openplanr 2.2.0

Minor Changes

• Add the storage layer for the planr:sprint skill: openplanr sprint refinement <id> --data validates a refinement document, writes .planr/sprints/<id>/refinement.{json,md} and fills the sprint's ## Tasks with one checkbox per selected item grouped by batch; openplanr sprint diff compares two runs; openplanr sprint apply writes the approved status changes (optionally as one chore(planr): refine backlog for <id> commit); openplanr sprint close records leftovers. Sprints gain releaseCut, capacityDays, refinedAt and closedAt; the sprint status vocabulary is planned, active, closed; openplanr status reports the active sprint with its cut and progress; graph readers skip sprints/SPRINT-NNN/ note directories.