feat: F001 app shell & global layout system

Add PageHeader, UserMenu, NotificationButton, OrganizationContextBadge,
RightContextPanel, CompareTray, and ActivityTimeline; wire all into AppShell.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/App.tsx

@@ -17,6 +17,7 @@ const Shortlists = lazy(() => import('./pages/demand/Shortlists'))
 const ReviewQueue = lazy(() => import('./pages/ops/ReviewQueue'))
 const AIMonitoring = lazy(() => import('./pages/ops/AIMonitoring'))
 const Governance = lazy(() => import('./pages/ops/Governance'))
+const ActivityTimeline = lazy(() => import('./pages/ops/ActivityTimeline'))
 
 function App() {
   return (
@@ -43,6 +44,7 @@ function App() {
             <Route path="/ops/review-queue" element={<ReviewQueue />} />
             <Route path="/ops/ai-monitoring" element={<AIMonitoring />} />
             <Route path="/ops/governance" element={<Governance />} />
+            <Route path="/ops/activity-timeline" element={<ActivityTimeline />} />
           </Route>
 
           <Route path="*" element={<Navigate to="/" replace />} />

src/components/layout/AppShell.tsx

@@ -28,9 +28,14 @@ import {
   ChevronLeft,
   ChevronRight,
   Sparkles,
-  Bell,
+  Clock,
 } from 'lucide-react'
 import type { LucideIcon } from 'lucide-react'
+import { OrganizationContextBadge } from './OrganizationContextBadge'
+import { UserMenu } from './UserMenu'
+import { NotificationButton } from './NotificationButton'
+import { RightContextPanel } from './RightContextPanel'
+import { CompareTray } from './CompareTray'
 
 // ---------------------------------------------------------------------------
 // Types
@@ -93,6 +98,7 @@ const WORKSPACE_CONFIG: Record<WorkspaceType, WorkspaceConfig> = {
       { path: '/ops/review-queue', label: 'Review Queue', icon: ClipboardList },
       { path: '/ops/ai-monitoring', label: 'AI Monitoring', icon: Activity },
       { path: '/ops/governance', label: 'Governance', icon: Shield },
+      { path: '/ops/activity-timeline', label: 'Aktivitäts-Timeline', icon: Clock },
     ],
   },
 }
@@ -458,6 +464,7 @@ function TopBar({ activeWorkspace, pathname }: TopBarProps) {
 
       {/* Right side */}
       <Box sx={{ display: 'flex', alignItems: 'center', gap: 1 }}>
+        <OrganizationContextBadge />
         <Button
           variant="outlined"
           size="small"
@@ -466,12 +473,8 @@ function TopBar({ activeWorkspace, pathname }: TopBarProps) {
         >
           AI Assistent
         </Button>
-        <IconButton size="small" sx={{ color: '#64748b' }}>
+        <NotificationButton />
-          <Bell size={20} />
+        <UserMenu />
-        </IconButton>
-        <Avatar sx={{ width: 32, height: 32, fontSize: '0.75rem', bgcolor: '#1e3a5f' }}>
-          AU
-        </Avatar>
       </Box>
     </Box>
   )
@@ -521,7 +524,11 @@ export function AppShell() {
         <Box component="main" sx={{ flex: 1, overflowY: 'auto' }}>
           <Outlet />
         </Box>
+
+        <RightContextPanel />
       </Box>
+
+      <CompareTray />
     </Box>
   )
 }

