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v0.4.19

v0.4.19 — substrate fingerprint columns + geom kernel + ifcfast.clash()
@EdvardGK EdvardGK tagged this 31 May 02:41 
Highlights:

* New `centroid_xyz` / `vertex_count` / `triangle_count` columns on
  `instances.parquet` — Phase 1a of the federated-model clash-control
  feature. Lets agents compose cross-model duplicate detection and
  broad-phase clash candidate filtering as pure DuckDB queries against
  the substrate. Cache schema bumped 4 -> 5.
* New `ifcfast.clash(bundle_dir, tolerance_m=0.0, ...)` Python
  primitive. Reads the substrate, broad-phases via parry3d AABB
  overlap, narrow-phases candidate pairs as true mesh-mesh
  intersection / distance, writes `clashes.parquet`. Tolerance and
  output are always in metres regardless of source file linear unit.
* New `geom` kernel module (parry3d 0.17 + nalgebra 0.33) — engine
  layer for the clash work and the upcoming cut-openings / OOBB /
  PCA features. Foundation, not a one-off.
* New `ifcfast-clash BUNDLE_DIR [--tolerance N]` binary mirroring
  the Python entry.
* Substrate parquet files now carry `ifcfast.unit_scale` and
  `ifcfast.version` as parquet schema metadata. Backwards-compatible.
* Wheel default features now include `bundle`, `geom`, and `clash`
  so the substrate writer and clash engine work out of the box on
  `pip install ifcfast`.

See CHANGELOG.md for the full diff and AGENTS.md for the
substrate-output + narrow-phase-clash sections.
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