Bump to v0.8.0 — polish, portability, discovery

Profile banner polish (hero height, click-to-lightbox, avatar overlap),
data export (bookmarks/follows/relays as JSON), relay recommendations
(discover from follows' NIP-65 lists), reading list tracking (read/unread
on bookmarked articles with sidebar badge), trending hashtags (clickable
pills on search idle screen). Updated CLAUDE.md and release notes.

src/components/article/ArticleView.tsx

@@ -75,6 +75,8 @@ export function ArticleView() {
 
   const naddr = pendingArticleNaddr ?? "";
 
+  const { markArticleRead } = useBookmarkStore();
+
   useEffect(() => {
     if (!naddr) { setLoading(false); return; }
     // Use cached event if available (from ArticleCard click), skip relay fetch
@@ -96,6 +98,15 @@ export function ArticleView() {
       .finally(() => setLoading(false));
   }, [naddr]);
 
+  // Auto-mark article as read when opened
+  useEffect(() => {
+    if (!event) return;
+    const dTag = event.tags.find((t) => t[0] === "d")?.[1];
+    if (dTag) {
+      markArticleRead(`30023:${event.pubkey}:${dTag}`);
+    }
+  }, [event]);
+
   const title = event ? getTag(event, "title") : "";
   const summary = event ? getTag(event, "summary") : "";
   const image = event ? getTag(event, "image") : "";