home: hide dates on Featured posts site-wide; remove BB-AI trends sidebar

Dates
- FeaturedBentoFromDb hero + 4-up rail no longer render `ago(wp_published_at)`.
  The whole component renders only Featured-category posts (filter is
  category ILIKE 'featured'), so dropping the date display globally inside
  it satisfies the "Featured posts have no date" requirement.
- /gear and /technology category cards: wrap the existing `{article.date}`
  output in `{article.category !== "Featured" && ...}` so only non-Featured
  posts continue to show their publish date.
- All other category landing pages, /news/<slug> detail, ArticleFeed, and
  LiveWireTicker either don't render a visible article date or only use it
  for SEO/structured-data fields (kept).

Trends sidebar
- Remove `BB AI · detected trends` block from the homepage (between
  ArticleFeed and NewsletterSignup). Drop the unused import and delete
  the orphaned TrendsSidebar.tsx component file. The detect-trends data
  fetch and `bb_pulse_dot` mini-widget are gone from the page; nothing
  else referenced them.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src/components/FeaturedBentoFromDb.tsx

@@ -106,8 +106,6 @@ export default async function FeaturedBento() {
             )}
             <div className="mt-4 flex flex-wrap items-center gap-3 text-[11px] font-mono text-[#9ca3af]">
               <span>{hero.author_name || "Broadcast Beat"}</span>
-              <span>·</span>
-              <span>{ago(hero.wp_published_at)}</span>
               <span aria-hidden="true" className="text-[var(--color-text-info,#60a5fa)] ml-2">→ Read full story</span>
             </div>
           </div>
@@ -136,9 +134,6 @@ export default async function FeaturedBento() {
               <h4 className="font-serif text-sm leading-tight text-[#e5e7eb] group-hover:text-[var(--color-text-info,#60a5fa)] line-clamp-3">
                 {r.title}
               </h4>
-              <div className="text-[10px] font-mono text-[#6b7280] mt-2">
-                {ago(r.wp_published_at)}
-              </div>
             </div>
           </Link>
         ))}