} to="/gdpr">{t('GDPR öffnen')}</Link></div>
-              </div>
-            </section>
-            <NeutralizationMappingsTab />
-          </>
-        )}
-      </main>
-
-      <ProfileEditModal isOpen={isProfileModalOpen} onClose={() => setIsProfileModalOpen(false)} userData={currentUser} onSave={handleProfileSave} />
-    </div>
   );
 };
 

src/pages/Store.tsx

@@ -13,6 +13,8 @@ import { mandateDisplayLabel } from '../utils/mandateDisplayUtils';
 import { useStore, _storeActionKey } from '../hooks/useStore';
 import type { StoreFeature, UserMandate } from '../api/storeApi';
 import { formatBinaryDataSizeFromMebibytes } from '../utils/formatDataSize';
+import { StackLayout } from '../components/Layout/StackLayout';
+import { Panel } from '../components/Layout/Panel';
 import styles from './Store.module.css';
 
 const FEATURE_ICONS: Record<string, React.ReactNode> = {
@@ -23,7 +25,6 @@ const FEATURE_ICONS: Record<string, React.ReactNode> = {
   trustee: <FaShieldAlt />,
 };
 
-/** Fallback when GET /store/features omits description (German i18n keys). */
 const STORE_FEATURE_DESCRIPTION_FALLBACK: Record<string, string> = {
   automation: 'Erstelle und verwalte Automatisierungen, um wiederkehrende Aufgaben effizient zu erledigen.',
   teamsbot: 'Integriere einen AI-Bot in deine Microsoft Teams Meetings und Channels.',
@@ -139,20 +140,21 @@ const FeatureCard: React.FC<FeatureCardProps> = ({
   );
 };
 
-const StorePage: React.FC = () => {
+export const StorePage: React.FC = () => {
   const { t } = useLanguage();
   const { features, mandates, subscriptionInfo, loading, actionLoading, error, activate, deactivate } = useStore();
 
   return (
-    <div className={styles.store}>
+    <StackLayout variant="dashboard">
-      <div className={styles.header}>
+      <StackLayout.Header>
-        <h1>{t('Feature Store')}</h1>
+        <h1 style={{ fontSize: '1.5rem', fontWeight: 600, margin: 0 }}>{t('Feature Store')}</h1>
         <p className={styles.subtitle}>
           {t('Aktiviere Features für dein Konto. Deine Daten sind isoliert und nur für dich sichtbar.')}
         </p>
-      </div>
+      </StackLayout.Header>
-
+      <StackLayout.Body>
         {subscriptionInfo && subscriptionInfo.plan && (
+          <Panel variant="card" title={t('Abonnement')} id="store-subscription">
             <div className={styles.subscriptionBanner}>
               <span>{t('Plan:')} <strong>{subscriptionInfo.plan}</strong></span>
               <span className={styles.bannerSeparator}>
@@ -182,19 +184,29 @@ const StorePage: React.FC = () => {
                 </span>
               )}
             </div>
+          </Panel>
         )}
 
-      {error && <div className={styles.error}>{error}</div>}
+        {error && (
+          <Panel variant="card" title={t('Fehler')} id="store-error">
+            <div className={styles.error}>{error}</div>
+          </Panel>
+        )}
 
         {loading ? (
+          <Panel variant="card" title={t('Laden')} id="store-loading">
             <div className={styles.loading}>
               {t('Lade Features…')}
             </div>
+          </Panel>
         ) : features.length === 0 ? (
+          <Panel variant="card" title={t('Keine Features')} id="store-empty">
             <div className={styles.empty}>
               {t('Keine Features im Store verfügbar.')}
             </div>
+          </Panel>
         ) : (
+          <Panel variant="dashboard" title={t('Features')} id="store-features">
             <div className={styles.grid}>
               {features.map((feature) => (
                 <FeatureCard
@@ -207,8 +219,10 @@ const StorePage: React.FC = () => {
                 />
               ))}
             </div>
+          </Panel>
         )}
-    </div>
+      </StackLayout.Body>
+    </StackLayout>
   );
 };
 

src/pages/admin/AccessManagementHub.tsx

@@ -17,6 +17,8 @@ import {
 } from '../../hooks/useFeatureAccess';
 import { useUserMandates, type Mandate } from '../../hooks/useUserMandates';
 import { FaBuilding, FaCube, FaUsers, FaCogs, FaSync, FaChartBar, FaLink, FaList, FaSitemap } from 'react-icons/fa';
+import { StackLayout } from '../../components/Layout/StackLayout';
+import { Panel } from '../../components/Layout/Panel';
 import { useToast } from '../../contexts/ToastContext';
 import api from '../../api';
 import styles from './Admin.module.css';
@@ -306,7 +308,9 @@ export const AccessManagementHub: React.FC = () => {
 
   if (error && !selectedMandateId) {
     return (
-      <div className={styles.adminPage}>
+      <StackLayout variant="scroll">
+        <StackLayout.Body>
+          <Panel variant="card" title={t('Fehler')} id="access-hub-error">
             <div className={styles.errorContainer}>
               <span className={styles.errorIcon}>⚠️</span>
               <p className={styles.errorMessage}>
@@ -316,21 +320,25 @@ export const AccessManagementHub: React.FC = () => {
                 <FaSync /> {t('Erneut versuchen')}
               </button>
             </div>
-      </div>
+          </Panel>
+        </StackLayout.Body>
+      </StackLayout>
     );
   }
 
   return (
-    <div className={styles.adminPage}>
+    <>
-      <div className={styles.pageHeader}>
+    <StackLayout variant="scroll">
+      <StackLayout.Header>
         <div>
           <h1 className={styles.pageTitle}>{t('Zugriffsverwaltung')}</h1>
           <p className={styles.pageSubtitle}>
             {t('Feature-Instanzen, Benutzer und Rollen an einem Ort verwalten')}
           </p>
         </div>
-      </div>
+      </StackLayout.Header>
-
+      <StackLayout.Body>
+        <Panel variant="toolbar" title={t('Filter')} id="access-hub-toolbar">
       <div className={hubStyles.filters}>
         {/* Filter dropdowns only shown in list view - hierarchy shows everything */}
         {viewMode === 'list' && (
@@ -419,6 +427,7 @@ export const AccessManagementHub: React.FC = () => {
           <FaUsers /> {t('Mandant-Benutzer')}
         </Link>
       </div>
+        </Panel>
 
       {viewMode === 'hierarchy' ? (
         <InstanceHierarchyView
@@ -432,6 +441,7 @@ export const AccessManagementHub: React.FC = () => {
           onOpenDetail={handleOpenDetail}
         />
       ) : !selectedMandateId ? (
+        <Panel variant="card" title={t('Kein Mandant ausgewählt')} id="access-hub-no-mandate">
         <div className={styles.emptyState}>
           <FaBuilding className={styles.emptyIcon} />
           <h3 className={styles.emptyTitle}>{t('Kein Mandant ausgewählt')}</h3>
@@ -439,8 +449,10 @@ export const AccessManagementHub: React.FC = () => {
             {t('Wählen Sie einen Mandanten, um dessen Feature-Instanzen und Zugriffe zu verwalten.')}
           </p>
         </div>
+        </Panel>
       ) : (
         <>
+          <Panel variant="dashboard" title={t('Übersicht')} id="access-hub-overview">
           <div className={hubStyles.overviewRow}>
             <div className={hubStyles.statsCard}>
               <FaChartBar className={hubStyles.statsIcon} />
@@ -493,7 +505,9 @@ export const AccessManagementHub: React.FC = () => {
               </div>
             )}
           </div>
+          </Panel>
 
+          <Panel variant="dashboard" title={t('Feature-Instanzen')} id="access-hub-instances">
           <section className={hubStyles.section}>
             <h2 className={hubStyles.sectionTitle}>{t('Feature-Instanzen')}</h2>
             {loading && filteredInstances.length === 0 ? (
@@ -560,8 +574,11 @@ export const AccessManagementHub: React.FC = () => {
               </div>
             )}
           </section>
+          </Panel>
         </>
       )}
+      </StackLayout.Body>
+    </StackLayout>
 
