Module sprint 

Sprint model.

Pure logic for sprint IDs, goals, schedules, capacity, and state transitions. The model has no I/O dependency; crate::storage persists it and callers supply timestamps.

Structs

Sprint

A sprint that groups PBIs into a time-boxed work period.

SprintCapacity

Sprint capacity calculation results.

SprintId

Stable identifier for the sprint.

Enums

SprintState

Sprint state. Transitions are allowed only from planned to active to closed.