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/supply/ReminderPriorityBadge.tsx

@@ -0,0 +1,25 @@
+import { Box, Typography } from '@mui/material'
+import type { ReminderPriority } from '../../domain/reminder'
+
+const CONFIG: Record<ReminderPriority, { color: string; label: string }> = {
+  URGENT: { color: '#dc2626', label: 'Dringend' },
+  HIGH:   { color: '#ea580c', label: 'Hoch' },
+  MEDIUM: { color: '#ca8a04', label: 'Mittel' },
+  LOW:    { color: '#64748b', label: 'Niedrig' },
+}
+
+interface Props {
+  priority: ReminderPriority
+}
+
+export function ReminderPriorityBadge({ priority }: Props) {
+  const { color, label } = CONFIG[priority]
+  return (
+    <Box sx={{ display: 'flex', alignItems: 'center', gap: 0.75 }}>
+      <Box sx={{ width: 8, height: 8, borderRadius: '50%', bgcolor: color, flexShrink: 0 }} />
+      <Typography variant="caption" sx={{ color, fontWeight: 600, fontSize: '0.7rem' }}>
+        {label}
+      </Typography>
+    </Box>
+  )
+}