# M16-GAP-00087 Status

status: done
task: PARTICLE_INSTANCE modifier LOCAL_EXACT slice
updated: 2026-08-20 America/New_York

scope: Mesh PARTICLE_INSTANCE modifier stack exposure for `mesh:WebGapParticleInstanceMesh`.

evidence:

- Desktop fixture exposes `WebGapParticleInstance` as PARTICLE_INSTANCE type code 20; save/reopen is exact.
- WASM/Main exposes PARTICLE_INSTANCE type code 20 and base metadata parameters on the mesh scene node.
- Malformed Blend input is rejected without mutating Main.
- Generator, npm comparator, and direct comparator exited 0.

knownRisk: Particle source binding and instance evaluation remain unavailable; this slice covers modifier stack transport and base metadata.

nextTask: `M16-GAP-00088`