- docs/ROUTER.md + docs/ROUTER.ru.md: what the semantic router does, hosted vs self-hosted, config, API contract, pricing, and the LAUNCH1 $1 Starter promo - README (EN+RU): "The router (allaigate)" section with the promo callout Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>