# M16-GAP-00280 Status

status: done
task: asset.mark_single operator LOCAL_EXACT slice
updated: 2026-08-24 America/New_York

scope:

- The minimal fixture contains one marked object, `WebGapAssetMarkSingleObject`,
  with stable author, description, and `operator-mark-single` tag metadata.
  Blender desktop observes `asset.mark_single` as `poll=false`, records
  `CANCELLED`, and confirms no Main mutation. Save/reopen preserves the
  metadata exactly.
- WASM/Main reads the same fixture through the existing Scene IR asset metadata
  path. The comparator confirms the object metadata matches desktop, survives
  save/reopen, and rejects malformed input without changing Main.

evidence:

- Fixture generation, desktop checker, npm generated-gap comparator, direct
  comparator, and task-context handoff checks passed with exit code 0.
  Chromium-only policy was preserved and no Firefox/WebKit run was made.
- This task adds only the `mark_single` fixture/checker/comparator evidence;
  the reader, Scene IR protocol, and WASM artifacts are the already verified
  asset metadata path from M16-GAP-00279.

nextTask: `M16-GAP-00281`