# M16-GAP-00156 Status

status: done
task: anim.channels_collapse operator LOCAL_EXACT slice
updated: 2026-08-21 America/New_York

scope:

- Action Editor `anim.channels_collapse` collapses all channels.

evidence:

- Blender desktop and WASM/Main preserve the same three location channels at frames 1, 3, and 5 after `all=true` collapse.
- Save/reopen is exact; malformed Blend input is rejected without Main mutation.
- Fixture generation, desktop checker, npm comparator, direct comparator, and artifact hashing passed.

nextTask: `M16-GAP-00157`