Type Alias SignalsByWaitpoint 

pub type SignalsByWaitpoint<'a> = HashMap<&'a str, &'a [ResumeSignal]>;

Map from waitpoint_key → list of signals delivered to it. This is the shape [ff_suspension_current.member_map] deserialises into on the Postgres side — signals are keyed by their target waitpoint, so the evaluator can answer “did this waitpoint fire?” without a per-signal wp lookup.

Aliased Type

pub struct SignalsByWaitpoint<'a> { /* private fields */ }