False once the alert has fired (one-shot) or was disabled by the host.
Trigger semantics — see AlertCondition.
Stable id assigned on creation (a_<n>), or the host-supplied one.
OptionalmessageOptional human-readable note delivered to the onAlert callback.
Price level the alert watches.
A configured price alert.
activeis the one-shot gate: a fired alert is flipped tofalseso it never re-triggers on subsequent ticks until the host explicitly re-arms it (AlertManager.setActive(id, true)).