feat: Reminder Manager + Schattenmarkt-Freigabe + mock data overhaul

- Add Reminder Manager page (/supply/reminder-manager) with KPI bar,
  filter bar, list/card feed, and detail drawer (7 sections incl.
  activity log, snooze, complete, dismiss actions)
- Add Schattenmarkt-Freigabe toggle on PropertyDetailView: Verwaltung
  can opt-in properties for early market exposure before contract expiry
- Auto-generate FutureSignal cards via useSchattenmarktSignals hook
  when leaseEndDate - leadTimeMonths <= MOCK_TODAY
- Fix useUnifiedResults: use property.resultType as fallback (was
  defaulting everything to VERIFIED_PORTFOLIO)
- Fix demand Results: hide VERIFIED_PORTFOLIO from non-manager users
  even when showOwnProperties toggle was previously enabled
- Fix AppShell: redirect to allowed workspace on user role switch
- Fix 3 wrong match scores (match-002: 93→62, match-009: 86→55,
  match-017: 87→52)
- Add 7 new match records (match-050–056) for need-001, need-002,
  need-011
- Add need-011 (Retail Bern Innenstadt)
- Add prop-031–036 (EXTERNAL_MARKET / MAISON_WORK / FUTURE_AVAILABILITY)
- Fix duplicate image URLs across all properties
- Add signal-011 (Bern Altstadt, Mode Boutique) + propertyId to
  signal-001

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

src/components/match-card/IntelligenceMatchCard.tsx

@@ -27,12 +27,13 @@ const RESULT_TYPE_META: Record<string, { label: string; color: string }> = {
 }
 
 const SOURCE_META: Record<string, { label: string; icon: React.ReactNode }> = {
-  JOB_POSTING:        { label: 'Stelleninserate', icon: <Briefcase size={11} /> },
-  PRESS:              { label: 'Pressebericht',   icon: <Newspaper size={11} /> },
-  CONSTRUCTION_PERMIT:{ label: 'Baubewilligung',  icon: <FileCheck size={11} /> },
-  COMPANY_REPORT:     { label: 'Geschäftsbericht',icon: <FileText size={11} /> },
-  MARKET_DATA:        { label: 'Marktdaten',      icon: <BarChart2 size={11} /> },
-  MANUAL:             { label: 'Analyst',         icon: <User size={11} /> },
+  JOB_POSTING:        { label: 'Stelleninserate',    icon: <Briefcase size={11} /> },
+  PRESS:              { label: 'Pressebericht',       icon: <Newspaper size={11} /> },
+  CONSTRUCTION_PERMIT:{ label: 'Baubewilligung',      icon: <FileCheck size={11} /> },
+  COMPANY_REPORT:     { label: 'Geschäftsbericht',    icon: <FileText size={11} /> },
+  MARKET_DATA:        { label: 'Marktdaten',          icon: <BarChart2 size={11} /> },
+  MANUAL:             { label: 'Analyst',             icon: <User size={11} /> },
+  LEASE_CONTRACT:     { label: 'Vertrag verifiziert', icon: <ShieldCheck size={11} /> },
 }
 
 const SIGNAL_TYPE_LABELS: Record<string, string> = {
@@ -42,6 +43,7 @@ const SIGNAL_TYPE_LABELS: Record<string, string> = {
   RESTRUCTURING:       'Restrukturierung',
   PROJECT_DEVELOPMENT: 'Projektentwicklung',
   SPACE_CONSOLIDATION: 'Flächenkonsolidierung',
+  LEASE_EXPIRY:        'Vertragsende',
 }
 
 // Human-readable explanation of WHY a signal type is relevant to a space search