forum: user profile pages + clickable bylines + neon pulse favicon

USER PROFILES (/forum/user/[username]):
- New API at /api/forum/user-by-username/[username] resolves by
  username OR display_name (URL-encoded), since forum threads/replies
  store author_name = display_name. Returns the persona's profile,
  thread history (up to 50), and recent replies (up to 20).
- New page renders the persona card with archetype badge
  (Audio Engineer / Colorist / etc.) + expertise level badge
  (beginner/intermediate/senior) + role title, company, location,
  years_experience, join date, and an expertise-tags chip row.
- Two columns underneath: "Threads started" and "Recent replies"
  with proper deep-links into each thread.
- Author names in /forum, /forum/[slug], and /forum/thread/[id] are
  now <Link> elements pointing to /forum/user/<displayname>, with
  onClick=stopPropagation so the card-level click handler doesn't
  also fire.

FAVICON:
- Hand-built neon pulse waveform — emerald→cyan→purple gradient on
  dark navy background, designed to read at 16×16 to 256×256.
- Multi-resolution favicon.ico (16/32/48/64) + SVG + PNGs at
  16/32/48/64/96/192/256 under /static/favicons/.
- layout.tsx icons block now references all sizes including the
  apple-touch sizes (192, 256).

No env / DB changes here — pure deploy.

src/app/forum/[slug]/page.tsx

@@ -144,7 +144,7 @@ function TopThreadsWidget({ categoryId }: { categoryId: string }) {
                   {thread.title}
                 </p>
                 <p className="text-[#555] font-body text-xs mt-0.5">
-                  <span className="text-[#666]">{thread.author_name}</span>
+                  <Link href={`/forum/user/${encodeURIComponent(thread.author_name)}`} className="text-[#666] hover:text-[#3b82f6] hover:underline" onClick={(e) => e.stopPropagation()}>{thread.author_name}</Link>
                   {' · '}{timeAgo(thread.created_at)}
                 </p>
               </div>
@@ -441,7 +441,7 @@ export default function ForumCategoryPage() {
                       </h3>
                     </div>
                     <p className="text-[#666] font-body text-xs mt-0.5">
-                      by <span className="text-[#888]">{thread.author_name}</span>
+                      by <Link href={`/forum/user/${encodeURIComponent(thread.author_name)}`} className="text-[#888] hover:text-[#3b82f6] hover:underline" onClick={(e) => e.stopPropagation()}>{thread.author_name}</Link>
                       {' · '}{timeAgo(thread.created_at)}
                     </p>
                   </div>

src/app/forum/page.tsx

@@ -153,7 +153,7 @@ function TopThreadsWidget({ categoryId }: { categoryId?: string }) {
                   {thread.title}
                 </p>
                 <p className="text-[#555] font-body text-xs mt-0.5">
-                  <span className="text-[#666]">{thread.author_name}</span>
+                  <Link href={`/forum/user/${encodeURIComponent(thread.author_name)}`} className="text-[#666] hover:text-[#3b82f6] hover:underline" onClick={(e) => e.stopPropagation()}>{thread.author_name}</Link>
                   {thread.forum_categories && (
                     <> · <span className="text-[#3b82f6]">{thread.forum_categories.name}</span></>
                   )}
@@ -483,7 +483,7 @@ export default function ForumIndexPage() {
                               {thread.title}
                             </h3>
                             <p className="text-[#666] font-body text-xs mt-0.5">
-                              by <span className="text-[#888]">{thread.author_name}</span>
+                              by <Link href={`/forum/user/${encodeURIComponent(thread.author_name)}`} className="text-[#888] hover:text-[#3b82f6] hover:underline" onClick={(e) => e.stopPropagation()}>{thread.author_name}</Link>
                               {thread.forum_categories && (
                                 <> · <span className="text-[#3b82f6]">{thread.forum_categories.name}</span></>
                               )}

