feat: Verwaltungszugang refactor — lease data, 3-tab detail, market signals

- Dashboard: remove QuickActionPanel, StrongMatchOverview, FutureSignalWidget,
  DataQualityWidget, header buttons, Marktchancen nav; KpiGrid → 4 cards
- Property domain: 9 new fields (leaseTerm, leaseStartDate/End, breakoutOption,
  currentTenant, importedFrom, importedAt, lastUpdatedAt)
- Mock data: annual CHF/m²/Jahr prices (×12), Swiss images, tenant/lease data
  for all 10 VERIFIED_PORTFOLIO properties; need budgets updated to annual
- PropertyTable: swap columns — add Aktueller Mieter, Mietlaufzeit,
  Breakoutoption, Breakoutoption Zeitpunkt; remove Verfügbarkeit, Konfidenz, Quelle
- PropertyDetailView: 3 tabs (Übersicht, Matchability, Marktsignale) with
  inline edit mode, NeedMatchCard list, PropertyMarketSignalsTab
- New: marketReport domain + mock data + service, NeedMatchCard,
  PropertyMarketSignalsTab with 4 sections + PDF button
- matchService: getNeedMatchesForProperty(propertyId, {minScore})

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

src/components/layout/AppShell.tsx

@@ -20,7 +20,6 @@ import {
   LayoutDashboard,
   Building2,
   Target,
-  TrendingUp,
   CheckSquare,
   Search,
   List,
@@ -84,7 +83,6 @@ const WORKSPACE_CONFIG: Record<WorkspaceType, WorkspaceConfig> = {
       { path: '/supply/dashboard', label: 'Übersicht', icon: LayoutDashboard },
       { path: '/supply/properties', label: 'Meine Objekte', icon: Building2 },
       { path: '/supply/anfragen', label: 'Anfragencenter', icon: MessageSquare },
-      { path: '/supply/future-availability', label: 'Marktchancen', icon: TrendingUp },
       { path: '/supply/data-quality', label: 'Datenpflege', icon: CheckSquare },
     ],
   },