feat: Added featured technique spotlight section and converted recently…

- "frontend/src/pages/Home.tsx"
- "frontend/src/App.css"

GSD-Task: S03/T02

frontend/src/App.css

@@ -1173,8 +1173,78 @@ a.app-footer__repo:hover {
 
 /* ── Recently Added section ───────────────────────────────────────────────── */
 
+/* ── Featured technique spotlight ──────────────────────────────────────── */
+
+.home-featured {
+  max-width: 42rem;
+  margin: 0 auto 1.5rem;
+  padding: 1.25rem 1.5rem;
+  background: var(--color-bg-surface);
+  border: 1px solid var(--color-border);
+  border-left: 3px solid var(--color-accent);
+  border-radius: 0.5rem;
+  text-align: left;
+}
+
+.home-featured__label {
+  font-size: 0.6875rem;
+  font-weight: 700;
+  text-transform: uppercase;
+  letter-spacing: 0.05em;
+  color: var(--color-accent);
+  margin-bottom: 0.5rem;
+}
+
+.home-featured__title {
+  display: block;
+  font-size: 1.25rem;
+  font-weight: 700;
+  color: var(--color-text);
+  text-decoration: none;
+  margin-bottom: 0.5rem;
+  line-height: 1.3;
+}
+
+.home-featured__title:hover {
+  color: var(--color-accent-hover);
+}
+
+.home-featured__summary {
+  font-size: 0.875rem;
+  color: var(--color-text-secondary);
+  line-height: 1.5;
+  margin-bottom: 0.75rem;
+}
+
+.home-featured__meta {
+  display: flex;
+  align-items: center;
+  gap: 0.5rem;
+  flex-wrap: wrap;
+  margin-bottom: 0.5rem;
+}
+
+.home-featured__moments {
+  font-size: 0.75rem;
+  color: var(--color-text-tertiary);
+  white-space: nowrap;
+}
+
+.home-featured__creator {
+  display: block;
+  font-size: 0.8125rem;
+  color: var(--color-text-secondary);
+  text-decoration: none;
+}
+
+.home-featured__creator:hover {
+  color: var(--color-accent-hover);
+}
+
+/* ── Recently added ───────────────────────────────────────────────────── */
+
 .recent-section {
-  max-width: 36rem;
+  max-width: 42rem;
   margin: 0 auto 2rem;
 }
 
@@ -1185,8 +1255,8 @@ a.app-footer__repo:hover {
 }
 
 .recent-list {
-  display: flex;
-  flex-direction: column;
+  display: grid;
+  grid-template-columns: repeat(2, 1fr);
   gap: 0.5rem;
 }
 
@@ -2209,6 +2279,14 @@ a.app-footer__repo:hover {
     grid-template-columns: 1fr;
   }
 
+  .recent-list {
+    grid-template-columns: 1fr;
+  }
+
+  .home-featured {
+    padding: 1rem 1.25rem;
+  }
+
   .technique-header__title {
     font-size: 1.375rem;
   }

frontend/src/pages/Home.tsx

@@ -20,6 +20,7 @@ export default function Home() {
   const [query, setQuery] = useState("");
   const [suggestions, setSuggestions] = useState<SearchResultItem[]>([]);
   const [showDropdown, setShowDropdown] = useState(false);
+  const [featured, setFeatured] = useState<TechniqueListItem | null>(null);
   const [recent, setRecent] = useState<TechniqueListItem[]>([]);
   const [recentLoading, setRecentLoading] = useState(true);
   const [popularTopics, setPopularTopics] = useState<{name: string; count: number}[]>([]);
@@ -33,12 +34,28 @@ export default function Home() {
     inputRef.current?.focus();
   }, []);
 
+  // Load featured technique (random)
+  useEffect(() => {
+    let cancelled = false;
+    void (async () => {
+      try {
+        const res = await fetchTechniques({ sort: "random", limit: 1 });
+        if (!cancelled && res.items.length > 0) setFeatured(res.items[0]);
+      } catch {
+        // silently ignore — optional section
+      }
+    })();
+    return () => {
+      cancelled = true;
+    };
+  }, []);
+
   // Load recently added techniques
   useEffect(() => {
     let cancelled = false;
     void (async () => {
       try {
-        const res = await fetchTechniques({ limit: 5 });
+        const res = await fetchTechniques({ sort: "recent", limit: 6 });
         if (!cancelled) setRecent(res.items);
       } catch {
         // silently ignore — not critical
@@ -255,6 +272,37 @@ export default function Home() {
         </Link>
       </section>
 
+      {/* Featured Technique Spotlight */}
+      {featured && (
+        <section className="home-featured">
+          <h3 className="home-featured__label">Featured Technique</h3>
+          <Link to={`/techniques/${featured.slug}`} className="home-featured__title">
+            {featured.title}
+          </Link>
+          {featured.summary && (
+            <p className="home-featured__summary">{featured.summary}</p>
+          )}
+          <div className="home-featured__meta">
+            {featured.topic_category && (
+              <span className="badge badge--category">{featured.topic_category}</span>
+            )}
+            {featured.topic_tags && featured.topic_tags.length > 0 && featured.topic_tags.map(tag => (
+              <span key={tag} className="pill pill--tag">{tag}</span>
+            ))}
+            {featured.key_moment_count > 0 && (
+              <span className="home-featured__moments">
+                {featured.key_moment_count} moment{featured.key_moment_count !== 1 ? "s" : ""}
+              </span>
+            )}
+          </div>
+          {featured.creator_name && (
+            <Link to={`/creators/${featured.creator_slug}`} className="home-featured__creator">
+              by {featured.creator_name}
+            </Link>
+          )}
+        </section>
+      )}
+
       {/* Recently Added */}
       <section className="recent-section">
         <h3 className="recent-section__title">Recently Added</h3>
@@ -264,7 +312,10 @@ export default function Home() {
           <div className="empty-state">No techniques yet.</div>
         ) : (
           <div className="recent-list">
-            {recent.map((t) => (
+            {recent
+              .filter((t) => t.id !== featured?.id)
+              .slice(0, 4)
+              .map((t) => (
               <Link
                 key={t.id}
                 to={`/techniques/${t.slug}`}
@@ -285,8 +336,8 @@ export default function Home() {
                   ))}
                   {t.summary && (
                     <span className="recent-card__summary">
-                      {t.summary.length > 100
-                        ? `${t.summary.slice(0, 100)}…`
+                      {t.summary.length > 150
+                        ? `${t.summary.slice(0, 150)}…`
                         : t.summary}
                     </span>
                   )}