cross-link: forum auto-link, NAB hub, sponsor strip, recent stories

Feature 3 — forum auto-linking
  Thread + reply bodies in /forum/thread/[id] now wrap company-name
  mentions with /manufacturers/<slug> links via a new client-side
  LinkifyPlainText component. Loads the directory list once per page
  (module-level promise cache), regex-scans each body, preserves
  whitespace, caps at 10 links per body to avoid clutter.
  CompanyMentionsHover mounted on the page so the same preview card
  pops on hover.
  Adds /api/public/companies/list — minimal { name, slug } directory
  feed, cached 10min.

Feature 4 — /nab-2026 live coverage hub
  New page aggregating every directory company with exhibits_nab=true.
  Three sections:
    - Coverage Partners — active advertisers exhibiting at NAB, larger
      tiles with emerald Sponsor border
    - Latest from the show floor — last 60 days of articles with NAB
      in the title, cinematic grid
    - All NAB 2026 exhibitors — alphabetical, capped at 200 with link
      to full /manufacturers directory
  Every company tile carries data-company-slug for hover previews.

Feature 5b — Sponsor logo strip on homepage
  New SponsorLogoStrip server component renders just above the footer
  on the homepage, showing logos of every current banner advertiser
  with a directory entry + logo. Each links to the manufacturer
  profile with the hover-card slug attribute.

Feature 5c — Recent coverage on manufacturer profiles
  /manufacturers/[slug] now includes a grid of the 6 most recent
  articles matching the company name in the title, with thumbnails.
  Renames the existing manufacturer_id-linked block to "Press
  releases" since it's a separate data source.

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

@@ -8,6 +8,8 @@ import AdImage from '@/components/AdImage';
 import { ADS_300X250, rotateAll } from '@/lib/ads';
 import { createClient } from '@/lib/supabase/client';
 import SidebarAdStack from "@/components/SidebarAdStack";
+import LinkifyPlainText from "@/components/LinkifyPlainText";
+import CompanyMentionsHover from "@/components/CompanyMentionsHover";
 
 // Inline ad slot inserted between forum replies every N posts.
 function InThreadAd({ adIndex }: { adIndex: number }) {
@@ -368,7 +370,9 @@ export default function ForumThreadPage() {
                     <span className="text-[#555] font-body text-xs">·</span>
                     <span className="text-[#555] font-body text-xs">{thread.view_count} views</span>
                   </div>
-                  <p className="text-[#d0d0d0] font-body text-sm leading-relaxed whitespace-pre-wrap">{thread.body}</p>
+                  <p className="text-[#d0d0d0] font-body text-sm leading-relaxed">
+                    <LinkifyPlainText body={thread.body} />
+                  </p>
                   <VoteButtons
                     targetType="thread"
                     targetId={thread.id}
@@ -408,7 +412,9 @@ export default function ForumThreadPage() {
                             <span className="text-[#555] font-body text-xs">·</span>
                             <span className="text-[#555] font-body text-xs">{timeAgo(reply.created_at)}</span>
                           </div>
-                          <p className="text-[#d0d0d0] font-body text-sm leading-relaxed whitespace-pre-wrap">{reply.body}</p>
+                          <p className="text-[#d0d0d0] font-body text-sm leading-relaxed">
+                            <LinkifyPlainText body={reply.body} />
+                          </p>
                           <VoteButtons
                             targetType="reply"
                             targetId={reply.id}
@@ -537,6 +543,7 @@ export default function ForumThreadPage() {
         </div>
       </main>
       <Footer />
+      <CompanyMentionsHover />
     </>
   );
 }