Advance M16 modifier parity and context governance

docs/status/M16-GAP-00081.md

@@ -0,0 +1,18 @@
+# M16-GAP-00081 Status
+
+status: done
+task: MESH_TO_VOLUME modifier LOCAL_EXACT slice
+updated: 2026-08-20 America/New_York
+
+scope: Volume-object MESH_TO_VOLUME modifier stack exposure for `object:WebGapMeshToVolumeObject`.
+
+evidence:
+
+- Desktop fixture exposes `WebGapMeshToVolume` as MESH_TO_VOLUME type code 58; save/reopen is exact.
+- WASM/Main exposes MESH_TO_VOLUME type code 58 and base metadata parameters on the volume scene node.
+- Malformed Blend input is rejected without mutating Main.
+- Generator, npm comparator, and direct comparator exited 0.
+
+knownRisk: Mesh-to-volume conversion evaluation remains unavailable; this slice covers modifier stack transport and base metadata.
+
+nextTask: `M16-GAP-00082`