gm4ebnr3j: Add three-column layout with featured experts and trending minnects rails

src/components/App.tsx

@@ -1,10 +1,12 @@
 "use client";
 
+import Link from "next/link";
 import { useEffect, useState } from "react";
 import { loadSession, type Person } from "@/lib/auth-client";
 import { SignInForm } from "./SignInForm";
 import { Logo } from "./Logo";
 import { Feed } from "./Feed";
+import { DiscoverRails } from "./DiscoverRails";
 
 type State = { kind: "loading" } | { kind: "out" } | { kind: "in"; person: Person };
 
@@ -46,7 +48,19 @@ export function App() {
           <span>{state.person.email}</span>
         </div>
       </header>
-      <Feed feedUserId={state.person.feedUserId} onSignedOut={() => setState({ kind: "out" })} />
+      <div className="columns">
+        <nav className="col-left" aria-label="Main">
+          <ul>
+            <li><Link href="/" aria-current="page">Feed</Link></li>
+          </ul>
+        </nav>
+        <div className="col-center">
+          <Feed feedUserId={state.person.feedUserId} onSignedOut={() => setState({ kind: "out" })} />
+        </div>
+        <aside className="col-right" aria-label="Discover">
+          <DiscoverRails />
+        </aside>
+      </div>
     </main>
   );
 }

src/components/DiscoverRails.tsx

@@ -0,0 +1,28 @@
+"use client";
+
+import { useEffect, useState } from "react";
+import type { DiscoverData } from "@/lib/discover";
+import { fetchDiscover } from "@/lib/discover-client";
+import { FeaturedExpertsRail } from "./FeaturedExpertsRail";
+import { TrendingMinnectsRail } from "./TrendingMinnectsRail";
+
+export function DiscoverRailsView({ data }: { data: DiscoverData | null }) {
+  if (!data) return null;
+  return (
+    <>
+      <FeaturedExpertsRail experts={data.featuredExperts} />
+      <TrendingMinnectsRail minnects={data.trendingMinnects} />
+    </>
+  );
+}
+
+/** Loads /api/discover once. Failure hides the rails; the feed is unaffected. */
+export function DiscoverRails() {
+  const [data, setData] = useState<DiscoverData | null>(null);
+  useEffect(() => {
+    let live = true;
+    fetchDiscover().then((d) => { if (live) setData(d); }, () => {});
+    return () => { live = false; };
+  }, []);
+  return <DiscoverRailsView data={data} />;
+}

src/components/FeaturedExpertsRail.tsx

@@ -0,0 +1,38 @@
+import type { DiscoverExpert } from "@/lib/discover";
+import { initials } from "@/lib/feed-model";
+
+function Rating({ rating, reviews }: { rating: number | null; reviews: number | null }) {
+  if (rating === null && reviews === null) return null;
+  return (
+    <span className="rail-meta">
+      {rating !== null ? <span aria-label={`Rated ${rating.toFixed(1)} out of 5`}>★ {rating.toFixed(1)}</span> : null}
+      {reviews !== null ? <span> ({reviews} {reviews === 1 ? "review" : "reviews"})</span> : null}
+    </span>
+  );
+}
+
+export function FeaturedExpertsRail({ experts }: { experts: DiscoverExpert[] }) {
+  if (experts.length === 0) return null;
+  return (
+    <section className="rail" aria-labelledby="rail-experts">
+      <h2 id="rail-experts">Featured experts</h2>
+      <ul className="rail-list">
+        {experts.map((e) => (
+          <li key={String(e.id)} className="rail-card expert-card" data-testid="expert-card">
+            {e.pictureUrl ? (
+              // eslint-disable-next-line @next/next/no-img-element
+              <img className="avatar" src={e.pictureUrl} alt="" width={40} height={40} />
+            ) : (
+              <span className="avatar avatar-initials" aria-hidden="true">{initials(e.displayName)}</span>
+            )}
+            <div className="rail-text">
+              <strong className="rail-name">{e.displayName || "Expert"}</strong>
+              {e.byline ? <span className="rail-byline">{e.byline}</span> : null}
+              <Rating rating={e.rating} reviews={e.reviewsCount} />
+            </div>
+          </li>
+        ))}
+      </ul>
+    </section>
+  );
+}

src/components/TrendingMinnectsRail.tsx

@@ -0,0 +1,40 @@
+import type { DiscoverMinnect } from "@/lib/discover";
+import { initials } from "@/lib/feed-model";
+
+export function TrendingMinnectsRail({ minnects }: { minnects: DiscoverMinnect[] }) {
+  if (minnects.length === 0) return null;
+  return (
+    <section className="rail" aria-labelledby="rail-trending">
+      <h2 id="rail-trending">Trending minnects</h2>
+      <ul className="rail-list">
+        {minnects.map((m) => {
+          const who = m.expert.displayName || "Expert";
+          return (
+            <li key={String(m.id)} className="rail-card minnect-card" data-testid="minnect-card">
+              <div className="minnect-who">
+                {m.expert.pictureUrl ? (
+                  // eslint-disable-next-line @next/next/no-img-element
+                  <img className="avatar avatar-sm" src={m.expert.pictureUrl} alt="" width={28} height={28} />
+                ) : (
+                  <span className="avatar avatar-sm avatar-initials" aria-hidden="true">{initials(who)}</span>
+                )}
+                <strong className="rail-name">{who}</strong>
+              </div>
+              {m.thumbnailUrl ? (
+                // eslint-disable-next-line @next/next/no-img-element
+                <img className="minnect-thumb" src={m.thumbnailUrl} alt={m.question ? `Thumbnail for: ${m.question}` : "Minnect thumbnail"} />
+              ) : null}
+              {m.question ? <p className="minnect-question">{m.question}</p> : null}
+              {m.views !== null ? (
+                <span className="rail-meta">{m.views.toLocaleString("en-US")} {m.views === 1 ? "view" : "views"}</span>
+              ) : null}
+              {m.audio.url ? (
+                <audio className="minnect-audio" controls preload="none" src={m.audio.url} aria-label={`Play answer from ${who}`} />
+              ) : null}
+            </li>
+          );
+        })}
+      </ul>
+    </section>
+  );
+}