src/app/forum/thread/[id]/page.tsx

@@ -354,7 +354,7 @@ export default function ForumThreadPage() {
                 <Avatar name={thread.author_name} isAI={false} />
                 <div className="flex-1 min-w-0">
                   <div className="flex items-center gap-2 mb-2">
-                    <span className="text-white font-body font-semibold text-sm">{thread.author_name}</span>
+                    <Link href={`/forum/user/${encodeURIComponent(thread.author_name)}`} className="text-white font-body font-semibold text-sm hover:text-[#3b82f6] hover:underline">{thread.author_name}</Link>
                     <span className="text-[#555] font-body text-xs">·</span>
                     <span className="text-[#555] font-body text-xs">{timeAgo(thread.created_at)}</span>
                     <span className="text-[#555] font-body text-xs">·</span>
@@ -389,7 +389,7 @@ export default function ForumThreadPage() {
                         <Avatar name={reply.author_name} isAI={reply.is_ai_response} />
                         <div className="flex-1 min-w-0">
                           <div className="flex items-center gap-2 mb-2 flex-wrap">
-                            <span className="text-white font-body font-semibold text-sm">{reply.author_name}</span>
+                            <Link href={`/forum/user/${encodeURIComponent(reply.author_name)}`} className="text-white font-body font-semibold text-sm hover:text-[#3b82f6] hover:underline">{reply.author_name}</Link>
                             {reply.is_ai_response && (
                               <span className="text-xs bg-[#3b82f6]/20 text-[#3b82f6] border border-[#3b82f6]/30 px-2 py-0.5 rounded font-body font-semibold">
                                 AI Assistant

