implement website share functionality using share table

- Add support for multiple share URLs per website with server-generated slugs
- Create shares API endpoint for listing and creating website shares
- Add SharesTable, ShareEditButton, ShareDeleteButton components
- Move share management to website settings, remove header share button
- Remove shareId from website update API (now uses separate share table)

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

src/queries/prisma/share.ts

@@ -1,14 +1,15 @@
 import type { Prisma } from '@/generated/prisma/client';
 import prisma from '@/lib/prisma';
+import type { QueryFilters } from '@/lib/types';
 
 export async function findShare(criteria: Prisma.ShareFindUniqueArgs) {
   return prisma.client.share.findUnique(criteria);
 }
 
-export async function getShare(entityId: string) {
+export async function getShare(shareId: string) {
   return findShare({
     where: {
-      id: entityId,
+      id: shareId,
     },
   });
 }
@@ -21,6 +22,23 @@ export async function getShareByCode(slug: string) {
   });
 }
 
+export async function getSharesByEntityId(entityId: string, filters?: QueryFilters) {
+  const { pagedQuery } = prisma;
+
+  return pagedQuery(
+    'share',
+    {
+      where: {
+        entityId,
+      },
+      orderBy: {
+        createdAt: 'desc',
+      },
+    },
+    filters,
+  );
+}
+
 export async function createShare(
   data: Prisma.ShareCreateInput | Prisma.ShareUncheckedCreateInput,
 ) {