products/[slug]: re-add Codex to /prediction-markets pill

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

@@ -568,20 +568,23 @@ export default async function ProviderPage({
                       jump from a venue/data provider product page to the
                       PM coverage hub. Hard-coded slug list, same shape
                       as the HL companion treatment elsewhere. */}
-                  {/* Prediction-market venues only. Mobula + Codex were
-                      previously in this list because they surface PM
-                      pricing feeds inside their APIs, but their /products
-                      pages read primarily as data-API profiles and the
-                      "View on /prediction-markets" pill looked misleading
-                      alongside their DEX / aggregator / RPC benches.
-                      Removed 2026-07-26. */}
+                  {/* Prediction-market pill: 6 native venues + Codex.
+                      Codex is the aggregator measured on pm-data-freshness
+                      alongside Polymarket + Kalshi as the third data
+                      provider indexing PM feeds; retaining the pill lets
+                      readers jump from /products/codex to the PM hub
+                      where its freshness ranking surfaces. Mobula was
+                      previously in this list but does not currently
+                      appear on any PM bench and the pill read as a
+                      routing bug on its data-API profile. */}
                   {(
                     p.slug === "polymarket" ||
                     p.slug === "kalshi" ||
                     p.slug === "limitless" ||
                     p.slug === "manifold" ||
                     p.slug === "myriad" ||
-                    p.slug === "predexon"
+                    p.slug === "predexon" ||
+                    p.slug === "codex"
                   ) && (
                     <>
                       <span className="text-ink-faint"> · </span>