# M16-GAP-00258 Status

status: done
task: armature.separate operator LOCAL_EXACT slice
updated: 2026-08-23 America/New_York

scope:

- The minimal fixture contains one selected bone and one unselected bone in a
  single armature. Blender desktop runs `ARMATURE_OT_separate`, producing an
  original armature with the retained bone and a separated armature with the
  selected bone, stable through save/reopen.
- WASM/Main reads both armature data-blocks from the same fixture. The
  comparator confirms desktop/WASM partition parity, malformed-input rejection
  without Main mutation, and save/reopen stability.

evidence:

- Fixture generation, desktop checker, npm comparator, direct comparator, and
  repeated checker execution passed. The second checker run is idempotent
  (`SKIPPED_ALREADY_APPLIED`); Chromium-only policy was preserved and no
  Firefox/WebKit run was made.

nextTask: `M16-GAP-00259`