feat: remove Administration workspace — keep only Verwaltung + Suche

- Delete all ops page components (ReviewQueue, AIMonitoring, Governance,
  SourceMonitoring, ActivityTimeline, SignalPipeline)
- Remove OPERATIONS workspace from AppShell config, nav order, path detection
- Remove all /ops/* routes from App.tsx
- Remove WorkspaceType.OPERATIONS from allowedWorkspaces in authService,
  sessionStore, permissions
- Keep MarketIntelligence page (already moved to /supply/market-intelligence)

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

.claude/worktrees/agent-a82a3716/src/components/ui/index.ts

@@ -0,0 +1,14 @@
+export { AppErrorBoundary } from './AppErrorBoundary'
+export { LoadingPage } from './LoadingPage'
+export { EmptyState } from './EmptyState'
+export { ErrorState } from './ErrorState'
+export { PageContainer } from './PageContainer'
+export { SectionContainer } from './SectionContainer'
+export { CardSkeleton } from './CardSkeleton'
+export { PanelLoadingState } from './PanelLoadingState'
+export { UnauthorizedState } from './UnauthorizedState'
+export { RestrictedState } from './RestrictedState'
+export { ToastProvider } from './ToastProvider'
+export { ConfirmDialog } from './ConfirmDialog'
+export { DecisionContextPanel } from './DecisionContextPanel'
+export type { DecisionMetric, DecisionAction } from './DecisionContextPanel'