Vercel log-drain setup: Elazar greenlit (2026-06-12) true 24h+ runtime-log retention (currently logs are point-in-time only via Vercel MCP). Scope: pick drain destination (log service/endpoint), configure Vercel log-drain, implementer is infra (nw-whey/nw-venus) not coder. PM owes Elazar the concrete scoped plan before dispatch.