perf: memoize expensive list computations + memo on grid/list items

Results.tsx:
- useMemo: filter + sort in one pass (was 7 separate array iterations per render)
- useMemo: platform/maison/future/missingData counts in single for-loop
- Fix: move queryClient.invalidateQueries from render body into useEffect

Properties.tsx:
- useMemo: wrap applyFilters() call (was full copy+sort on every render)
- useMemo: compute matchReady/criticalGaps/lowConfidence/staleOrOutdated/
  allMissingFields in a single for-loop (was 5 separate filter passes)

ReminderFeed.tsx:
- useMemo: wrap applyFilters() call
- useCallback: resetFilters (passed to ReminderEmptyState)

PropertyIntelligenceCard, ReminderListRow:
- React.memo: grid/list items no longer re-render when unrelated parent
  state changes (e.g. selectedId, filter UI state)

tsc --noEmit passes with zero errors

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

src/components/supply/PropertyIntelligenceCard.tsx

@@ -1,3 +1,4 @@
+import { memo } from 'react'
 import { Box, Button, Chip, LinearProgress, Typography } from '@mui/material'
 import { LocationPreview } from '../shared/LocationPreview'
 import { getAssetTypeColor, getAssetTypeLabel, getAvailabilityLabel } from './propertyHelpers'
@@ -14,7 +15,7 @@ function availabilityBadgeColor(status: string): string {
   return '#64748b'
 }
 
-export function PropertyIntelligenceCard({ property: p, onSelect }: Props) {
+export const PropertyIntelligenceCard = memo(function PropertyIntelligenceCard({ property: p, onSelect }: Props) {
   const confPct = Math.round(p.confidenceScore * 100)
   const confColor = p.confidenceScore >= 0.75 ? '#1a7a4a' : p.confidenceScore >= 0.55 ? '#d97706' : '#c0392b'
 
@@ -138,4 +139,4 @@ export function PropertyIntelligenceCard({ property: p, onSelect }: Props) {
       </Box>
     </Box>
   )
-}
+})