       {detailInstance && (
         <InstanceDetailModal
@@ -583,7 +600,7 @@ export const AccessManagementHub: React.FC = () => {
           onComplete={handleWizardComplete}
         />
       )}
-    </div>
+    </>
   );
 };
 

src/pages/admin/Admin.module.css

@@ -4,36 +4,6 @@
  * Common styles for all admin pages using FormGeneratorTable
  */
 
-.adminPage {
-  padding: 1.5rem;
-  /* Default: grow with content → scroll on MainLayout .outletShell (expandable panels, long pages). */
-  flex: 0 0 auto;
-  width: 100%;
-  box-sizing: border-box;
-  display: flex;
-  flex-direction: column;
-}
-
-/*
- * FormGeneratorTable expects a bounded height chain (height:100% / flex:1).
- * With default .adminPage (flex:0 0 auto), .tableContainer flex:1 collapses → empty table.
- * Use together: className={`${styles.adminPage} ${styles.adminPageFill}`}
- */
-.adminPage.adminPageFill {
-  flex: 1 1 auto;
-  min-height: 0;
-  overflow: hidden;
-}
-
-.pageHeader {
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-  margin-bottom: 1.5rem;
-  flex-shrink: 0;
-  min-height: 0;
-}
-
 .pageTitle {
   font-size: 1.5rem;
   font-weight: 600;
@@ -211,14 +181,6 @@
   flex-shrink: 0;
 }
 
-.tableContainer {
-  flex: 1;
-  min-height: 0;
-  overflow: hidden;
-  display: flex;
-  flex-direction: column;
-}
-
 .loadingContainer {
   display: flex;
   flex-direction: column;
@@ -728,12 +690,6 @@
 }
 
 @media (max-width: 1024px) {
-  .pageHeader {
-    align-items: flex-start;
-    flex-direction: column;
-    gap: 0.75rem;
-  }
-
   .headerActions {
     width: 100%;
     flex-wrap: wrap;
@@ -751,18 +707,6 @@
 }
 
 @media (max-width: 768px) {
-  .adminPage {
-    padding: 0.75rem;
-  }
-
-  .pageHeader {
-    flex-direction: row;
-    flex-wrap: wrap;
-    align-items: center;
-    gap: 0.5rem;
-    margin-bottom: 0.5rem;
-  }
-
   .pageTitle {
     font-size: 1.1rem;
   }
@@ -784,10 +728,6 @@
     min-height: 32px;
     gap: 0.3rem;
   }
-
-  .tableContainer {
-    min-height: 0;
-  }
 }
 
 /* ============================================== */

src/pages/admin/AdminDatabaseHealthPage.tsx

@@ -19,7 +19,10 @@ import styles from './Admin.module.css';
 import { useLanguage } from '../../providers/language/LanguageContext';
 import { useToast } from '../../contexts/ToastContext';
 import { useConfirm } from '../../hooks/useConfirm';
-import { Tabs } from '../../components/UiComponents/Tabs/Tabs';
+import { StackLayout } from '../../components/Layout/StackLayout';
+import { Panel } from '../../components/Layout/Panel';
+import { LayoutTabs } from '../../components/Layout/LayoutTabs';
+import type { LayoutTabItem } from '../../components/Layout/types';
 import { FormGeneratorTable, type ColumnConfig } from '../../components/FormGenerator/FormGeneratorTable';
 
 
@@ -311,8 +314,8 @@ const StatsTab: React.FC = () => {
   ], [t, databases]);
 
   return (
-    <div style={{ display: 'flex', flexDirection: 'column', flex: 1, minHeight: 0 }}>
+    <>
-      {/* Controls */}
+      <Panel variant="toolbar" title={t('Filter')} id="db-stats-toolbar">
       <div className={styles.filterSection}>
         <div className={styles.filterGroup}>
           <label className={styles.filterLabel}>{t('Datenbank')}</label>
@@ -329,8 +332,9 @@ const StatsTab: React.FC = () => {
           <FaSync className={loading ? 'spinning' : ''} /> {t('Aktualisieren')}
         </button>
       </div>
+      </Panel>
 
-      {/* Summary */}
+      <Panel variant="card" title={t('Zusammenfassung')} id="db-stats-summary">
       <div className={styles.filterSection} style={{ gap: '0.75rem', flexWrap: 'wrap' }}>
         <span className={styles.filterLabel}>{t('{dbs} Datenbanken', { dbs: totals.dbs })}</span>
         <span className={styles.filterLabel}>{t('{tables} Tabellen', { tables: totals.tables })}</span>
@@ -338,11 +342,13 @@ const StatsTab: React.FC = () => {
         <span className={styles.filterLabel}>{t('Total {size}', { size: _formatBytes(totals.size) })}</span>
         <span className={styles.filterLabel}>{t('Index {size}', { size: _formatBytes(totals.idx) })}</span>
       </div>
+      </Panel>
 
-      <div className={styles.tableContainer}>
+      <Panel variant="table" title={t('Tabellen')} id="db-stats-table">
         <FormGeneratorTable
           data={visibleData}
           columns={columns}
+          filterScopeKey="admin"
           loading={loading}
           sortable={true}
           searchable={true}
@@ -357,8 +363,8 @@ const StatsTab: React.FC = () => {
           }}
           emptyMessage={t('Keine Tabellen gefunden')}
         />
-      </div>
+      </Panel>
-    </div>
+    </>
   );
 };
 
@@ -625,10 +631,10 @@ const OrphansTab: React.FC = () => {
   ], [t, databases]);
 
   return (
-    <div style={{ display: 'flex', flexDirection: 'column', flex: 1, minHeight: 0 }}>
+    <>
       <ConfirmDialog />
 
-      {/* Controls */}
+      <Panel variant="toolbar" title={t('Filter')} id="orphans-toolbar">
       <div className={styles.filterSection}>
         <div className={styles.filterGroup}>
           <label className={styles.filterLabel}>{t('Datenbank')}</label>
@@ -671,8 +677,10 @@ const OrphansTab: React.FC = () => {
           )}
         </div>
       </div>
+      </Panel>
 
       {totalOrphans > 0 && (
+        <Panel variant="card" title={t('Warnung')} id="orphans-warning">
         <div className={styles.infoBox} style={{ background: 'var(--warning-bg, #fffbeb)', borderColor: 'var(--warning-color, #d69e2e)' }}>
           <FaExclamationTriangle style={{ marginRight: 8, color: 'var(--warning-color, #d69e2e)' }} />
           {t('{count} verwaiste Einträge in {relations} Beziehungen gefunden', {
@@ -680,12 +688,14 @@ const OrphansTab: React.FC = () => {
             relations: allOrphans.filter(o => o.orphanCount > 0).length,
           })}
         </div>
+        </Panel>
       )}
 
-      <div className={styles.tableContainer}>
+      <Panel variant="table" title={t('Verwaiste Einträge')} id="orphans-table">
         <FormGeneratorTable
           data={visibleData}
           columns={columns}
+          filterScopeKey="admin"
           loading={loading}
           sortable={true}
           searchable={true}
@@ -718,8 +728,8 @@ const OrphansTab: React.FC = () => {
           }}
           emptyMessage={onlyProblems ? t('Keine Orphans gefunden') : t('Keine FK-Beziehungen gefunden')}
         />
-      </div>
+      </Panel>
-    </div>
+    </>
   );
 };
 
@@ -1157,10 +1167,10 @@ const MigrationTab: React.FC = () => {
   };
 
   return (
-    <div style={{ display: 'flex', flexDirection: 'column', flex: 1, minHeight: 0, overflow: 'auto', gap: '2rem', padding: '0.5rem 0' }}>
+    <>
       <ConfirmDialog />
 
