# M16-GAP-00131 Status status: done task: action.previewrange_set operator LOCAL_EXACT slice updated: 2026-08-20 America/New_York scope: Action Editor selected-key preview range on `object:WebGapPreviewRangeObject`. evidence: - Blender executes `bpy.ops.action.previewrange_set`; the scene stores preview range `1..5` with preview enabled. - Reader exposes `scene.previewRange`; desktop and WASM/Main match, and save/reopen is exact. - Malformed Blend input is rejected without mutating Main scene state. - Generator, rebuilt WASM, desktop checker, npm comparator, direct comparator, context handoff, and governance exit 0. knownRisk: The Action Editor context computes the selected extent as the full 1..5 range in this background fixture; alternate channel-selection contexts remain separate cases. nextTask: `M16-GAP-00132`