Refactor: move public storefront stop data to server-side + parallel agent work

Server-side / caching refactor (Grok):
- New RPC get_public_stops_for_brand (migration 148) for public storefront stops
- New server action getPublicStopsForBrand with revalidate=300 + tags
- Add revalidateTag invalidation to createStopsBatch + publishStop
- Convert /tuxedo/stops and /indian-river-direct/stops to Server Components
- Extract TuxedoStopsList + IndianRiverStopsList as client islands (GSAP only)
- Removes supabase-js from browser bundle on those routes
- Both pages now statically prerendered (5m ISR)

Parallel agent changes also staged:
- AI provider model list refresh (claude-sonnet-4-5, etc.)
- ESLint directive patches for react-hooks/set-state-in-effect
- Admin + storefront + checkout + cart updates
- New admin_create_stop_rpcs migration (147)
- Misc fixes across ~90 files

Build verified: typecheck clean, lint clean on new files, production build succeeds.

src/app/checkout/CheckoutClient.tsx

@@ -2,6 +2,7 @@
 
 import { useState, useEffect, useRef, useCallback } from "react";
 import { useRouter } from "next/navigation";
+import Link from "next/link";
 import { useCart } from "@/context/CartContext";
 import { createRetailStripeCheckoutSession } from "@/actions/billing/retail-checkout";
 import StorefrontHeader from "@/components/storefront/StorefrontHeader";
@@ -134,12 +135,12 @@ export default function CheckoutClient() {
             <h1 className="text-3xl font-bold text-stone-900">
               Your cart is empty
             </h1>
-            <a
+            <Link
               href="/"
               className="mt-4 inline-block text-stone-600 hover:text-stone-900"
             >
               ← Back to storefront
-            </a>
+            </Link>
           </div>
         </main>
       </div>