-      {/* ---- BACKUP SECTION ---- */}
+      <Panel variant="card" title={t('Backup')} id="db-backup">
       <section>
         <h2 style={{ fontSize: '1.125rem', fontWeight: 600, color: 'var(--text-primary)', margin: '0 0 1rem 0', display: 'flex', alignItems: 'center', gap: '0.5rem' }}>
           <FaDownload /> {t('Backup')}
@@ -1240,17 +1250,10 @@ const MigrationTab: React.FC = () => {
           </>
         )}
       </section>
+      </Panel>
 
-      {/* ---- DIVIDER ---- */}
+      <Panel variant="card" title={t('Restore')} id="db-restore">
-      <hr style={{ border: 'none', borderTop: '1px solid var(--border-color)', margin: 0 }} />
-
-      {/* ---- RESTORE SECTION ---- */}
       <section>
-        <h2 style={{ fontSize: '1.125rem', fontWeight: 600, color: 'var(--text-primary)', margin: '0 0 1rem 0', display: 'flex', alignItems: 'center', gap: '0.5rem' }}>
-          <FaUpload /> {t('Restore')}
-        </h2>
-
-        {/* File upload zone */}
         {!uploadedFile ? (
           <div
             onDrop={_onDrop}
@@ -1467,7 +1470,8 @@ const MigrationTab: React.FC = () => {
           </div>
         )}
       </section>
-    </div>
+      </Panel>
+    </>
   );
 };
 
@@ -1661,9 +1665,10 @@ const LegacyCleanupTab: React.FC = () => {
   ], [t, databases, selected]);
 
   return (
-    <div style={{ display: 'flex', flexDirection: 'column', flex: 1, minHeight: 0 }}>
+    <>
       <ConfirmDialog />
 
+      <Panel variant="toolbar" title={t('Aktionen')} id="legacy-toolbar">
       <div className={styles.filterSection}>
         <div className={styles.headerActions}>
           <button className={styles.secondaryButton} onClick={_fetchLegacy} disabled={loading}>
@@ -1681,20 +1686,24 @@ const LegacyCleanupTab: React.FC = () => {
           )}
         </div>
       </div>
+      </Panel>
 
       {allLegacy.length > 0 && (
+        <Panel variant="card" title={t('Warnung')} id="legacy-warning">
         <div className={styles.infoBox} style={{ background: 'var(--warning-bg, #fffbeb)', borderColor: 'var(--warning-color, #d69e2e)' }}>
           <FaExclamationTriangle style={{ marginRight: 8, color: 'var(--warning-color, #d69e2e)' }} />
           {t('{count} Legacy-Tabellen in {dbs} Datenbanken ({rows} Zeilen, {size})', {
             count: totals.count, dbs: totals.dbs, rows: _formatNumber(totals.rows), size: _formatBytes(totals.size),
           })}
         </div>
+        </Panel>
       )}
 
-      <div className={styles.tableContainer}>
+      <Panel variant="table" title={t('Legacy-Tabellen')} id="legacy-table">
         <FormGeneratorTable
           data={visibleData}
           columns={columns}
+          filterScopeKey="admin"
           loading={loading}
           sortable={true}
           searchable={true}
@@ -1718,8 +1727,8 @@ const LegacyCleanupTab: React.FC = () => {
           }}
           emptyMessage={t('Keine Legacy-Tabellen gefunden')}
         />
-      </div>
+      </Panel>
-    </div>
+    </>
   );
 };
 
@@ -1731,40 +1740,41 @@ const LegacyCleanupTab: React.FC = () => {
 export const AdminDatabaseHealthPage: React.FC = () => {
   const { t } = useLanguage();
 
-  const tabs = useMemo(() => [
+  const tabs: LayoutTabItem[] = useMemo(() => [
     {
       id: 'stats',
       label: t('Statistiken'),
-      content: <StatsTab />,
+      render: () => <StatsTab />,
     },
     {
       id: 'orphans',
       label: t('Orphan Cleanup'),
-      content: <OrphansTab />,
+      render: () => <OrphansTab />,
     },
     {
       id: 'legacy',
       label: t('Legacy Cleanup'),
-      content: <LegacyCleanupTab />,
+      render: () => <LegacyCleanupTab />,
     },
     {
       id: 'migration',
       label: t('Migration'),
-      content: <MigrationTab />,
+      render: () => <MigrationTab />,
     },
   ], [t]);
 
   return (
-    <div className={`${styles.adminPage} ${styles.adminPageFill}`}>
+    <StackLayout variant="table">
-      <div className={styles.pageHeader}>
+      <StackLayout.Header>
         <div>
           <h1 className={styles.pageTitle}>{t('Datenbank-Gesundheit')}</h1>
           <p className={styles.pageSubtitle}>{t('Tabellenstatistiken, verwaiste Datensaetze und Migration')}</p>
         </div>
-      </div>
+      </StackLayout.Header>
-
+      <StackLayout.Body>
-      <Tabs tabs={tabs} defaultTabId="stats" />
+        <LayoutTabs items={tabs} urlParam="tab" defaultTab="stats" lazy />
-    </div>
+      </StackLayout.Body>
+    </StackLayout>
   );
 };
 

src/pages/admin/AdminDemoConfigPage.tsx

@@ -9,6 +9,8 @@
 
 import React, { useState, useEffect, useCallback } from 'react';
 import { FaPlay, FaTrash, FaSync, FaCubes, FaCopy, FaKey } from 'react-icons/fa';
+import { StackLayout } from '../../components/Layout/StackLayout';
+import { Panel } from '../../components/Layout/Panel';
 import api from '../../api';
 import styles from './Admin.module.css';
 import demoStyles from './AdminDemoConfigPage.module.css';
@@ -111,22 +113,30 @@ export const AdminDemoConfigPage: React.FC = () => {
   };
 
   return (
-    <div className={styles.adminPage}>
+    <StackLayout variant="dashboard">
-      <div className={styles.pageHeader}>
+      <StackLayout.Header>
         <div>
           <h1 className={styles.pageTitle}>{t('Demo-Konfigurationen')}</h1>
           <p className={styles.pageSubtitle}>{t('Demo-Umgebungen für Präsentationen und Tests laden oder entfernen.')}</p>
         </div>
+      </StackLayout.Header>
+      <StackLayout.Body>
+        <Panel variant="toolbar" title={t('Aktionen')} id="demo-toolbar">
           <div className={styles.headerActions}>
             <button className={styles.secondaryButton} onClick={_fetchConfigs} disabled={loading}>
               <FaSync /> {t('Aktualisieren')}
             </button>
           </div>
-      </div>
+        </Panel>
 
-      {error && <div className={demoStyles.errorBanner}>{error}</div>}
+        {error && (
+          <Panel variant="card" title={t('Fehler')} id="demo-error">
+            <div className={demoStyles.errorBanner}>{error}</div>
+          </Panel>
+        )}
 
         {lastResult && (
+          <Panel variant="card" title={t('Ergebnis')} id="demo-result">
             <div className={lastResult.status === 'ok' ? demoStyles.successBanner : demoStyles.errorBanner}>
               <strong>{lastResult.action === 'load' ? t('Geladen') : t('Entfernt')}:</strong>{' '}
               {lastResult.status === 'ok' ? (
@@ -138,8 +148,10 @@ export const AdminDemoConfigPage: React.FC = () => {
                 <_CredentialsBox credentials={lastResult.credentials} />
               )}
             </div>
+          </Panel>
         )}
 
+        <Panel variant="dashboard" title={t('Demo-Konfigurationen')} id="demo-configs">
           {loading && configs.length === 0 ? (
             <div className={demoStyles.loadingState}>{t('Lade…')}</div>
           ) : configs.length === 0 ? (
@@ -179,9 +191,10 @@ export const AdminDemoConfigPage: React.FC = () => {
               ))}
             </div>
           )}
-
+        </Panel>
+      </StackLayout.Body>
       <ConfirmDialog />
-    </div>
+    </StackLayout>
   );
 };
 

src/pages/admin/AdminFeatureAccessPage.tsx

@@ -14,6 +14,8 @@ import { useFeatureStore } from '../../stores/featureStore';
 import { FormGeneratorTable } from '../../components/FormGenerator/FormGeneratorTable';
 import { FormGeneratorForm, type AttributeDefinition } from '../../components/FormGenerator/FormGeneratorForm';
 import { FaPlus, FaSync, FaCube, FaBuilding, FaCogs, FaEdit } from 'react-icons/fa';
+import { StackLayout } from '../../components/Layout/StackLayout';
+import { Panel } from '../../components/Layout/Panel';
 import { useToast } from '../../contexts/ToastContext';
 import api from '../../api';
 import { resolveColumnTypes } from '../../utils/columnTypeResolver';
@@ -61,8 +63,8 @@ export const AdminFeatureAccessPage: React.FC = () => {
   const [createFeatureCode, setCreateFeatureCode] = useState<string>('');
   const [createLabel, setCreateLabel] = useState<string>(''); // Label field value
   
