# M16-GAP-00263 Status

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

scope:

- The fixture contains one selected positive-X `WebGapArmatureSymmetrizeSource.L`
  bone and one unrelated unselected bone. Blender desktop runs
  `ARMATURE_OT_symmetrize(direction="NEGATIVE_X")`, producing the mirrored
  `WebGapArmatureSymmetrizeSource.R` bone and preserving the result through
  save/reopen.
- WASM/Main reads the same armature. The comparator confirms mirrored geometry,
  selection state, malformed-input rejection without Main mutation, and
  save/reopen.

evidence:

- Fixture generation, desktop checker, npm comparator, and direct comparator
  passed with exit code 0. Chromium-only policy was preserved and no
  Firefox/WebKit run was made.

nextTask: `M16-GAP-00264`