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/provider/ISignalPipelineProvider.ts

@@ -0,0 +1,8 @@
+import type { PipelineState, AuditTrailEntry, GateType } from '../domain/signalPipeline'
+
+export interface ISignalPipelineProvider {
+  getPipelineState(signalId: string): Promise<PipelineState | null>
+  evaluateGate(signalId: string, gateType: GateType): Promise<PipelineState>
+  getAuditTrail(signalId: string): Promise<AuditTrailEntry[]>
+  publishToFutureAvailability(signalId: string): Promise<PipelineState>
+}