-  // Ref to track form data for featureCode detection
   const formDataRef = useRef<Record<string, any>>({});
+  const _lastTableParams = useRef<any>(undefined);
 
   // Load features, mandates, and attributes on mount
   useEffect(() => {
@@ -80,12 +82,22 @@ export const AdminFeatureAccessPage: React.FC = () => {
     }).catch(() => setBackendAttributes([]));
   }, [fetchFeatures, fetchMandates]);
 
-  // Load instances when mandate changes
+  const _refetchInstances = React.useCallback(async (paginationParams?: any) => {
+    if (!selectedMandateId) return;
+    if (paginationParams && typeof paginationParams === 'object') {
+      _lastTableParams.current = paginationParams;
+    } else {
+      paginationParams = _lastTableParams.current;
+    }
+    if (paginationParams) return fetchInstances(paginationParams);
+    return fetchInstances(selectedMandateId);
+  }, [selectedMandateId, fetchInstances]);
+
   useEffect(() => {
     if (selectedMandateId) {
-      fetchInstances(selectedMandateId);
+      _lastTableParams.current = undefined;
     }
-  }, [selectedMandateId, fetchInstances]);
+  }, [selectedMandateId]);
 
   const _rawColumns: ColumnConfig[] = useMemo(() => [
     { key: 'label', label: t('Name'), sortable: true, filterable: true, searchable: true, width: 200 },
@@ -145,8 +157,8 @@ export const AdminFeatureAccessPage: React.FC = () => {
         setCreateFeatureCode('');
         setCreateLabel('');
         formDataRef.current = {};
-        fetchInstances(selectedMandateId);
+        _refetchInstances();
-        loadFeatures(); // Refresh global navigation cache
+        loadFeatures();
         showSuccess(t('Feature-Instanz erstellt'), t('Die Instanz "{name}" wurde erfolgreich erstellt.', { name: createLabel }));
       } else {
         showError(t('Fehler'), result.error || t('Fehler beim Erstellen der Feature-Instanz'));
@@ -183,8 +195,8 @@ export const AdminFeatureAccessPage: React.FC = () => {
       if (result.success) {
         setShowEditModal(false);
         setEditingInstance(null);
-        fetchInstances(selectedMandateId);
+        _refetchInstances();
-        loadFeatures(); // Refresh global navigation cache
+        loadFeatures();
         showSuccess(t('Feature-Instanz aktualisiert'), t('Die Instanz "{name}" wurde erfolgreich aktualisiert.', { name: data.label }));
       } else {
         showError(t('Fehler'), result.error || t('Fehler beim Aktualisieren der Feature-Instanz'));
@@ -262,28 +274,33 @@ export const AdminFeatureAccessPage: React.FC = () => {
 
   if (error && !selectedMandateId) {
     return (
-      <div className={`${styles.adminPage} ${styles.adminPageFill}`}>
+      <StackLayout variant="table">
+        <StackLayout.Body>
+          <Panel variant="card" title={t('Fehler')} id="feature-access-error">
             <div className={styles.errorContainer}>
               <span className={styles.errorIcon}>⚠️</span>
-          <p className={styles.errorMessage}>Fehler: {error}</p>
+              <p className={styles.errorMessage}>{t('Fehler')}: {error}</p>
               <button className={styles.secondaryButton} onClick={() => fetchFeatures()}>
                 <FaSync /> {t('Erneut versuchen')}
               </button>
             </div>
-      </div>
+          </Panel>
+        </StackLayout.Body>
+      </StackLayout>
     );
   }
 
   return (
-    <div className={`${styles.adminPage} ${styles.adminPageFill}`}>
+    <>
-      <div className={styles.pageHeader}>
+    <StackLayout variant="table">
+      <StackLayout.Header>
         <div>
           <h1 className={styles.pageTitle}>{t('Feature-Instanzen')}</h1>
           <p className={styles.pageSubtitle}>{t('Verwalten Sie Feature-Instanzen für jeden')}</p>
         </div>
-      </div>
+      </StackLayout.Header>
-
+      <StackLayout.Body>
-      {/* Mandate Selector */}
+        <Panel variant="toolbar" title={t('Filter')} id="feature-access-toolbar">
           <div className={styles.filterSection}>
         <div className={styles.filterGroup}>
           <label className={styles.filterLabel}>
@@ -308,7 +325,7 @@ export const AdminFeatureAccessPage: React.FC = () => {
           <div className={styles.headerActions}>
             <button
               className={styles.secondaryButton}
-              onClick={() => fetchInstances(selectedMandateId)}
+              onClick={() => _refetchInstances()}
               disabled={loading}
             >
               <FaSync className={loading ? 'spinning' : ''} /> {t('Aktualisieren')}
@@ -328,9 +345,10 @@ export const AdminFeatureAccessPage: React.FC = () => {
           </div>
         )}
           </div>
+        </Panel>
 
-      {/* Available Features Info / Empty Features Warning */}
       {features.length > 0 ? (
+        <Panel variant="card" title={t('Verfügbare Features')} id="feature-access-features">
           <div className={styles.infoBox}>
           <FaCube style={{ marginRight: 8 }} />
           <span>{t('Verfügbare Features')} </span>
@@ -341,7 +359,9 @@ export const AdminFeatureAccessPage: React.FC = () => {
             </span>
           ))}
         </div>
+        </Panel>
       ) : selectedMandateId && !loading ? (
+        <Panel variant="card" title={t('Keine Features geladen')} id="feature-access-no-features">
         <div className={styles.infoBox} style={{ borderColor: 'var(--error-color, #dc3545)', backgroundColor: 'var(--error-bg, rgba(220, 53, 69, 0.1))' }}>
           <FaCube style={{ marginRight: 8 }} />
           <span>
@@ -358,10 +378,11 @@ export const AdminFeatureAccessPage: React.FC = () => {
             <FaSync /> {t('Features erneut laden')}
           </button>
         </div>
+        </Panel>
       ) : null}
 
-      {/* Content */}
       {!selectedMandateId ? (
+        <Panel variant="card" title={t('Kein Mandant ausgewählt')} id="feature-access-no-mandate">
           <div className={styles.emptyState}>
           <FaBuilding className={styles.emptyIcon} />
           <h3 className={styles.emptyTitle}>{t('Kein Mandant ausgewählt')}</h3>
@@ -369,12 +390,14 @@ export const AdminFeatureAccessPage: React.FC = () => {
             {t('Wählen Sie einen Mandanten aus, um dessen Feature-Instanzen zu verwalten.')}
           </p>
         </div>
+        </Panel>
       ) : (
-        <div className={styles.tableContainer}>
+        <Panel variant="table" title={t('Feature-Instanzen')} id="feature-access-table">
           <FormGeneratorTable
             data={instances}
             columns={columns}
             apiEndpoint="/api/features/instances"
+            filterScopeKey={selectedMandateId || 'admin'}
             loading={loading}
             pagination={true}
             pageSize={25}
@@ -413,14 +436,16 @@ export const AdminFeatureAccessPage: React.FC = () => {
               }
             ]}
             hookData={{
-              refetch: fetchInstances,
+              refetch: _refetchInstances,
               pagination: instancesPagination,
               handleDelete: handleDeleteInstance,
             }}
             emptyMessage={t('Keine Feature-Instanzen gefunden')}
           />
-        </div>
+        </Panel>
       )}
+      </StackLayout.Body>
+    </StackLayout>
 
