Keep listed published rules public and guest-claim rules unlisted, with semantic document markup and share chrome that stays clickable.

Guest publishes remain share-by-link but stay out of the catalog and sitemap, and their pages send noindex until claimed. The published-rule view now uses heading and list markup matching Markdown export, and top banners sit below the header so Share is not covered.

Co-authored-by: Cursor <cursoragent@cursor.com>

lib/publishedRuleAccess.ts

@@ -0,0 +1,24 @@
+import type { Prisma } from "@prisma/client";
+
+/**
+ * Access model for published CommunityRules:
+ *
+ * - **Readable without sign-in:** every published row is share-by-link at
+ *   `/rules/[id]` and `GET /api/rules/[id]`.
+ * - **Listed** (public catalog `GET /api/rules`, sitemap, indexable): owned
+ *   rows, and ownerless rows that are *not* waiting on a guest claim
+ *   (including rules orphaned when an account is deleted).
+ * - **Unlisted** (omitted from the catalog and sitemap, `noindex`): guest
+ *   publishes with `userId` null and `claimTokenHash` set, until claimed.
+ */
+export function isListedPublishedRule(row: {
+  userId: string | null;
+  claimTokenHash: string | null;
+}): boolean {
+  return row.userId != null || row.claimTokenHash == null;
+}
+
+/** Prisma `where` for the public catalog and sitemap. */
+export const LISTED_PUBLISHED_RULE_WHERE: Prisma.PublishedRuleWhereInput = {
+  OR: [{ userId: { not: null } }, { claimTokenHash: null }],
+};