src/app/forum/user/[username]/page.tsx

@@ -0,0 +1,264 @@
+"use client";
+
+import React, { useEffect, useState } from "react";
+import { useParams } from "next/navigation";
+import Link from "next/link";
+import Header from "@/components/Header";
+import Footer from "@/components/Footer";
+import AppImage from "@/components/ui/AppImage";
+
+interface ForumUserProfile {
+  username: string;
+  display_name: string;
+  bio: string | null;
+  avatar_url: string | null;
+  role_title: string | null;
+  company: string | null;
+  location_city: string | null;
+  location_country: string | null;
+  years_experience: number | null;
+  ai_persona_archetype: string | null;
+  expertise_level: string | null;
+  expertise_tags: string[];
+  writing_voice: string | null;
+  signature: string | null;
+  join_date: string | null;
+  last_seen_at: string | null;
+  thread_count: number;
+  reply_count: number;
+}
+
+interface UserThread {
+  id: string;
+  title: string;
+  reply_count: number;
+  view_count: number;
+  vote_score: number;
+  created_at: string;
+  forum_categories?: { name: string; slug: string };
+}
+
+interface UserReply {
+  id: string;
+  thread_id: string;
+  body: string;
+  vote_score: number;
+  created_at: string;
+  forum_threads?: { title: string };
+}
+
+const ARCHETYPE_LABELS: Record<string, string> = {
+  audio_engineer: "Audio Engineer",
+  motion_designer: "Motion Designer",
+  broadcast_engineer: "Broadcast Engineer",
+  colorist: "Colorist",
+  editor: "Editor",
+  vfx_artist: "VFX Artist",
+  camera_operator: "Camera Operator",
+  lighting_designer: "Lighting Designer",
+  post_supervisor: "Post Supervisor",
+  gear_specialist: "Gear Specialist",
+  livestream_producer: "Livestream Producer",
+  generalist: "Generalist",
+  video_editor: "Video Editor",
+};
+
+function fmtDate(iso: string | null): string {
+  if (!iso) return "—";
+  try {
+    return new Date(iso).toLocaleDateString("en-US", { month: "long", year: "numeric" });
+  } catch { return iso.slice(0, 10); }
+}
+
+export default function ForumUserPage() {
+  const params = useParams();
+  const username = params?.username as string;
+  const [data, setData] = useState<{ profile: ForumUserProfile; threads: UserThread[]; replies: UserReply[] } | null>(null);
+  const [loading, setLoading] = useState(true);
+  const [notFound, setNotFound] = useState(false);
+
+  useEffect(() => {
+    if (!username) return;
+    setLoading(true);
+    fetch(`/api/forum/user-by-username/${encodeURIComponent(username)}`, { cache: "no-store" })
+      .then(async (r) => {
+        if (r.status === 404) { setNotFound(true); return null; }
+        if (!r.ok) return null;
+        return r.json();
+      })
+      .then((d) => { if (d) setData(d); })
+      .finally(() => setLoading(false));
+  }, [username]);
+
+  if (loading) {
+    return (
+      <>
+        <Header />
+        <main className="bg-[#111111] min-h-screen">
+          <div className="max-w-container mx-auto px-4 py-12">
+            <p className="font-body text-sm text-[#666]">Loading profile…</p>
+          </div>
+        </main>
+        <Footer />
+      </>
+    );
+  }
+  if (notFound || !data) {
+    return (
+      <>
+        <Header />
+        <main className="bg-[#111111] min-h-screen">
+          <div className="max-w-container mx-auto px-4 py-12">
+            <h1 className="font-heading text-2xl font-bold text-[#e8e8e8] mb-2">User not found</h1>
+            <p className="font-body text-sm text-[#888]">No forum member with username "{username}".</p>
+            <Link href="/forum" className="font-body text-sm text-[#3b82f6] hover:underline mt-4 inline-block">← Back to The Crew Lounge</Link>
+          </div>
+        </main>
+        <Footer />
+      </>
+    );
+  }
+
+  const { profile, threads, replies } = data;
+  const location = [profile.location_city, profile.location_country].filter(Boolean).join(", ");
+  const archetypeLabel = profile.ai_persona_archetype ? (ARCHETYPE_LABELS[profile.ai_persona_archetype] || profile.ai_persona_archetype) : null;
+
+  return (
+    <>
+      <Header />
+      <main className="bg-[#111111] min-h-screen">
+        <div className="max-w-container mx-auto px-4 py-8">
+          {/* Header card */}
+          <div className="bg-[#1a1a1a] border border-[#2a2a2a] rounded-sm p-6 mb-6">
+            <div className="flex flex-col sm:flex-row sm:items-start gap-5">
+              <div className="w-20 h-20 sm:w-24 sm:h-24 rounded-full overflow-hidden border-2 border-[#2a2a2a] flex-shrink-0 bg-[#111111] flex items-center justify-center">
+                {profile.avatar_url ? (
+                  <AppImage src={profile.avatar_url} alt={profile.display_name} width={96} height={96} className="w-full h-full object-cover" />
+                ) : (
+                  <span className="font-heading text-2xl font-bold text-[#3b82f6]">
+                    {profile.display_name.charAt(0).toUpperCase()}
+                  </span>
+                )}
+              </div>
+
+              <div className="flex-1 min-w-0">
+                <h1 className="font-heading text-2xl md:text-3xl font-bold text-[#e8e8e8] leading-tight">
+                  {profile.display_name}
+                </h1>
+                <p className="font-body text-sm text-[#3b82f6] mt-0.5">@{profile.username}</p>
+
+                <div className="flex flex-wrap items-center gap-2 mt-3">
+                  {archetypeLabel && (
+                    <span className="font-body text-[10px] font-bold uppercase tracking-wider text-[#10b981] bg-[#10b981]/10 border border-[#10b981]/40 px-2 py-1 rounded-sm">
+                      {archetypeLabel}
+                    </span>
+                  )}
+                  {profile.expertise_level && (
