feat: role-aware UX, market intelligence, score fix & layout scroll

- Role-based workspace access: Property Manager gets Supply+Demand,
  Operations restricted to Super Admin + Reviewer only
- Root redirect routes each persona to their first workspace
- Match Center: replaced 3-panel with auto-sorted flat list + drawer
- AI Search: unified form with dual-action (Jetzt suchen / Als Suchprofil speichern)
- CompareTray hidden on non-Demand routes; Vergleichen removed from Supply
- LocationIntelligencePanel: city KPIs, rent trends, soft factors, comparables
- NegotiationInsightsPanel: price positioning, active demand, selling arguments
- scoreCalculator: cap hardMatchScore and softFactorScore to max 100
- Layout: add display:flex to overflow:hidden wrappers so inner scroll works
  (MatchCenter drawer, MarketIntelligence, SourceMonitoring, SignalPipeline)

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

src/pages/auth/LoginScreen.tsx

@@ -18,10 +18,10 @@ import { UserRole } from '../../domain/enums'
 
 const DEMO_ROLES: { role: UserRole; label: string; description: string }[] = [
   { role: UserRole.ORGANIZATION_ADMIN, label: 'Org Admin', description: 'Vollzugriff Supply + Demand + Ops' },
-  { role: UserRole.PROPERTY_MANAGER, label: 'Property Manager', description: 'Supply Workspace' },
-  { role: UserRole.DEMAND_USER, label: 'Demand User', description: 'Demand Workspace' },
+  { role: UserRole.PROPERTY_MANAGER, label: 'Verwaltung', description: 'Portfolio verwalten + Markt durchsuchen' },
+  { role: UserRole.DEMAND_USER, label: 'Bürosuche', description: 'Nur Marktsuche — kein Portfolio' },
   { role: UserRole.REVIEWER, label: 'Reviewer', description: 'Operations Workspace' },
-  { role: UserRole.OWNER_VIEWER, label: 'Owner Viewer', description: 'Supply (eingeschränkt)' },
+  { role: UserRole.OWNER_VIEWER, label: 'Eigentümer', description: 'Supply (eingeschränkt)' },
   { role: UserRole.SUPER_ADMIN, label: 'Super Admin', description: 'Plattform-Administrator' },
 ]