feat: user relay management, blog naddr sync, and OG image update

Add UserRelay API and dashboard relays tab with NIP-65 import, store post
naddr for Nostr articles, and ship Prisma migrations for board tables,
user relays, and post metadata.

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

frontend/app/blog/[slug]/BlogPostClient.tsx

@@ -7,7 +7,7 @@ import ReactMarkdown from "react-markdown";
 import remarkGfm from "remark-gfm";
 import { api } from "@/lib/api";
 import { formatDate } from "@/lib/utils";
-import { hasNostrExtension, getPublicKey, signEvent, publishEvent, shortenPubkey, fetchNostrProfile, type NostrProfile } from "@/lib/nostr";
+import { hasNostrExtension, getPublicKey, signEvent, publishEvent, shortenPubkey, fetchNostrProfile, fetchLongformFromRelays, fetchEventFromRelays, type NostrProfile } from "@/lib/nostr";
 import { Navbar } from "@/components/public/Navbar";
 import { Footer } from "@/components/public/Footer";
 import type { Components } from "react-markdown";
@@ -23,6 +23,7 @@ interface Post {
   publishedAt?: string;
   createdAt?: string;
   nostrEventId?: string;
+  naddr?: string;
   categories?: { category: { id: string; name: string; slug: string } }[];
 }
 
@@ -147,6 +148,8 @@ export default function BlogPostClient({ slug }: { slug: string }) {
   const [hasNostr, setHasNostr] = useState(false);
   const [submitting, setSubmitting] = useState(false);
   const [authorProfile, setAuthorProfile] = useState<NostrProfile | null>(null);
+  const [liveContent, setLiveContent] = useState<string | null>(null);
+  const [loadingContent, setLoadingContent] = useState(false);
 
   useEffect(() => {
     setHasNostr(hasNostrExtension());
@@ -156,18 +159,36 @@ export default function BlogPostClient({ slug }: { slug: string }) {
     if (!slug) return;
     setLoading(true);
     setError(null);
+    setLiveContent(null);
     api
       .getPost(slug)
       .then((data) => {
         setPost(data);
+        setLoading(false);
         if (data?.authorPubkey) {
           fetchNostrProfile(data.authorPubkey)
             .then((profile) => setAuthorProfile(profile))
             .catch(() => {});
         }
+        if (!data?.content && (data?.naddr || data?.nostrEventId)) {
+          setLoadingContent(true);
+          const fetchPromise = data.naddr
+            ? fetchLongformFromRelays(data.naddr)
+            : fetchEventFromRelays(data.nostrEventId!);
+          fetchPromise
+            .then((event) => {
+              if (event?.content) {
+                setLiveContent(event.content);
+              }
+            })
+            .catch(() => {})
+            .finally(() => setLoadingContent(false));
+        }
       })
-      .catch((err) => setError(err.message))
-      .finally(() => setLoading(false));
+      .catch((err) => {
+        setError(err.message);
+        setLoading(false);
+      });
   }, [slug]);
 
   useEffect(() => {
@@ -306,12 +327,24 @@ export default function BlogPostClient({ slug }: { slug: string }) {
               </header>
 
               <article className="mb-16">
-                <ReactMarkdown
-                  remarkPlugins={[remarkGfm]}
-                  components={markdownComponents}
-                >
-                  {post.content}
-                </ReactMarkdown>
+                {loadingContent ? (
+                  <div className="animate-pulse space-y-4">
+                    {[85, 92, 78, 95, 88, 72, 90, 83].map((w, i) => (
+                      <div
+                        key={i}
+                        className="h-4 bg-surface-container-high rounded"
+                        style={{ width: `${w}%` }}
+                      />
+                    ))}
+                  </div>
+                ) : (
+                  <ReactMarkdown
+                    remarkPlugins={[remarkGfm]}
+                    components={markdownComponents}
+                  >
+                    {post.content || liveContent || ""}
+                  </ReactMarkdown>
+                )}
               </article>
 
               <section className="bg-surface-container-low rounded-xl p-8 mb-16">