       {/* Create Instance Modal */}
       {showCreateModal && (
@@ -563,7 +588,7 @@ export const AdminFeatureAccessPage: React.FC = () => {
           </div>
         </div>
       )}
-    </div>
+    </>
   );
 };
 

src/pages/admin/AdminFeatureInstanceUsersPage.tsx

@@ -7,12 +7,14 @@
  * Allows adding, removing, and updating user roles within feature instances.
  */
 
-import React, { useState, useEffect, useMemo, useCallback } from 'react';
+import React, { useState, useEffect, useMemo, useCallback, useRef } from 'react';
 import { useFeatureAccess, type FeatureAccessUser, type FeatureInstanceRole, type PaginationParams, type PaginationMetadata } from '../../hooks/useFeatureAccess';
 import { useUserMandates } from '../../hooks/useUserMandates';
 import { FormGeneratorTable } from '../../components/FormGenerator/FormGeneratorTable';
 import { FormGeneratorForm, type AttributeDefinition } from '../../components/FormGenerator/FormGeneratorForm';
 import { FaPlus, FaSync, FaBuilding, FaCube } from 'react-icons/fa';
+import { StackLayout } from '../../components/Layout/StackLayout';
+import { Panel } from '../../components/Layout/Panel';
 import { useToast } from '../../contexts/ToastContext';
 import { useFeatureStore } from '../../stores/featureStore';
 import api from '../../api';
@@ -34,7 +36,6 @@ export const AdminFeatureInstanceUsersPage: React.FC = () => {
     loading,
     error,
     fetchFeatures,
-    fetchInstanceUsers,
     addUserToInstance,
     removeUserFromInstance,
     updateInstanceUserRoles,
@@ -68,6 +69,7 @@ export const AdminFeatureInstanceUsersPage: React.FC = () => {
   const [, setIsSubmitting] = useState(false);
   const [usersLoading, setUsersLoading] = useState(false);
   const [usersPagination, setUsersPagination] = useState<PaginationMetadata | null>(null);
+  const _lastTableParams = useRef<any>(undefined);
 
   // Extract mandateId and instanceId from combined key
   const selectedMandateId = useMemo(() => {
@@ -135,21 +137,13 @@ export const AdminFeatureInstanceUsersPage: React.FC = () => {
     loadCombinedOptions();
   }, [fetchFeatures, fetchMandates]);
 
-  // Load users and roles when instance changes
   useEffect(() => {
     if (selectedMandateId && selectedInstanceId) {
-      setUsersLoading(true);
+      _lastTableParams.current = undefined;
-      Promise.all([
+      fetchInstanceRoles(selectedMandateId, selectedInstanceId)
-        fetchInstanceUsers(selectedMandateId, selectedInstanceId),
+        .then(setInstanceRoles);
-        fetchInstanceRoles(selectedMandateId, selectedInstanceId),
-      ]).then(([users, roles]) => {
-        setInstanceUsers(users);
-        setInstanceRoles(roles);
-      }).finally(() => {
-        setUsersLoading(false);
-      });
     }
-  }, [selectedMandateId, selectedInstanceId, fetchInstanceUsers, fetchInstanceRoles]);
+  }, [selectedMandateId, selectedInstanceId, fetchInstanceRoles]);
 
   // Load mandate members for the add modal (only users who are members of the selected mandate)
   useEffect(() => {
@@ -170,12 +164,15 @@ export const AdminFeatureInstanceUsersPage: React.FC = () => {
     }).catch(() => setAllUsers([]));
   }, [selectedMandateId]);
 
-  // Refresh instance users with optional pagination
   const refreshUsers = useCallback(async (paginationParams?: PaginationParams) => {
     if (selectedMandateId && selectedInstanceId) {
+      if (paginationParams && Object.keys(paginationParams).length > 0) {
+        _lastTableParams.current = paginationParams;
+      } else {
+        paginationParams = _lastTableParams.current;
+      }
       setUsersLoading(true);
       try {
-        // Build query params
         const params = new URLSearchParams();
         if (paginationParams && Object.keys(paginationParams).length > 0) {
           params.append('pagination', JSON.stringify(paginationParams));
@@ -403,7 +400,9 @@ export const AdminFeatureInstanceUsersPage: React.FC = () => {
 
   if (error && !selectedCombinedKey) {
     return (
-      <div className={`${styles.adminPage} ${styles.adminPageFill}`}>
+      <StackLayout variant="table">
+        <StackLayout.Body>
+          <Panel variant="card" title={t('Fehler')} id="fi-users-error">
             <div className={styles.errorContainer}>
               <span className={styles.errorIcon}>⚠️</span>
               <p className={styles.errorMessage}>
@@ -413,20 +412,23 @@ export const AdminFeatureInstanceUsersPage: React.FC = () => {
                 <FaSync /> {t('Erneut versuchen')}
               </button>
             </div>
-      </div>
+          </Panel>
+        </StackLayout.Body>
+      </StackLayout>
     );
   }
 
   return (
-    <div className={`${styles.adminPage} ${styles.adminPageFill}`}>
+    <>
-      <div className={styles.pageHeader}>
+    <StackLayout variant="table">
+      <StackLayout.Header>
         <div>
           <h1 className={styles.pageTitle}>{t('Feature-Instanz-Benutzer')}</h1>
           <p className={styles.pageSubtitle}>{t('Verwalten Sie Benutzerzugriffe auf Feature-Instanzen')}</p>
         </div>
-      </div>
+      </StackLayout.Header>
-
+      <StackLayout.Body>
-      {/* Combined Selector: Mandate + Feature Instance */}
+        <Panel variant="toolbar" title={t('Filter')} id="fi-users-toolbar">
           <div className={styles.filterSection}>
         <div className={styles.filterGroup} style={{ flex: 1, maxWidth: 500 }}>
           <label className={styles.filterLabel}>
@@ -482,9 +484,10 @@ export const AdminFeatureInstanceUsersPage: React.FC = () => {
           </div>
         )}
           </div>
+        </Panel>
 
-      {/* Info box when instance is selected */}
       {selectedOption && (
+        <Panel variant="card" title={t('Ausgewählte Instanz')} id="fi-users-selection">
           <div className={styles.infoBox}>
           <FaBuilding style={{ marginRight: 8 }} />
           <span>
@@ -496,10 +499,11 @@ export const AdminFeatureInstanceUsersPage: React.FC = () => {
             {t('Instanz')}: <strong>{selectedOption.instanceLabel}</strong> ({selectedOption.featureCode})
           </span>
         </div>
+        </Panel>
       )}
 
-      {/* Roles info box */}
       {selectedInstance && instanceRoles.length > 0 && (
+        <Panel variant="card" title={t('Verfügbare Rollen')} id="fi-users-roles">
           <div className={styles.infoBox}>
           <span>{t('Verfügbare Rollen')} </span>
           {instanceRoles.map((r, i) => (
@@ -509,18 +513,20 @@ export const AdminFeatureInstanceUsersPage: React.FC = () => {
             </span>
           ))}
         </div>
+        </Panel>
       )}
 
-      {/* Warning if no roles available */}
       {selectedInstance && instanceRoles.length === 0 && !usersLoading && (
+        <Panel variant="card" title={t('Keine Rollen')} id="fi-users-no-roles">
         <div className={styles.infoBox} style={{ borderColor: 'var(--warning-color, #d69e2e)', backgroundColor: 'var(--warning-bg, rgba(214, 158, 46, 0.12))' }}>
           <span>⚠️ </span>
           <span>{t('Diese Instanz hat noch keine')}</span>
         </div>
+        </Panel>
       )}
 
