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/demand/ConfidenceFieldBadge.tsx

@@ -0,0 +1,22 @@
+import { Chip } from '@mui/material'
+
+interface Props {
+  confidence: number
+  size?: 'small' | 'medium'
+}
+
+function confidenceColor(c: number): string {
+  if (c >= 0.8) return '#1a7a4a'
+  if (c >= 0.6) return '#d97706'
+  return '#c0392b'
+}
+
+export function ConfidenceFieldBadge({ confidence, size = 'small' }: Props) {
+  return (
+    <Chip
+      label={`${Math.round(confidence * 100)}%`}
+      size={size}
+      sx={{ bgcolor: confidenceColor(confidence), color: 'white', fontWeight: 700, fontSize: 11 }}
+    />
+  )
+}