add standard.site validation

app/lish/[did]/[publication]/.well-known/site.standard.publication/route.ts

···
+import { publicationNameOrUriFilter } from "src/utils/uriHelpers";
+import { supabaseServerClient } from "supabase/serverClient";
+
+export async function GET(
+  req: Request,
+  props: {
+    params: Promise<{ publication: string; did: string }>;
+  },
+) {
+  let params = await props.params;
+  let did = decodeURIComponent(params.did);
+  let publication_name = decodeURIComponent(params.publication);
+  let [{ data: publications }] = await Promise.all([
+    supabaseServerClient
+      .from("publications")
+      .select(
+        `*,
+        publication_subscriptions(*),
+        documents_in_publications(documents(
+          *,
+          comments_on_documents(count),
+          document_mentions_in_bsky(count)
+        ))
+      `,
+      )
+      .eq("identity_did", did)
+      .or(publicationNameOrUriFilter(did, publication_name))
+      .order("uri", { ascending: false })
+      .limit(1),
+  ]);
+  let publication = publications?.[0];
+  if (!did || !publication) return new Response(null, { status: 404 });
+  return new Response(publication.uri);
+}

app/p/[didOrHandle]/[rkey]/page.tsx

···
 
   return {
     icons: {
-      other: {
-        rel: "alternate",
-        url: document.uri,
-      },
+      other: [
+        {
+          rel: "alternate",
+          url: document.uri,
+        },
+        { rel: "site.standard.document", url: document.uri },
+      ],
     },
     title: docRecord.title,
     description: docRecord?.description || "",