workinf_Blender_Wasm/docs/status/M16-GAP-00203.md

M16-GAP-00203 Status

status: done task: anim.replace_action_new operator LOCAL_EXACT slice updated: 2026-08-22 America/New_York

scope:

• The minimal fixture has two objects using WebGapAnimReplaceNewOldAction. Desktop runs ANIM_OT_replace_action_new with the old action session UID; Blender creates a new empty action and assigns it to both users.
• The old action remains unlinked with its original channels. WASM/Main preserves that visible old-action evidence; the empty replacement action is intentionally not exposed as an animation entry.

evidence:

• Desktop evidence records poll=true, FINISHED, ACTION_REPLACED_WITH_NEW, the new action assignment, and exact save/reopen. Repeated checker runs preserve the initial evidence and fixture hash.
• WASM/Main compares the unlinked old action, preserves it across save/reopen, and rejects malformed Blend input without Main mutation.
• Fixture generation, desktop checker, npm comparator, direct comparator, and task-context checks passed. Chromium-only policy was preserved; no Firefox/WebKit run was made.

nextTask: M16-GAP-00204