articles: auto-link company mentions to manufacturer directory

When an article body is rendered, scan it for any company name in
bb.tracked_companies (directory_visible=true) and wrap the first
mention of each company in
  <a class="company-mention" data-company-slug="...">Name</a>
linking to /manufacturers/<slug>. Caps at 12 mentions per article so
heavy press-release lists don't get visually noisy.

Match rules:
- Word-boundary, case-insensitive
- Skips text already inside <a>, <script>, <style>, code/pre/headings
- Skips any element with data-no-autolink="true"
- Longest name wins on overlap (Sony Pictures beats Sony)
- One link per company per article (first occurrence)

Hover behavior: a new CompanyMentionsHover client component mounts once
per article page, listens globally for [data-company-slug] hovers, and
pops a floating card showing logo, name, 2-sentence bio, sponsor/NAB/IBC
badges, HQ city, 3 recent stories, and links to the full profile +
external website. Preview data fetched from new endpoint
  /api/public/companies/[slug]/preview
with a client-side cache keyed by slug.

Includes non-advertisers — any visible directory entry gets linked,
which is the point. If a company is *also* a current banner advertiser
on broadcastbeat, the hover card adds a green "Sponsor" badge.

Styling: dotted underline that becomes solid on hover, slightly bolder
weight, accent color on hover. Subtle so multi-mention paragraphs don't
look like a link-soup.

src/app/api/public/companies/[slug]/preview/route.ts

@@ -0,0 +1,74 @@
+import { NextResponse } from "next/server";
+import { createAdminClient } from "@/lib/supabase/admin";
+
+export const revalidate = 300;
+
+export async function GET(_req: Request, { params }: { params: Promise<{ slug: string }> }) {
+  const { slug } = await params;
+  if (!slug) return NextResponse.json({ error: "slug required" }, { status: 400 });
+
+  const svc = createAdminClient();
+  const { data: company, error } = await svc
+    .from("tracked_companies")
+    .select("id, slug, company_name, bio, logo_url, company_website, hq_city, hq_country, exhibits_nab, exhibits_ibc, featured, categories")
+    .eq("slug", slug)
+    .eq("directory_visible", true)
+    .maybeSingle();
+  if (error || !company) return NextResponse.json({ error: "not found" }, { status: 404 });
+
+  // Recent stories: title contains company name. Cap at 5, newest first.
+  const needle = String(company.company_name || "").trim();
+  let stories: any[] = [];
+  if (needle.length >= 3) {
+    const { data } = await svc
+      .from("wp_imported_posts")
+      .select("wp_slug, title, wp_published_at, featured_image")
+      .eq("status", "published")
+      .ilike("title", `%${needle.replace(/[%_]/g, "")}%`)
+      .order("wp_published_at", { ascending: false, nullsFirst: false })
+      .limit(5);
+    stories = (data || []).map((r: any) => ({
+      slug: r.wp_slug,
+      title: r.title,
+      date: r.wp_published_at,
+      image: r.featured_image,
+    }));
+  }
+
+  // Also check if they're a current advertiser on BB.
+  let isActiveAdvertiser = false;
+  try {
+    const advSvc = createAdminClient("adv");
+    const { count } = await advSvc
+      .from("active_advertisers_by_property")
+      .select("client_id", { count: "exact", head: true })
+      .eq("property", "broadcastbeat")
+      .eq("company_name_lower", needle.toLowerCase());
+    isActiveAdvertiser = (count || 0) > 0;
+  } catch { /* tolerate adv lookup failures */ }
+
+  // Trim bio to a couple sentences max for the popover.
+  const bioShort = (company.bio || "")
+    .split(/(?<=[.!?])\s+/)
+    .slice(0, 2)
+    .join(" ")
+    .slice(0, 320);
+
+  return NextResponse.json(
+    {
+      slug: company.slug,
+      name: company.company_name,
+      bio: bioShort,
+      logoUrl: company.logo_url,
+      website: company.company_website,
+      hq: [company.hq_city, company.hq_country].filter(Boolean).join(", "),
+      featured: !!company.featured,
+      exhibitsNab: !!company.exhibits_nab,
+      exhibitsIbc: !!company.exhibits_ibc,
+      categories: Array.isArray(company.categories) ? company.categories.slice(0, 4) : [],
+      isActiveAdvertiser,
+      stories,
+    },
+    { headers: { "Cache-Control": "public, s-maxage=300, stale-while-revalidate=600" } },
+  );
+}