# M16-GAP-00135 Status status: done task: action.select_by_type operator LOCAL_EXACT slice updated: 2026-08-20 America/New_York scope: Action Editor keyframe-type selection on `object:WebGapSelectByTypeObject`. evidence: - Blender marks frame 3 as BREAKDOWN, clears selection, and executes `bpy.ops.action.select_by_type(type="BREAKDOWN", extend=False)`. - Desktop and WASM/Main expose matching keyframe types and selected 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 BREAKDOWN selection; other keyframe types and extend behavior remain separate cases. nextTask: `M16-GAP-00136`