hotfix(seo): bundle 3 SEO 404 fixes to main (alternatives + composite slug + ton→gram scope) - #753
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June 26, 2026 15:28
…dead compare pair Two SEO regressions feeding 404s into Google's crawl: 1. /products/<slug> for perp/PM venues without an alternatives YAML (lighter, manifold, vertex, grvt, ostium, variational, pacifica, aevo, edgex, paradex, extended, myriad, limitless, aster) hardcoded a /alternatives/<slug> footer link in PmVenueSection and PerpVenueSection. Now gated on loadAlternativeSlugs() membership so only venues with an actual YAML emit the link. 2. /compare hub rendered jupiter-vs-raydium even though raydium has no bench appearances, so /compare/jupiter-vs-raydium 404s downstream. Pre-filter COMPARE_PAIRS against getProvider() so dead pairs disappear from the list and the JSON-LD ItemList until both sides resolve. Plus a defensive guard in buildAlternativesReverseMap() so the emitted alt.slug is always a known live YAML, even if the alt list source ever changes shape.
Drop 15 anonymous 0x... HL builder slugs and 5 dead composite slugs from /products listing, sitemap and individual /products/<slug> routes. DEAD_COMPOSITE_SLUGS now lives in providers.ts as the single source of truth; related-providers.ts imports it. Bumps providers cache key v3->v4.
The catch-all /benchmarks/:slug/ton redirect fired on every bench, including aggregator-head-lag/gas-estimation/rpc-capabilities/etc that have no per_chain_explainer for gram. Result: 308 chain into 404, which Ahrefs + Google flag as a soft-404 anti-pattern. Now explicit per-bench: l1-finality, network-fees, wallet-labels-coverage.
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Summary
Cherry-pick bundle of 3 SEO-only fixes from dev → main, so prod ships the 404 cleanup without dragging the rest of dev's accumulated work.
`fix(seo): drop dead /alternatives links from perp/PM venue footers + dead compare pair` (was fix(seo): drop dead /alternatives + jupiter-vs-raydium compare #749 on dev)
`fix(seo): blacklist hex builder slugs and shared composite filter` (was fix(seo): blacklist hex builder + shared composite filter #747 on dev)
`fix(seo): scope ton→gram redirect to benches with gram explainer` (supersedes hotfix(seo): scope ton→gram redirect to benches with gram explainer #750)
Closes #750. PRs #747 + #749 remain open against dev for staging record.
Test plan after `vercel --prod`