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/services/authService.ts

@@ -21,7 +21,7 @@ const DEMO_USERS: Record<UserRole, MockUser> = {
     role: UserRole.SUPER_ADMIN,
     organizationId: 'org-wincasa',
     organizationName: 'Wincasa AG',
-    allowedWorkspaces: [WorkspaceType.SUPPLY, WorkspaceType.DEMAND, WorkspaceType.OPERATIONS],
+    allowedWorkspaces: [WorkspaceType.SUPPLY, WorkspaceType.DEMAND],
   },
   [UserRole.ORGANIZATION_ADMIN]: {
     id: 'user-001',
@@ -91,7 +91,7 @@ export const authService = {
       role: UserRole.ORGANIZATION_ADMIN,
       organizationId: 'org-wincasa',
       organizationName: 'Wincasa AG',
-      allowedWorkspaces: [WorkspaceType.SUPPLY, WorkspaceType.DEMAND, WorkspaceType.OPERATIONS],
+      allowedWorkspaces: [WorkspaceType.SUPPLY, WorkspaceType.DEMAND],
     }
     useSessionStore.getState().login(user)
     return { data: user }