shipped · Medium priority

Minecraft Player Page Migration Telemetry

Player profile pages emit source and timing headers for Go-first profile fetches, PHP fallback use, prerender time, total render time, payload size, and peak memory. Automatic Go renderer outcomes report to a loopback-only service endpoint and appear in private aggregate stats as real sampled successes, safe PHP fallbacks, observer outcomes, average fetch time, and sanitized fallback reasons. These anonymous aggregates persist atomically across service restarts; no player identity, address, user agent, request payload, or rollout secret is retained. Command Center checks the canonical sampled route, validates indexability and parity markers, warns on fallback or persistence failure, and shows the evidence gate required before cohort promotion.