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/admin/blog/page.tsx

@@ -3,6 +3,7 @@
 import { useEffect, useState } from "react";
 import { api } from "@/lib/api";
 import { cn } from "@/lib/utils";
+import { fetchEventFromRelays, fetchLongformFromRelays } from "@/lib/nostr";
 import {
   Pencil,
   Trash2,
@@ -56,13 +57,24 @@ export default function BlogPage() {
     setFetching(true);
     setError("");
     try {
-      const isNaddr = importInput.startsWith("naddr");
-      const data = await api.fetchNostrEvent(
-        isNaddr ? { naddr: importInput } : { eventId: importInput }
-      );
-      setImportPreview(data);
+      const isNaddr = importInput.trim().startsWith("naddr");
+      const event = isNaddr
+        ? await fetchLongformFromRelays(importInput.trim())
+        : await fetchEventFromRelays(importInput.trim());
+
+      if (!event) {
+        setError("Event not found on relays");
+        setImportPreview(null);
+        return;
+      }
+
+      const titleTag = event.tags?.find((t: string[]) => t[0] === "title");
+      setImportPreview({
+        ...event,
+        title: titleTag?.[1] || "Untitled",
+      });
     } catch (err: any) {
-      setError(err.message);
+      setError(err.message || "Failed to fetch event");
       setImportPreview(null);
     } finally {
       setFetching(false);
@@ -70,14 +82,29 @@ export default function BlogPage() {
   };
 
   const handleImport = async () => {
-    if (!importInput.trim()) return;
+    if (!importPreview) return;
     setImporting(true);
     setError("");
     try {
-      const isNaddr = importInput.startsWith("naddr");
-      await api.importPost(
-        isNaddr ? { naddr: importInput } : { eventId: importInput }
-      );
+      const isNaddr = importInput.trim().startsWith("naddr");
+      const excerpt = (importPreview.content || "")
+        .slice(0, 200)
+        .replace(/[#*_\n]/g, "")
+        .trim();
+
+      const tags: string[] = (importPreview.tags || [])
+        .filter((t: string[]) => t[0] === "t" && t[1])
+        .map((t: string[]) => t[1].toLowerCase());
+
+      await api.importPost({
+        nostrEventId: importPreview.id,
+        naddr: isNaddr ? importInput.trim() : undefined,
+        title: importPreview.title || "Untitled",
+        excerpt: excerpt || undefined,
+        authorPubkey: importPreview.pubkey,
+        publishedAt: importPreview.created_at,
+        tags: tags.length > 0 ? tags : undefined,
+      });
       setImportInput("");
       setImportPreview(null);
       setImportOpen(false);
@@ -95,7 +122,7 @@ export default function BlogPage() {
       title: post.title || "",
       slug: post.slug || "",
       excerpt: post.excerpt || "",
-      categories: post.categories?.map((c: any) => c.id || c) || [],
+      categories: post.categories?.map((c: any) => c.categoryId || c.category?.id || c) || [],
       featured: post.featured || false,
       visible: post.visible !== false,
     });
@@ -184,6 +211,20 @@ export default function BlogPage() {
               <p className="text-on-surface/60 text-sm mt-1 line-clamp-3">
                 {importPreview.content?.slice(0, 300)}...
               </p>
+              {(() => {
+                const previewTags = (importPreview.tags || [])
+                  .filter((t: string[]) => t[0] === "t" && t[1])
+                  .map((t: string[]) => t[1]);
+                return previewTags.length > 0 ? (
+                  <div className="flex flex-wrap gap-1.5 mt-2">
+                    {previewTags.map((tag: string) => (
+                      <span key={tag} className="rounded-full px-2 py-0.5 text-xs bg-primary/10 text-primary font-medium">
+                        {tag}
+                      </span>
+                    ))}
+                  </div>
+                ) : null;
+              })()}
               <button
                 onClick={handleImport}
                 disabled={importing}
@@ -303,12 +344,12 @@ export default function BlogPage() {
                 <p className="text-on-surface/50 text-sm truncate">/{post.slug}</p>
                 {post.categories?.length > 0 && (
                   <div className="flex gap-2 mt-2">
-                    {post.categories.map((cat: any) => (
+                    {post.categories.map((pc: any) => (
                       <span
-                        key={cat.id || cat}
+                        key={pc.categoryId || pc.category?.id}
                         className="rounded-full px-2 py-0.5 text-xs bg-surface-container-highest text-on-surface/60"
                       >
-                        {cat.name || cat}
+                        {pc.category?.name || pc.categoryId}
                       </span>
                     ))}
                   </div>