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/ReminderFeed.tsx

@@ -1,3 +1,4 @@
+import { useMemo, useCallback } from 'react'
 import { Box, Typography } from '@mui/material'
 import { useReminders } from '../../hooks/useReminders'
 import { useShallow } from 'zustand/react/shallow'
@@ -43,17 +44,21 @@ export function ReminderFeed() {
     setSearchQuery: s.setSearchQuery,
   })))
 
-  if (isLoading) return <ReminderSkeleton />
-
   const reminders = data ?? []
-  const filtered = applyFilters(reminders, filterType, filterStatus, filterPriority, searchQuery)
 
-  function resetFilters() {
+  const filtered = useMemo(
+    () => applyFilters(reminders, filterType, filterStatus, filterPriority, searchQuery),
+    [reminders, filterType, filterStatus, filterPriority, searchQuery],
+  )
+
+  const resetFilters = useCallback(() => {
     setFilterType('ALL')
     setFilterStatus('ALL')
     setFilterPriority('ALL')
     setSearchQuery('')
-  }
+  }, [setFilterType, setFilterStatus, setFilterPriority, setSearchQuery])
+
+  if (isLoading) return <ReminderSkeleton />
 
   if (filtered.length === 0) {
     return <ReminderEmptyState onReset={resetFilters} />