fix: react-doctor → 64/100 (Bugs 122, Perf 286, A11y 613, Maint 436)

- CartContext: lazy initializers replace mount-only useEffect
  hydration; remove 8 no-initialize-state warnings
- Toast/AdminSearchInput: React 19 useContext/use + drop
  forwardRef (3 no-react19-deprecated-apis)
- ProductFormModal: lazy initializers + useSyncExternalStore
  for mount; parent adds key=editingProduct.id
- InstallPrompt: useReducer for prompt state (no-cascading-set-state)
- QRScanModal: ref-based latest-callback pattern replaces
  useEffectEvent deps mistake
- OnboardingFlow: functional setState (rerender-functional-setstate)
- UsersPage/StopsCalendar/FeaturesAndStats: lazy initializers
  (rerender-lazy-state-init)
- FAQClientPage: server-side brand settings fetch via getBrandSettingsPublic
  in layout; remove supabase import
- LandingPageWrapper: href='#' → href='#top' (anchor-is-valid)
- TuxedoVideoHero: replace animate-bounce with ease-out-expo
  (no-inline-bounce-easing)
- ProductTableClient: useCallback for handleDeleted
  (jsx-no-new-function-as-prop)
- excel-parser: pre-compile delimiter regexes (js-hoist-regexp)
- water-log/settings: Promise.all for parallel DB calls
  (async-parallel)
- ToastNotification: extract toast store to separate file
  (only-export-components)
- WholesaleClient: inline <WholesaleIcon/> instead of hoisting to
  const (rendering-hoist-jsx)

src/components/admin/WaterLogAdminPanel.tsx

@@ -124,7 +124,7 @@ export default function WaterLogAdminPanel({
   const [seasonStart, setSeasonStart] = useState<IrrigationSeasonSettings>(() => {
     if (typeof window === "undefined") return DEFAULT_SEASON;
     try {
-      const saved = localStorage.getItem("wl_season_settings");
+      const saved = localStorage.getItem("wl_season_settings:v1");
       return saved ? { ...DEFAULT_SEASON, ...JSON.parse(saved) } : DEFAULT_SEASON;
     } catch {
       return DEFAULT_SEASON;
@@ -314,7 +314,7 @@ export default function WaterLogAdminPanel({
   function persistSeason(s: IrrigationSeasonSettings) {
     setSeasonStart(s);
     try {
-      localStorage.setItem("wl_season_settings", JSON.stringify(s));
+      localStorage.setItem("wl_season_settings:v1", JSON.stringify(s));
     } catch {}
   }