♻️ Streamline ROMEO kernels and ship MIT notice with binaries

[vanandrew]

Summary

Two related but distinct cleanups on the ROMEO port. Split into separate commits so either can be reverted in isolation.

:recycle: Streamline weight + voxel_quality kernels

• weights.h — calculate_weights_romeo_impl rewritten as a single (k, j, i) pass over voxels. Boundary edges are skipped by construction (i+1<nx, j+1<ny, k+1<nz) instead of being computed then zeroed in a trailing pass. The masked_mag full-volume copy is replaced by an inline mag_at lambda — no shadow buffer. The dead maxmag block left over for unported flags 5-6 is gone.
• voxel_quality.h — the four full-volume passes (forward sum + three backward axis sweeps + divide-by-6) are fused into one (k, j, i) loop with the same left-to-right associativity as the original.

Per-edge FP arithmetic is unchanged, so the ROMEO goldens remain bit-exact. All 207 tests pass.

:wrench: Ship ROMEO MIT notice with binary distributions

include/romeo/ is a port of MIT-licensed code, so the notice has to travel with anything binary, not just the source tree. Today it travels with the headers (sdist / git checkout fine) but not with wheels or the standalone wk-* bundles.

• pyproject.toml: declare license-files = ["LICENSE", "include/romeo/LICENSE"] (PEP 639). Verified via uv build --sdist — PKG-INFO emits both files as License-File: entries, so wheels also carry them under *.dist-info/licenses/.
• packaging/pyinstaller/build_bundle.py: drop both LICENSE files into a LICENSES/ directory inside each standalone bundle.
• bundle_README.md: point users at LICENSES/.

Dockerfile is unchanged — ADD . /opt/warpkit already ships both notices in the image.

Test plan

• uv sync --group dev --reinstall-package warpkit — clean rebuild
• uv run pytest -q — 207/207 pass
• uv build --sdist — sdist builds, License-File: metadata for both files present in PKG-INFO
• CI wheel matrix (cp311–cp314 × linux/macos)
• Spot-check a built wheel for *.dist-info/licenses/include/romeo/LICENSE
• Next standalone-binary release: confirm LICENSES/warpkit.LICENSE and LICENSES/ROMEO.LICENSE land inside the bundle zip

🤖 Generated with Claude Code

[Copilot]

Pull request overview

This PR modernizes the ROMEO C++ port by reducing redundant full-volume passes in the weight/voxel-quality kernels, and ensures ROMEO’s upstream MIT notice is included in binary distributions (wheels + PyInstaller bundles) alongside warpkit’s license.

Changes:

• Add PEP 639 license-files metadata so wheels include both LICENSE and include/romeo/LICENSE.
• Add bundling of both license notices into standalone PyInstaller bundles under LICENSES/ and document their location.
• Refactor ROMEO weights and voxel_quality kernels to fuse/streamline passes while preserving intended boundary behavior via loop guards.

Reviewed changes

Copilot reviewed 5 out of 5 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
pyproject.toml	Adds PEP 639 license-files to ship ROMEO + warpkit license texts in wheels/sdists.
packaging/pyinstaller/build_bundle.py	Copies both license files into LICENSES/ within standalone bundles.
packaging/pyinstaller/bundle_README.md	Documents where bundled licenses live for end users.
include/romeo/weights.h	Rewrites weight computation into a single voxel-order pass and removes shadow buffers/trailing boundary zeroing.
include/romeo/voxel_quality.h	Fuses multiple sweeps into a single pass computing forward+backward contributions per voxel.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 95.42%. Comparing base (cb14414) to head (7f8eddf).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

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  Coverage   95.42%   95.42%           
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  Files          15       15           
  Lines        1071     1071           
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  Hits         1022     1022           
  Misses         49       49           

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