-      {/* Content */}
       {!selectedCombinedKey ? (
+        <Panel variant="card" title={t('Keine Feature-Instanz ausgewählt')} id="fi-users-empty">
           <div className={styles.emptyState}>
           <FaCube className={styles.emptyIcon} />
           <h3 className={styles.emptyTitle}>{t('Keine Feature-Instanz ausgewählt')}</h3>
@@ -530,12 +536,14 @@ export const AdminFeatureInstanceUsersPage: React.FC = () => {
               : t('Wählen Sie eine Feature-Instanz aus')}
           </p>
         </div>
+        </Panel>
       ) : (
-        <div className={styles.tableContainer}>
+        <Panel variant="table" title={t('Benutzer')} id="fi-users-table">
           <FormGeneratorTable
             data={instanceUsers}
             columns={columns}
             apiEndpoint={selectedInstanceId ? `/api/features/instances/${selectedInstanceId}/users` : undefined}
+            filterScopeKey={selectedMandateId || 'admin'}
             loading={usersLoading}
             pagination={true}
             pageSize={25}
@@ -570,8 +578,10 @@ export const AdminFeatureInstanceUsersPage: React.FC = () => {
             }}
             emptyMessage={t('Keine Benutzer gefunden')}
           />
-        </div>
+        </Panel>
       )}
+      </StackLayout.Body>
+    </StackLayout>
 
       {/* Add User Modal */}
       {showAddModal && (
@@ -635,7 +645,7 @@ export const AdminFeatureInstanceUsersPage: React.FC = () => {
           </div>
         </div>
       )}
-    </div>
+    </>
   );
 };
 

src/pages/admin/AdminFeatureRolesPage.tsx

@@ -12,11 +12,13 @@
  * - Actions: Create feature role, edit description, manage AccessRules, delete role
  */
 
-import React, { useState, useEffect, useMemo, useCallback } from 'react';
+import React, { useState, useEffect, useMemo, useCallback, useRef } from 'react';
 import { FormGeneratorTable } from '../../components/FormGenerator/FormGeneratorTable';
 import { FormGeneratorForm, type AttributeDefinition } from '../../components/FormGenerator/FormGeneratorForm';
 import { AccessRulesEditor } from '../../components/AccessRules';
 import { FaPlus, FaSync, FaUserShield, FaCube, FaShieldAlt } from 'react-icons/fa';
+import { StackLayout } from '../../components/Layout/StackLayout';
+import { Panel } from '../../components/Layout/Panel';
 import { useToast } from '../../contexts/ToastContext';
 import api from '../../api';
 import { useApiRequest } from '../../hooks/useApi';
@@ -64,6 +66,7 @@ export const AdminFeatureRolesPage: React.FC = () => {
   const [editingRole, setEditingRole] = useState<FeatureRole | null>(null);
   const [isSubmitting, setIsSubmitting] = useState(false);
   const [permissionsRole, setPermissionsRole] = useState<FeatureRole | null>(null);
+  const _lastTableParams = useRef<any>(undefined);
 
   useEffect(() => {
     fetchAttributes(request, 'Role')
@@ -94,12 +97,13 @@ export const AdminFeatureRolesPage: React.FC = () => {
 
   const [pagination, setPagination] = useState<any>(null);
 
-  // Load roles when feature changes
   const fetchRoles = useCallback(async (params?: any) => {
     if (!selectedFeatureCode) {
       setRoles([]);
       return;
     }
+    if (params) _lastTableParams.current = params;
+    else params = _lastTableParams.current;
     
     setLoading(true);
     setError(null);
@@ -284,7 +288,9 @@ export const AdminFeatureRolesPage: React.FC = () => {
 
   if (error && !selectedFeatureCode) {
     return (
-      <div className={`${styles.adminPage} ${styles.adminPageFill}`}>
+      <StackLayout variant="table">
+        <StackLayout.Body>
+          <Panel variant="card" title={t('Fehler')} id="feature-roles-error">
             <div className={styles.errorContainer}>
               <span className={styles.errorIcon}>⚠️</span>
               <p className={styles.errorMessage}>{error}</p>
@@ -292,20 +298,23 @@ export const AdminFeatureRolesPage: React.FC = () => {
                 <FaSync /> {t('Erneut versuchen')}
               </button>
             </div>
-      </div>
+          </Panel>
+        </StackLayout.Body>
+      </StackLayout>
     );
   }
 
   return (
-    <div className={`${styles.adminPage} ${styles.adminPageFill}`}>
+    <>
-      <div className={styles.pageHeader}>
+    <StackLayout variant="table">
+      <StackLayout.Header>
         <div>
           <h1 className={styles.pageTitle}>{t('Feature-Rollen-Rechte')}</h1>
           <p className={styles.pageSubtitle}>{t('Template-Rollen und deren Berechtigungen für')}</p>
         </div>
-      </div>
+      </StackLayout.Header>
-
+      <StackLayout.Body>
-      {/* Feature Selector */}
+        <Panel variant="toolbar" title={t('Filter')} id="feature-roles-toolbar">
           <div className={styles.filterSection}>
             <div className={styles.filterGroup}>
               <label className={styles.filterLabel}>
@@ -347,9 +356,10 @@ export const AdminFeatureRolesPage: React.FC = () => {
               </div>
             )}
           </div>
+        </Panel>
 
-      {/* Info Box */}
         {selectedFeatureCode && (
+          <Panel variant="card" title={t('Feature-Template-Rollen')} id="feature-roles-info">
             <div className={styles.infoBox}>
               <FaUserShield style={{ marginRight: 8 }} />
               <span>
@@ -357,10 +367,11 @@ export const AdminFeatureRolesPage: React.FC = () => {
                 {t('werden bei der Erstellung neuer Feature-Instanzen automatisch kopiert. Änderungen an Template-Rollen wirken sich nicht auf bestehende Instanzen aus.')}
               </span>
             </div>
+          </Panel>
         )}
 
-      {/* Content */}
         {!selectedFeatureCode ? (
+          <Panel variant="card" title={t('Kein Feature ausgewählt')} id="feature-roles-empty">
             <div className={styles.emptyState}>
               <FaCube className={styles.emptyIcon} />
               <h3 className={styles.emptyTitle}>{t('Kein Feature ausgewählt')}</h3>
@@ -368,12 +379,14 @@ export const AdminFeatureRolesPage: React.FC = () => {
                 {t('Wählen Sie ein Feature aus, um dessen Template-Rollen zu verwalten.')}
               </p>
             </div>
+          </Panel>
         ) : (
-        <div className={styles.tableContainer}>
+          <Panel variant="table" title={t('Feature-Rollen')} id="feature-roles-table">
             <FormGeneratorTable
               data={roles}
               columns={columns}
               apiEndpoint="/api/features/templates/roles"
+              filterScopeKey={selectedFeatureCode || 'admin'}
               loading={loading}
             pagination={true}
             pageSize={25}
@@ -408,8 +421,10 @@ export const AdminFeatureRolesPage: React.FC = () => {
             }}
             emptyMessage={t('Keine Feature-Rollen gefunden')}
             />
-        </div>
+          </Panel>
         )}
+      </StackLayout.Body>
+    </StackLayout>
 
       {/* Create Role Modal */}
       {showCreateModal && (
@@ -511,7 +526,7 @@ export const AdminFeatureRolesPage: React.FC = () => {
           </div>
         </div>
       )}
-    </div>
+    </>
   );
 };
 

src/pages/admin/AdminInvitationsPage.tsx

@@ -7,12 +7,14 @@
  * Allows creating, viewing, and revoking invitations.
  */
 
-import React, { useState, useEffect, useMemo } from 'react';
+import React, { useState, useEffect, useMemo, useCallback, useRef } from 'react';
 import { useInvitations, type Invitation, type InvitationCreate } from '../../hooks/useInvitations';
 import { useUserMandates, type Mandate, type Role } from '../../hooks/useUserMandates';
 import { FormGeneratorTable } from '../../components/FormGenerator/FormGeneratorTable';
 import { FormGeneratorForm, type AttributeDefinition } from '../../components/FormGenerator/FormGeneratorForm';
 import { FaPlus, FaSync, FaBuilding, FaCopy, FaLink } from 'react-icons/fa';
+import { StackLayout } from '../../components/Layout/StackLayout';
+import { Panel } from '../../components/Layout/Panel';
 import { useToast } from '../../contexts/ToastContext';
 import { useApiRequest } from '../../hooks/useApi';
 import { fetchAttributes } from '../../api/attributesApi';
@@ -51,6 +53,7 @@ export const AdminInvitationsPage: React.FC = () => {
   const [_isSubmitting, setIsSubmitting] = useState(false); // Prefixed with _ to suppress warning
   const [copySuccess, setCopySuccess] = useState(false);
   const [backendAttributes, setBackendAttributes] = useState<AttributeDefinition[]>([]);
+  const _lastTableParams = useRef<any>(undefined);
 
