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>

src/lib/permissions.ts

@@ -67,10 +67,6 @@ const WORKSPACE_ROLES: Record<WorkspaceType, UserRole[]> = {
     UserRole.PROPERTY_MANAGER,
     UserRole.DEMAND_USER,
   ],
-  [WorkspaceType.OPERATIONS]: [
-    UserRole.SUPER_ADMIN,
-    UserRole.REVIEWER,
-  ],
 }
 
 // ── Core Functions ────────────────────────────────────────────────────────────