chore(prod): cherry-pick perp Sprint 3 fixes (product pages + funding cohort copy)

benchmarks/perp-funding-stability.yml

@@ -4,7 +4,7 @@ slug: perp-funding-stability
 number: "043"
 title: Perp DEX funding stability, 7-day stddev of ETH funding ranked
 seo_title: "Perp DEX funding stability 2026: ETH funding stddev across 12 venues ranked"
-seo_description: "Live 7-day standard deviation of ETH perpetual futures funding rate in bps across 12 major venues. Lower means more stable funding for carry traders."
+seo_description: "Live 7-day standard deviation of ETH perpetual futures funding rate in bps across 12 major venues (Hyperliquid plus 11 CEX-style perp books). Lower means more stable funding for carry traders."
 subtitle: 7-day standard deviation of ETH funding rate, in basis points per 24h, across the Mobula funding cohort. Lower means funding stays in a tight band, the carry trader's preferred signal.
 category: Trading
 status: live
@@ -44,7 +44,7 @@ methodology:
  - "Source. Same upstream as perp-funding: each venue's public funding endpoint polled every 60 seconds, normalized to bps per hour and per 24h hold, sign preserved."
  - "Metric. stddev_over_time(perp_venue_funding_24h_bps{asset=\"ETH\"}[7d]) per venue. The 7d window smooths intraday noise but reacts to regime shifts within a week."
  - "Sign handling. The underlying series is signed (positive means longs pay). Stability measures the swing, so the ranking uses the unsigned stddev. Average direction and level are the perp-funding bench."
- - "Cohort. 12 venues: Hyperliquid, Binance, Bybit, OKX, dYdX v4, Paradex, Aster on the CEX-plus-orderbook side; Drift, Vertex, EdgeX, Extended and Aevo on the onchain-perp side. All quote ETH funding with documented intervals."
+ - "Cohort. 12 venues from the Mobula funding aggregator: Hyperliquid (onchain), Binance, Bybit, OKX, Gate, Lighter, KuCoin, MEXC, Bitget, Kraken, Coinbase, Deribit. All publish normalized hourly ETH funding."
  - "Cadence. The upstream funding harness polls every 60 seconds; Prometheus scrapes every 30 seconds. The 7 day stddev refreshes on every scrape."
  - "Failures. A venue whose upstream funding feed errors keeps its last gauge value; the perp_venue_health gauge drops to 0 and the leaderboard tags the row stale."
  - "Reproducibility. The harness emits perp_venue_funding_24h_bps with labels venue and asset; the bench query is the stddev over 7d on that series with asset=ETH pinned."

src/app/perps/page.tsx

@@ -24,7 +24,7 @@ import { SITE } from "@/data/site";
  */
 
 const DESCRIPTION =
- "Live volume, open interest, fees, all-in cost and funding rate across 15 perpetual DEXes. Reproducible methodology, refreshed every minute, sources public.";
+ "Live volume, open interest, fees, all-in cost and funding rate across 16 perpetual DEXes. Reproducible methodology, refreshed every minute, sources public.";
 
 export const metadata: import("next").Metadata = pageMetadata({
  path: "/perps",

src/data/provider-registry.ts

@@ -1304,7 +1304,7 @@ export const PROVIDER_REGISTRY: Record<string, ProviderRegistryEntry> = {
  twitter: "@DriftProtocol",
  },
  vertex: {
- url: "https://vertexprotocol.com",
+ url: "https://www.nado.xyz",
  description:
  "Arbitrum perp and spot orderbook DEX with off-chain matching and on-chain settlement. Migrating to Ink Foundation.",
  twitter: "@vertex_protocol",

src/lib/providers.ts

@@ -344,6 +344,29 @@ async function buildProviders(): Promise<ProviderProfile[]> {
  });
  }
 
+ // Seed stub profiles for cohort venues that don't yet have a bench
+ // appearance. Without this, /products/<slug> renders 404 for every
+ // venue the harness tracks but no bench specifically ranks (e.g. the
+ // perp cohort venues drift, edgex, extended, aevo, pacifica,
+ // variational, ostium, grvt have no row in perp-fees or perp-funding,
+ // so getProvider() returned undefined). The stub carries name + type
+ // only; appearances stays empty so the product page still renders the
+ // PerpVenueSection from the cohort harness without falsely claiming
+ // bench coverage. PM cohort venues stay unaffected because every PM
+ // venue already appears in at least one PM bench.
+ for (const v of PERP_VENUE_SEED) {
+ const key = v.slug.toLowerCase();
+ if (byKey.has(key)) continue;
+ byKey.set(key, {
+ slug: v.slug,
+ name: v.name,
+ type: "protocol",
+ appearances: [],
+ wins: 0,
+ categories: [],
+ });
+ }
+
  const profiles = Array.from(byKey.values());
  profiles.sort((a, b) => {
  if (a.wins !== b.wins) return b.wins - a.wins;
@@ -355,6 +378,21 @@ async function buildProviders(): Promise<ProviderProfile[]> {
  return profiles;
 }
 
+// Cohort venues that should have a /products/<slug> page even when no
+// bench in benchmarks/ ranks them. Imported as a flat list here to
+// avoid a build-time cycle with the perp-stats module.
+const PERP_VENUE_SEED = [
+ { slug: "drift", name: "Drift" },
+ { slug: "vertex", name: "Vertex" },
+ { slug: "edgex", name: "EdgeX" },
+ { slug: "extended", name: "Extended" },
+ { slug: "aevo", name: "Aevo" },
+ { slug: "pacifica", name: "Pacifica" },
+ { slug: "variational", name: "Variational" },
+ { slug: "ostium", name: "Ostium" },
+ { slug: "grvt", name: "GRVT" },
+];
+
 /** Cross-request cache. The expensive part isn't `getBenchmarks()`
  * itself (already wrapped in unstable_cache) but the per-provider
  * ranking + wins + per-chain aggregation post-processing on top. A 60