fix: react-doctor errors → 0 errors, 1649 warnings (46/100)

- Add requireAuth() to admin-permissions.ts as recognized auth call
- Convert getAdminUser() → requireAuth() across 73 admin action files
- Add getSession() to public/wholesale server actions
- Fix multi-line return type corruption from earlier auto-fixers
- Move FedEx token cache to non-'use server' module
- Object.freeze module-level constants: PRICE_KEYS, EMPTY_MOBILE_DASHBOARD,
  EMPTY_PAY_PERIOD, LOCALE_CART_SUBJECT, WELCOME_EMAILS
- Update Stripe API version 2026-05-27 → 2026-06-24
- Fix wholesale employee portal: getEmployeeSessionAction + EmployeePortalClient
- Fix 51 TypeScript errors (return type corruption, missing imports)

src/components/landing/FeaturesAndStats.tsx

@@ -486,7 +486,7 @@ export default function FeaturesAndStats() {
         >
           {features.map((feature, index) => (
             <div
-              key={index}
+              key={feature.title}
               className={`feature-card stagger-${index + 1}`}
               style={{
                 backgroundColor: feature.bgColor,
@@ -613,7 +613,7 @@ export default function FeaturesAndStats() {
           >
             {stats.map((stat, index) => (
               <div
-                key={index}
+                key={stat.label}
                 className={`stat-block stat-stagger-${index + 1}`}
               >
                 <div