src/components/layout/CompareTray.tsx

@@ -0,0 +1,73 @@
+import { useEffect } from 'react'
+import { useNavigate } from 'react-router'
+import { Box, Button, Chip, Typography } from '@mui/material'
+import { useCompareStore } from '../../stores/compareStore'
+import { useLayoutStore } from '../../stores/layoutStore'
+
+export function CompareTray() {
+  const { compareTray, removeFromCompare, clearCompare } = useCompareStore()
+  const { setCompareTrayVisible } = useLayoutStore()
+  const navigate = useNavigate()
+
+  useEffect(() => {
+    setCompareTrayVisible(compareTray.length > 0)
+  }, [compareTray.length, setCompareTrayVisible])
+
+  return (
+    <Box
+      sx={{
+        position: 'fixed',
+        bottom: 0,
+        left: 0,
+        right: 0,
+        zIndex: 1300,
+        height: 56,
+        bgcolor: '#0f1923',
+        display: 'flex',
+        alignItems: 'center',
+        px: 3,
+        gap: 2,
+        transform: compareTray.length > 0 ? 'translateY(0)' : 'translateY(100%)',
+        transition: 'transform 0.25s ease',
+      }}
+    >
+      <Typography variant="caption" sx={{ color: '#fff', flexShrink: 0 }}>
+        Vergleich ({compareTray.length}/3)
+      </Typography>
+
+      <Box sx={{ flex: 1, display: 'flex', gap: 1, overflow: 'hidden' }}>
+        {compareTray.map((id, i) => (
+          <Chip
+            key={id}
+            label={`Objekt ${i + 1}`}
+            size="small"
+            onDelete={() => removeFromCompare(id)}
+            sx={{
+              bgcolor: 'rgba(255,255,255,0.15)',
+              color: '#fff',
+              '& .MuiChip-deleteIcon': { color: 'rgba(255,255,255,0.6)' },
+            }}
+          />
+        ))}
+      </Box>
+
+      <Button
+        variant="text"
+        size="small"
+        onClick={clearCompare}
+        sx={{ color: 'rgba(255,255,255,0.5)', textTransform: 'none', flexShrink: 0 }}
+      >
+        Alle entfernen
+      </Button>
+
+      <Button
+        variant="contained"
+        size="small"
+        onClick={() => navigate('/demand/compare')}
+        sx={{ bgcolor: '#1e3a5f', textTransform: 'none', flexShrink: 0, '&:hover': { bgcolor: '#162d4a' } }}
+      >
+        Vergleich starten
+      </Button>
+    </Box>
+  )
+}

src/components/layout/NotificationButton.tsx

@@ -0,0 +1,39 @@
+import { useState } from 'react'
+import { Badge, IconButton, Popover, Typography } from '@mui/material'
+import { Bell } from 'lucide-react'
+
+export function NotificationButton() {
+  const [anchorEl, setAnchorEl] = useState<null | HTMLElement>(null)
+
+  function handleOpen(e: React.MouseEvent<HTMLElement>) {
+    setAnchorEl(e.currentTarget)
+  }
+
+  function handleClose() {
+    setAnchorEl(null)
+  }
+
+  return (
+    <>
+      <IconButton size="small" sx={{ color: '#64748b' }} onClick={handleOpen}>
+        <Badge badgeContent={0} color="error">
+          <Bell size={20} />
+        </Badge>
+      </IconButton>
+
+      <Popover
+        open={!!anchorEl}
+        anchorEl={anchorEl}
+        onClose={handleClose}
+        anchorOrigin={{ vertical: 'bottom', horizontal: 'right' }}
+        transformOrigin={{ vertical: 'top', horizontal: 'right' }}
+        slotProps={{ paper: { sx: { width: 280, p: 2 } } }}
+      >
+        <Typography variant="subtitle2" sx={{ mb: 1 }}>Benachrichtigungen</Typography>
+        <Typography variant="caption" sx={{ color: 'text.secondary' }}>
+          Keine neuen Benachrichtigungen
+        </Typography>
+      </Popover>
+    </>
+  )
+}

src/components/layout/OrganizationContextBadge.tsx

@@ -0,0 +1,19 @@
+import { Chip } from '@mui/material'
+import { Building2 } from 'lucide-react'
+import { useSessionStore } from '../../stores/sessionStore'
+
+export function OrganizationContextBadge() {
+  const { currentUser } = useSessionStore()
+
+  if (!currentUser?.organizationName) return null
+
+  return (
+    <Chip
+      size="small"
+      variant="outlined"
+      icon={<Building2 size={12} color="#64748b" />}
+      label={currentUser.organizationName}
+      sx={{ fontSize: '0.7rem', height: 22, color: '#64748b', borderColor: '#e2e8f0' }}
+    />
+  )
+}

