# M16-GAP-00128 Status

status: done
task: action.mirror operator LOCAL_EXACT slice
updated: 2026-08-20 America/New_York

scope: Action Editor X-axis mirror operation on `object:WebGapMirrorObject`.

evidence:

- Blender selects all three location channels and executes `bpy.ops.action.mirror(type="XAXIS")`; all keyframe values are negated.
- Desktop and WASM/Main expose matching frames, values, and selection flags; save/reopen is exact.
- Malformed Blend input is rejected without mutating Main animation data.
- Generator, desktop checker, npm comparator, direct comparator, context handoff, and governance exit 0.

knownRisk: This slice covers X-axis value mirroring; current-frame and marker-based time mirroring remain separate operator cases.

nextTask: `M16-GAP-00129`