Type Alias LifecycleCacheState

LifecycleCacheState: "WARM" | "STALE" | "COLD"

Observable cache state, exposed via get_server_health.lifecycleCache and read by getLifecycleCacheStatus to surface warmup observability.

State	Meaning
`WARM`	Cache entry exists and is still within the CACHE_TTL_MS window
`STALE`	Cache entry exists but its TTL has expired (next request will rebuild)
`COLD`	No cache entry has ever been produced for this corpus size