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/admin/OrderPickupAction.tsx

@@ -35,7 +35,7 @@ export default function OrderPickupAction({
   }
 
   return (
-    <button
+    <button type="button"
       onClick={handleMarkPickup}
       disabled={loading}
       className="rounded-xl bg-emerald-600 px-4 py-2 text-sm font-semibold text-white hover:bg-emerald-700 disabled:opacity-50"