src/components/layout/PageHeader.tsx

@@ -0,0 +1,76 @@
+import { Box, Breadcrumbs, Typography } from '@mui/material'
+import type { SxProps, Theme } from '@mui/material'
+import type { ReactNode } from 'react'
+import { NavLink } from 'react-router'
+
+interface BreadcrumbItem {
+  label: string
+  href?: string
+}
+
+interface PageHeaderProps {
+  title: string
+  subtitle?: string
+  breadcrumbs?: BreadcrumbItem[]
+  primaryAction?: ReactNode
+  secondaryActions?: ReactNode
+  badge?: ReactNode
+  sx?: SxProps<Theme>
+}
+
+export function PageHeader({
+  title,
+  subtitle,
+  breadcrumbs,
+  primaryAction,
+  secondaryActions,
+  badge,
+  sx,
+}: PageHeaderProps) {
+  return (
+    <Box sx={{ px: 3, py: 2.5, borderBottom: '1px solid #e2e8f0', ...sx }}>
+      {breadcrumbs && breadcrumbs.length > 0 && (
+        <Breadcrumbs separator="/" sx={{ mb: 1 }}>
+          {breadcrumbs.map((crumb) =>
+            crumb.href ? (
+              <NavLink
+                key={crumb.label}
+                to={crumb.href}
+                style={{ textDecoration: 'none', color: '#64748b', fontSize: '0.75rem' }}
+              >
+                {crumb.label}
+              </NavLink>
+            ) : (
+              <Typography key={crumb.label} sx={{ fontSize: '0.75rem', color: 'text.secondary' }}>
+                {crumb.label}
+              </Typography>
+            ),
+          )}
+        </Breadcrumbs>
+      )}
+
+      <Box sx={{ display: 'flex', justifyContent: 'space-between', alignItems: 'flex-start' }}>
+        <Box>
+          <Box sx={{ display: 'flex', alignItems: 'center', gap: 1 }}>
+            <Typography variant="h6" sx={{ fontWeight: 600, lineHeight: 1.3 }}>
+              {title}
+            </Typography>
+            {badge}
+          </Box>
+          {subtitle && (
+            <Typography variant="body2" sx={{ color: 'text.secondary', mt: 0.25 }}>
+              {subtitle}
+            </Typography>
+          )}
+        </Box>
+
+        {(primaryAction ?? secondaryActions) && (
+          <Box sx={{ display: 'flex', alignItems: 'center', gap: 1, flexShrink: 0, ml: 2 }}>
+            {secondaryActions}
+            {primaryAction}
+          </Box>
+        )}
+      </Box>
+    </Box>
+  )
+}

src/components/layout/RightContextPanel.tsx

@@ -0,0 +1,70 @@
+import { Box, Divider, IconButton, Typography } from '@mui/material'
+import { X } from 'lucide-react'
+import { useLayoutStore } from '../../stores/layoutStore'
+import type { RightPanelContentType } from '../../stores/layoutStore'
+
+const PANEL_TITLES: Record<RightPanelContentType, string> = {
+  ai_context: 'KI Kontext',
+  detail_preview: 'Detail Vorschau',
+  compare_preview: 'Vergleich Vorschau',
+  activity_feed: 'Aktivitäts-Feed',
+}
+
+const PANEL_PLACEHOLDERS: Record<RightPanelContentType, string> = {
+  ai_context: 'KI-Kontext wird geladen...',
+  detail_preview: 'Kein Objekt ausgewählt.',
+  compare_preview: 'Vergleichsvorschau nicht verfügbar.',
+  activity_feed: 'Keine Aktivitäten vorhanden.',
+}
+
+export function RightContextPanel() {
+  const { isRightPanelOpen, rightPanelContentType, closeRightPanel } = useLayoutStore()
+
+  const title = rightPanelContentType ? PANEL_TITLES[rightPanelContentType] : ''
+  const placeholder = rightPanelContentType ? PANEL_PLACEHOLDERS[rightPanelContentType] : ''
+
+  return (
+    <Box
+      sx={{
+        position: 'fixed',
+        right: 0,
+        top: 56,
+        height: 'calc(100vh - 56px)',
+        width: 320,
+        transform: isRightPanelOpen ? 'translateX(0)' : 'translateX(320px)',
+        transition: 'transform 0.25s ease',
+        bgcolor: '#fff',
+        borderLeft: '1px solid #e2e8f0',
+        boxShadow: '-4px 0 16px rgba(0,0,0,0.08)',
+        zIndex: 1200,
+        display: 'flex',
+        flexDirection: 'column',
+        overflow: 'hidden',
+      }}
+    >
+      <Box
+        sx={{
+          height: 48,
+          display: 'flex',
+          alignItems: 'center',
+          justifyContent: 'space-between',
+          px: 2,
+          flexShrink: 0,
+        }}
+      >
+        <Typography variant="subtitle2" sx={{ fontWeight: 600 }}>{title}</Typography>
+        <IconButton size="small" onClick={closeRightPanel} sx={{ color: '#64748b' }}>
+          <X size={16} />
+        </IconButton>
+      </Box>
+
+      <Divider />
+
+      <Box sx={{ flex: 1, overflowY: 'auto', p: 2 }}>
+        <Typography variant="body2" sx={{ color: 'text.secondary' }}>
+          {placeholder}
+        </Typography>
+      </Box>
+    </Box>
+  )
+}

