slice 4: accent palette refinement — blue → teal

Replace the four accent-family hex codes site-wide with the teal palette
(keeps the dark theme; only swaps the accent family, not the dark base):

  #3b82f6 (accent primary CTA)   → #5B7C8D  (teal)        [839×]
  #2563eb (accent-dark / hover)  → #4A6473  (darker teal) [44×]
  #60a5fa (info link, lighter)   → #8FB0C3  (mid teal)    [68×]
  #1e3a5f (accent-muted bg)      → #2F4F5F  (navy)        [44×]

tailwind.config.js tokens updated to match (accent/accent-dark/accent-muted).
Sweep also covers tailwind.css. 108 files touched. The dark base (#0d0d0d,
#111, #161616, #1a1a1a etc.) is intentionally untouched.

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

src/app/show-coverage/page.tsx

@@ -106,7 +106,7 @@ function EventCard({ e }: { e: Row }) {
     <li>
       <Link
         href={`/show-coverage/${e.slug}`}
-        className="block p-5 rounded border border-[#252525] hover:border-[var(--color-text-info,#60a5fa)] bg-[#0b0f17] transition-colors"
+        className="block p-5 rounded border border-[#252525] hover:border-[var(--color-text-info,#8FB0C3)] bg-[#0b0f17] transition-colors"
       >
         <div className="flex items-start justify-between gap-3">
           <h3 className="font-serif text-xl font-semibold">{e.name}</h3>
@@ -120,7 +120,7 @@ function EventCard({ e }: { e: Row }) {
           {e.url && (
             <>
               {" · "}
-              <span className="text-[var(--color-text-info,#60a5fa)]">{new URL(e.url).hostname.replace(/^www\./, "")}</span>
+              <span className="text-[var(--color-text-info,#8FB0C3)]">{new URL(e.url).hostname.replace(/^www\./, "")}</span>
             </>
           )}
         </div>