pub const HEARTBEAT_INTERVAL_ENV: &str = "ANODIZER_HEARTBEAT_INTERVAL_MS";Expand description
Env override for the heartbeat cadence, in milliseconds. The test hook: the
suite sets a few-ms interval so a heartbeat fires without a 30s wait. 0
disables heartbeats entirely; a malformed value degrades to the default
(heartbeats are presentation, never worth failing a run over).