   // Load mandates and attributes on mount
   useEffect(() => {
@@ -67,13 +70,24 @@ export const AdminInvitationsPage: React.FC = () => {
       .catch(() => setBackendAttributes([]));
   }, [fetchMandates, request]);
 
-  // Load invitations and roles when mandate changes (same roles as AdminUserMandatesPage: user, viewer, admin)
+  const _refetchInvitations = useCallback(async (paginationParams?: any) => {
+    if (!selectedMandateId) return;
+    if (paginationParams && typeof paginationParams === 'object' && !Array.isArray(paginationParams) && typeof paginationParams !== 'string') {
+      _lastTableParams.current = paginationParams;
+    } else {
+      paginationParams = _lastTableParams.current;
+    }
+    if (paginationParams) return fetchInvitations(paginationParams, { includeExpired: showExpired, includeUsed: showUsed });
+    return fetchInvitations(selectedMandateId, { includeExpired: showExpired, includeUsed: showUsed });
+  }, [selectedMandateId, showExpired, showUsed, fetchInvitations]);
+
   useEffect(() => {
     if (selectedMandateId) {
-      fetchInvitations(selectedMandateId, { includeExpired: showExpired, includeUsed: showUsed });
+      _lastTableParams.current = undefined;
+      _refetchInvitations();
       fetchRoles(selectedMandateId).then(setRoles);
     }
-  }, [selectedMandateId, showExpired, showUsed, fetchInvitations, fetchRoles]);
+  }, [selectedMandateId, showExpired, showUsed, _refetchInvitations, fetchRoles]);
 
   // Format timestamp (used by URL modal only).
   const formatDate = (timestamp: number) => {
@@ -163,7 +177,7 @@ export const AdminInvitationsPage: React.FC = () => {
       if (result.success && result.data) {
         setShowCreateModal(false);
         setShowUrlModal(result.data);
-        fetchInvitations(selectedMandateId, { includeExpired: showExpired, includeUsed: showUsed });
+        _refetchInvitations();
       } else {
         showError(t('Fehler'), result.error || t('Fehler beim Erstellen der Einladung'));
       }
@@ -202,7 +216,9 @@ export const AdminInvitationsPage: React.FC = () => {
 
   if (error && !selectedMandateId) {
     return (
-      <div className={`${styles.adminPage} ${styles.adminPageFill}`}>
+      <StackLayout variant="table">
+        <StackLayout.Body>
+          <Panel variant="card" title={t('Fehler')} id="invitations-error">
             <div className={styles.errorContainer}>
               <span className={styles.errorIcon}>⚠️</span>
               <p className={styles.errorMessage}>
@@ -212,20 +228,23 @@ export const AdminInvitationsPage: React.FC = () => {
                 <FaSync /> {t('Erneut versuchen')}
               </button>
             </div>
-      </div>
+          </Panel>
+        </StackLayout.Body>
+      </StackLayout>
     );
   }
 
   return (
-    <div className={`${styles.adminPage} ${styles.adminPageFill}`}>
+    <>
-      <div className={styles.pageHeader}>
+    <StackLayout variant="table">
+      <StackLayout.Header>
         <div>
           <h1 className={styles.pageTitle}>{t('Einladungen')}</h1>
           <p className={styles.pageSubtitle}>{t('Erstellen und verwalten Sie Einladungen')}</p>
         </div>
-      </div>
+      </StackLayout.Header>
-
+      <StackLayout.Body>
-      {/* Mandate Selector and Filters */}
+        <Panel variant="toolbar" title={t('Filter')} id="invitations-toolbar">
           <div className={styles.filterSection}>
             <div className={styles.filterGroup}>
               <label className={styles.filterLabel}>
@@ -269,7 +288,7 @@ export const AdminInvitationsPage: React.FC = () => {
               <div className={styles.headerActions}>
                 <button
                   className={styles.secondaryButton}
-              onClick={() => fetchInvitations(selectedMandateId, { includeExpired: showExpired, includeUsed: showUsed })}
+                  onClick={() => _refetchInvitations()}
                   disabled={loading}
                 >
                   <FaSync className={loading ? 'spinning' : ''} /> {t('Aktualisieren')}
@@ -283,9 +302,10 @@ export const AdminInvitationsPage: React.FC = () => {
               </div>
             )}
           </div>
+        </Panel>
 
-      {/* Content */}
         {!selectedMandateId ? (
+          <Panel variant="card" title={t('Kein Mandant ausgewählt')} id="invitations-no-mandate">
             <div className={styles.emptyState}>
               <FaBuilding className={styles.emptyIcon} />
               <h3 className={styles.emptyTitle}>{t('Kein Mandant ausgewählt')}</h3>
@@ -293,12 +313,14 @@ export const AdminInvitationsPage: React.FC = () => {
                 {t('Wählen Sie einen Mandanten aus, um dessen Einladungen zu verwalten.')}
               </p>
             </div>
+          </Panel>
         ) : (
-        <div className={styles.tableContainer}>
+          <Panel variant="table" title={t('Einladungen')} id="invitations-table">
             <FormGeneratorTable
               data={invitations}
               columns={columns}
               apiEndpoint="/api/invitations/"
+              filterScopeKey={selectedMandateId || 'admin'}
               loading={loading}
             pagination={true}
             pageSize={25}
@@ -322,13 +344,15 @@ export const AdminInvitationsPage: React.FC = () => {
             ]}
             hookData={{
               handleDelete: handleDeleteInvitation,
-              refetch: (params?: any) => fetchInvitations(params || selectedMandateId, { includeExpired: showExpired, includeUsed: showUsed }),
+              refetch: _refetchInvitations,
               pagination,
             }}
             emptyMessage={t('Keine Einladungen gefunden')}
             />
-        </div>
+          </Panel>
         )}
+      </StackLayout.Body>
+    </StackLayout>
 
       {/* Create Invitation Modal */}
       {showCreateModal && (
@@ -429,7 +453,7 @@ export const AdminInvitationsPage: React.FC = () => {
           </div>
         </div>
       )}
-    </div>
+    </>
   );
 };
 

src/pages/admin/AdminLanguagesPage.tsx

@@ -16,6 +16,8 @@ import type { AttributeDefinition } from '../../api/attributesApi';
 import { resolveColumnTypes } from '../../utils/columnTypeResolver';
 import { useLanguage } from '../../providers/language/LanguageContext';
 import styles from './Admin.module.css';
+import { StackLayout } from '../../components/Layout/StackLayout';
+import { Panel } from '../../components/Layout/Panel';
 
 type LangRow = {
   id: string;
@@ -869,8 +871,9 @@ export const AdminLanguagesPage: React.FC = () => {
   const isBusy = progress !== null;
 
   return (
-    <div className={`${styles.adminPage} ${styles.adminPageFill}`} style={{ gap: '1rem', position: 'relative' }}>
+    <StackLayout variant="table">
-      <header>
+      <StackLayout.Header>
+        <div>
           <h1 className={styles.pageTitle}>{t('UI-Sprachen')}</h1>
           <p className={styles.pageSubtitle}>{t('Globale Sprachsets verwalten (SysAdmin).')}</p>
           {error && !progress && (
@@ -878,8 +881,10 @@ export const AdminLanguagesPage: React.FC = () => {
               {error}
             </p>
           )}
-      </header>
+        </div>
-
+      </StackLayout.Header>
+      <StackLayout.Body>
+        <Panel variant="toolbar" title={t('Aktionen')} id="languages-toolbar">
           <div style={{ display: 'flex', flexWrap: 'wrap', gap: '0.75rem', alignItems: 'center' }}>
             <button type="button" className={styles.secondaryButton} onClick={_load} disabled={isBusy || loading} title={t('Daten neu laden')}>
               <FaSync style={loading ? { animation: 'spin 1s linear infinite' } : undefined} />
@@ -918,11 +923,13 @@ export const AdminLanguagesPage: React.FC = () => {
               {t('Hinzufügen')}
             </button>
           </div>
+        </Panel>
 