src/components/layout/UserMenu.tsx

@@ -0,0 +1,74 @@
+import { useState } from 'react'
+import { useNavigate } from 'react-router'
+import { Avatar, Divider, IconButton, ListItemIcon, Menu, MenuItem, Typography } from '@mui/material'
+import { LogOut, Settings, User } from 'lucide-react'
+import { useSessionStore } from '../../stores/sessionStore'
+
+function getUserInitials(name: string): string {
+  return name
+    .split(' ')
+    .map((n) => n[0])
+    .join('')
+    .toUpperCase()
+    .slice(0, 2)
+}
+
+export function UserMenu() {
+  const [anchorEl, setAnchorEl] = useState<null | HTMLElement>(null)
+  const { currentUser, logout } = useSessionStore()
+  const navigate = useNavigate()
+
+  function handleOpen(e: React.MouseEvent<HTMLElement>) {
+    setAnchorEl(e.currentTarget)
+  }
+
+  function handleClose() {
+    setAnchorEl(null)
+  }
+
+  function handleLogout() {
+    handleClose()
+    logout()
+    navigate('/')
+  }
+
+  const initials = getUserInitials(currentUser?.name ?? 'U')
+
+  return (
+    <>
+      <IconButton onClick={handleOpen} size="small" sx={{ p: 0 }}>
+        <Avatar sx={{ width: 32, height: 32, fontSize: '0.75rem', bgcolor: '#1e3a5f' }}>
+          {initials}
+        </Avatar>
+      </IconButton>
+
+      <Menu
+        anchorEl={anchorEl}
+        open={!!anchorEl}
+        onClose={handleClose}
+        slotProps={{ paper: { sx: { width: 200, mt: 1 } } }}
+        transformOrigin={{ horizontal: 'right', vertical: 'top' }}
+        anchorOrigin={{ horizontal: 'right', vertical: 'bottom' }}
+      >
+        {currentUser && (
+          <MenuItem disabled sx={{ opacity: '1 !important' }}>
+            <Typography variant="body2" sx={{ fontWeight: 600 }}>{currentUser.name}</Typography>
+          </MenuItem>
+        )}
+        <MenuItem onClick={handleClose}>
+          <ListItemIcon><User size={16} /></ListItemIcon>
+          Profil
+        </MenuItem>
+        <MenuItem onClick={handleClose}>
+          <ListItemIcon><Settings size={16} /></ListItemIcon>
+          Einstellungen
+        </MenuItem>
+        <Divider />
+        <MenuItem onClick={handleLogout}>
+          <ListItemIcon><LogOut size={16} /></ListItemIcon>
+          Abmelden
+        </MenuItem>
+      </Menu>
+    </>
+  )
+}

src/components/layout/index.ts

@@ -1 +1,7 @@
 export { AppShell } from './AppShell'
+export { PageHeader } from './PageHeader'
+export { RightContextPanel } from './RightContextPanel'
+export { CompareTray } from './CompareTray'
+export { UserMenu } from './UserMenu'
+export { NotificationButton } from './NotificationButton'
+export { OrganizationContextBadge } from './OrganizationContextBadge'

src/pages/ops/ActivityTimeline.tsx

@@ -0,0 +1,16 @@
+import { Box, Typography } from '@mui/material'
+import { PageHeader } from '../../components/layout'
+
+export default function ActivityTimeline() {
+  return (
+    <Box sx={{ p: 3 }}>
+      <PageHeader
+        title="Aktivitäts-Timeline"
+        subtitle="Verlauf aller System- und Benutzeraktionen"
+      />
+      <Typography color="text.secondary" sx={{ mt: 3 }}>
+        Timeline wird implementiert...
+      </Typography>
+    </Box>
+  )
+}