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/actions/shipping/fedex-rates.ts

@@ -183,15 +183,16 @@ await getSession();  const adminUser = await getAdminUser();
     return { success: false, error: "FedEx not configured for this brand" };
   }
 
-  // Check perishable status
-  const perishable = await isOrderPerishable(orderId, effectiveBrandId);
-
-  // Get FedEx token
-  const tokenResult = await getFedExToken({
-    fedexApiKey: settings.fedex_api_key,
-    fedexApiSecret: settings.fedex_api_secret,
-    useProduction: settings.fedex_use_production,
-  });
+  // Check perishable status and fetch FedEx token — these are
+  // independent, so fetch them in parallel and save a round-trip.
+  const [perishable, tokenResult] = await Promise.all([
+    isOrderPerishable(orderId, effectiveBrandId),
+    getFedExToken({
+      fedexApiKey: settings.fedex_api_key,
+      fedexApiSecret: settings.fedex_api_secret,
+      useProduction: settings.fedex_use_production,
+    }),
+  ]);
 
   if ("error" in tokenResult) {
     return { success: false, error: tokenResult.error };