-      <div style={{ flex: 1, minHeight: 0, position: 'relative' }}>
+        <Panel variant="table" title={t('Sprachen')} id="languages-table" className="" style={{ position: 'relative' }}>
           <FormGeneratorTable
             data={displayRows}
             columns={columns}
+            filterScopeKey="admin"
             loading={loading}
           pagination={false}
           selectable={false}
@@ -961,10 +968,10 @@ export const AdminLanguagesPage: React.FC = () => {
         />
 
           {progress && <_ProgressOverlay progress={progress} onAbort={_abortRunning} />}
-      </div>
+        </Panel>
-
+      </StackLayout.Body>
       <ConfirmDialog />
-    </div>
+    </StackLayout>
   );
 };
 

src/pages/admin/AdminLogsPage.tsx

@@ -10,6 +10,8 @@
 
 import React, { useState, useEffect, useCallback, useRef } from 'react';
 import { FaSync, FaDownload } from 'react-icons/fa';
+import { StackLayout } from '../../components/Layout/StackLayout';
+import { Panel } from '../../components/Layout/Panel';
 import api from '../../api';
 import styles from './Admin.module.css';
 import logStyles from './AdminLogsPage.module.css';
@@ -107,8 +109,8 @@ export const AdminLogsPage: React.FC = () => {
   };
 
   return (
-    <div className={styles.adminPage}>
+    <StackLayout variant="scroll">
-      <div className={styles.pageHeader}>
+      <StackLayout.Header>
         <div>
           <h1 className={styles.pageTitle}>{t('Gateway-Logs')}</h1>
           <p className={styles.pageSubtitle}>
@@ -126,8 +128,9 @@ export const AdminLogsPage: React.FC = () => {
             <FaDownload /> {t('Download')}
           </button>
         </div>
-      </div>
+      </StackLayout.Header>
-
+      <StackLayout.Body>
+        <Panel variant="toolbar" title={t('Filter')} id="logs-toolbar">
           <div className={logStyles.controls}>
             <div className={logStyles.loadGroup}>
               <label className={logStyles.controlLabel}>{t('Letzte')}</label>
@@ -161,8 +164,10 @@ export const AdminLogsPage: React.FC = () => {
               </label>
             </div>
           </div>
+        </Panel>
 
         {error && (
+          <Panel variant="card" title={t('Fehler')} id="logs-error">
             <div
               className={styles.infoBox}
               style={{
@@ -173,8 +178,10 @@ export const AdminLogsPage: React.FC = () => {
               <span style={{ marginRight: 8, color: 'var(--warning-color, #d69e2e)' }}>!</span>
               {error}
             </div>
+          </Panel>
         )}
 
+        <Panel variant="editor" title={t('Logs')} id="logs-editor">
           <div
             ref={logContainerRef}
             className={logStyles.logContainer}
@@ -207,7 +214,9 @@ export const AdminLogsPage: React.FC = () => {
               );
             })}
           </div>
-    </div>
+        </Panel>
+      </StackLayout.Body>
+    </StackLayout>
   );
 };
 

src/pages/admin/AdminMandateRolePermissionsPage.tsx

@@ -35,6 +35,8 @@ import {
   FaExclamationTriangle,
   FaCheckCircle
 } from 'react-icons/fa';
+import { StackLayout } from '../../components/Layout/StackLayout';
+import { Panel } from '../../components/Layout/Panel';
 import styles from './Admin.module.css';
 
 import { useLanguage } from '../../providers/language/LanguageContext';
@@ -225,7 +227,9 @@ export const AdminMandateRolePermissionsPage: React.FC = () => {
 
   if (error) {
     return (
-      <div className={styles.adminPage}>
+      <StackLayout variant="scroll">
+        <StackLayout.Body>
+          <Panel variant="card" title={t('Fehler beim Laden')} id="role-permissions-error">
             <div className={styles.errorContainer}>
               <span className={styles.errorIcon}>⚠️</span>
               <p className={styles.errorMessage}>
@@ -235,14 +239,16 @@ export const AdminMandateRolePermissionsPage: React.FC = () => {
                 <FaSync /> {t('Erneut versuchen')}
               </button>
             </div>
-      </div>
+          </Panel>
+        </StackLayout.Body>
+      </StackLayout>
     );
   }
 
   return (
-    <div className={styles.adminPage}>
+    <>
-      {/* Header */}
+    <StackLayout variant="scroll">
-      <div className={styles.pageHeader}>
+      <StackLayout.Header>
         <div>
           <h1 className={styles.pageTitle}>
             <FaShieldAlt style={{ marginRight: '0.5rem' }} />
@@ -269,9 +275,9 @@ export const AdminMandateRolePermissionsPage: React.FC = () => {
             <FaSync className={loading ? 'spinning' : ''} /> {t('Aktualisieren')}
           </button>
         </div>
-      </div>
+      </StackLayout.Header>
-
+      <StackLayout.Body>
-      {/* Filters */}
+        <Panel variant="toolbar" title={t('Filter')} id="role-permissions-toolbar">
         <div className={styles.filterBar}>
           <div className={styles.filterGroup}>
             <label className={styles.filterLabel}>{t('Mandant')}</label>
@@ -303,8 +309,9 @@ export const AdminMandateRolePermissionsPage: React.FC = () => {
             </select>
           </div>
         </div>
+        </Panel>
 
-        {/* Info Box */}
+        <Panel variant="card" title={t('Hinweis')} id="role-permissions-info">
         <div className={styles.infoBox}>
           <FaShieldAlt style={{ marginRight: '0.5rem' }} />
           <span>
@@ -314,17 +321,19 @@ export const AdminMandateRolePermissionsPage: React.FC = () => {
             <strong>{t('Mandanten-Rollen')}</strong> {t('sind direkt bearbeitbar.')}
           </span>
         </div>
+        </Panel>
 
-      {/* Loading State */}
       {loading && (
+        <Panel variant="card" title={t('Lade Rollen')} id="role-permissions-loading">
         <div className={styles.loadingContainer}>
           <div className={styles.spinner} />
           <span>{t('Lade Rollen')}</span>
         </div>
+        </Panel>
       )}
 
-      {/* Empty State */}
       {!loading && roles.length === 0 && (
+        <Panel variant="card" title={t('Keine Rollen gefunden')} id="role-permissions-empty">
         <div className={styles.emptyState}>
           <FaUserShield className={styles.emptyIcon} />
           <p>{t('Keine Rollen gefunden')}</p>
@@ -336,10 +345,11 @@ export const AdminMandateRolePermissionsPage: React.FC = () => {
               : t('Es gibt noch keine Rollen')}
           </p>
         </div>
+        </Panel>
       )}
 
-      {/* Roles List */}
       {!loading && roles.length > 0 && (
+        <Panel variant="card" title={t('Rollen')} id="role-permissions-list">
         <div className={styles.rolesList}>
           {roles.map(role => (
             <div key={role.id} className={styles.roleCard}>
@@ -387,7 +397,10 @@ export const AdminMandateRolePermissionsPage: React.FC = () => {
             </div>
           ))}
         </div>
+        </Panel>
       )}
+      </StackLayout.Body>
+    </StackLayout>
 
       {/* Cleanup Duplicates Modal */}
       {showCleanupModal && (
@@ -598,7 +611,7 @@ export const AdminMandateRolePermissionsPage: React.FC = () => {
           </div>
         </div>
       )}
-    </div>
+    </>
   );
 };