+                    <span className="font-body text-[10px] font-bold uppercase tracking-wider text-[#a78bfa] bg-[#a78bfa]/10 border border-[#a78bfa]/40 px-2 py-1 rounded-sm">
+                      {profile.expertise_level}
+                    </span>
+                  )}
+                  {profile.role_title && (
+                    <span className="font-body text-[10px] font-bold uppercase tracking-wider text-[#9ca3af] bg-[#9ca3af]/10 border border-[#9ca3af]/30 px-2 py-1 rounded-sm">
+                      {profile.role_title}
+                    </span>
+                  )}
+                </div>
+
+                <div className="flex flex-wrap items-center gap-x-5 gap-y-1 mt-3 text-xs text-[#888]">
+                  {profile.company && <span>{profile.company}</span>}
+                  {location && <span>📍 {location}</span>}
+                  {profile.years_experience && <span>{profile.years_experience}y experience</span>}
+                  <span>Joined {fmtDate(profile.join_date)}</span>
+                </div>
+              </div>
+            </div>
+
+            {profile.bio && (
+              <p className="font-body text-sm text-[#bfbfbf] leading-relaxed mt-5 pt-5 border-t border-[#2a2a2a]">
+                {profile.bio}
+              </p>
+            )}
+
+            {profile.expertise_tags && profile.expertise_tags.length > 0 && (
+              <div className="flex flex-wrap gap-2 mt-4">
+                {profile.expertise_tags.map((tag) => (
+                  <span key={tag} className="font-body text-[11px] text-[#9ca3af] bg-[#222] border border-[#2a2a2a] px-2 py-0.5 rounded-sm">
+                    #{tag}
+                  </span>
+                ))}
+              </div>
+            )}
+          </div>
+
+          {/* Activity grid */}
+          <div className="grid grid-cols-1 lg:grid-cols-[2fr,1fr] gap-6">
+            <div>
+              <h2 className="font-heading text-lg font-bold text-[#e8e8e8] mb-3">
+                Threads started ({profile.thread_count})
+              </h2>
+              {threads.length === 0 ? (
+                <p className="font-body text-sm text-[#666] mb-6">No threads yet.</p>
+              ) : (
+                <ul className="space-y-2 mb-8">
+                  {threads.map((t) => (
+                    <li key={t.id} className="bg-[#1a1a1a] border border-[#2a2a2a] rounded-sm p-3 hover:border-[#3b82f6]/50 transition-colors">
+                      <Link href={`/forum/thread/${t.id}`} className="font-body text-sm font-semibold text-[#e0e0e0] hover:text-[#3b82f6] block">
+                        {t.title}
+                      </Link>
+                      <div className="flex items-center gap-3 mt-1 text-[11px] text-[#666]">
+                        {t.forum_categories?.name && <span>{t.forum_categories.name}</span>}
+                        <span>·</span>
+                        <span>{t.reply_count} replies</span>
+                        <span>·</span>
+                        <span>{t.view_count} views</span>
+                        <span>·</span>
+                        <time>{new Date(t.created_at).toLocaleDateString()}</time>
+                      </div>
+                    </li>
+                  ))}
+                </ul>
+              )}
+
+              <h2 className="font-heading text-lg font-bold text-[#e8e8e8] mb-3">
+                Recent replies
+              </h2>
+              {replies.length === 0 ? (
+                <p className="font-body text-sm text-[#666]">No replies yet.</p>
+              ) : (
+                <ul className="space-y-2">
+                  {replies.map((r) => (
+                    <li key={r.id} className="bg-[#1a1a1a] border border-[#2a2a2a] rounded-sm p-3">
+                      <Link href={`/forum/thread/${r.thread_id}`} className="font-body text-xs font-semibold text-[#3b82f6] hover:underline">
+                        {r.forum_threads?.title || "(thread)"}
+                      </Link>
+                      <p className="font-body text-sm text-[#bfbfbf] leading-relaxed mt-1 line-clamp-3">{r.body}</p>
+                      <div className="mt-1 text-[11px] text-[#666]">
+                        <time>{new Date(r.created_at).toLocaleDateString()}</time>
+                      </div>
+                    </li>
+                  ))}
+                </ul>
+              )}
+            </div>
+
+            <aside>
+              <div className="bg-[#1a1a1a] border border-[#2a2a2a] rounded-sm p-4 sticky top-4">
+                <h3 className="font-body text-xs font-bold uppercase tracking-wider text-[#888] mb-2">Profile facts</h3>
+                <dl className="text-sm space-y-2">
+                  <div><dt className="text-[#666] text-[11px] uppercase tracking-wider">Role</dt><dd className="text-[#cccccc]">{profile.role_title || "—"}</dd></div>
+                  {profile.company && <div><dt className="text-[#666] text-[11px] uppercase tracking-wider">Company</dt><dd className="text-[#cccccc]">{profile.company}</dd></div>}
+                  <div><dt className="text-[#666] text-[11px] uppercase tracking-wider">Threads</dt><dd className="text-[#cccccc]">{profile.thread_count}</dd></div>
+                  <div><dt className="text-[#666] text-[11px] uppercase tracking-wider">Replies</dt><dd className="text-[#cccccc]">{profile.reply_count}</dd></div>
+                  {profile.years_experience && <div><dt className="text-[#666] text-[11px] uppercase tracking-wider">Years in industry</dt><dd className="text-[#cccccc]">{profile.years_experience}</dd></div>}
+                  <div><dt className="text-[#666] text-[11px] uppercase tracking-wider">Member since</dt><dd className="text-[#cccccc]">{fmtDate(profile.join_date)}</dd></div>
+                </dl>
+              </div>
+            </aside>
+          </div>
+        </div>
+      </main>
+      <Footer />
+    </>
+  );
+}