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/admin/water-log/headgates/HeadgatesManager.tsx

@@ -7,6 +7,7 @@ import {
   createWaterHeadgate,
   regenerateHeadgateToken,
   updateWaterHeadgate,
+  deleteWaterHeadgate,
 } from "@/actions/water-log/admin";
 import { AdminButton } from "@/components/admin/design-system";
 
@@ -118,6 +119,24 @@ export default function HeadgatesManager({ initialHeadgates, brandId }: Props) {
     }
   }
 
+  const [deletingId, setDeletingId] = useState<string | null>(null);
+
+  async function handleDelete(hg: Headgate) {
+    if (!window.confirm(`Delete headgate "${hg.name}"? Existing log entries will be preserved.`)) return;
+    setDeletingId(hg.id);
+    const res = await deleteWaterHeadgate(hg.id);
+    if (res.success) {
+      // Optimistic update + refresh
+      setHeadgates((prev) => prev.filter((h) => h.id !== hg.id));
+      const refreshed = await getWaterHeadgatesAdmin(brandId);
+      setHeadgates(refreshed);
+      showToast("Headgate deleted");
+    } else {
+      showToast(res.error ?? "Failed to delete headgate", false);
+    }
+    setDeletingId(null);
+  }
+
   function toggleSelect(id: string) {
     setSelected((prev) => {
       const next = new Set(prev);
@@ -312,6 +331,15 @@ export default function HeadgatesManager({ initialHeadgates, brandId }: Props) {
                         <AdminButton variant="secondary" size="sm" onClick={() => setQrModal(hg)}>
                           Print
                         </AdminButton>
+                        <AdminButton
+                          variant="danger"
+                          size="sm"
+                          onClick={() => handleDelete(hg)}
+                          disabled={deletingId === hg.id}
+                          isLoading={deletingId === hg.id}
+                        >
+                          Delete
+                        </AdminButton>
                       </div>
                     </td>
                   </tr>