Package Virne CLI and configs - #55

Summary

• add an installed virne console command and python -m virne entry point while retaining python main.py compatibility
• move the unchanged Hydra defaults into virne/configs/ and include every YAML preset in wheels and source distributions
• make top-level package exports lazy so virne --version does not load the full PyTorch and solver stack
• build and install the wheel in CI before testing its metadata, resources, help/config output, and a ten-request experiment
• update the README and documentation to make the standard PyPI flow primary and keep the source installer for explicit CPU/CUDA selection

Why

The repository declared version 1.0.0, but its wheel did not include the top-level runner or settings/ directory and exposed no console script. Uploading that artifact would therefore install the library without a self-contained benchmark command. The only public PyPI release remains the outdated 0.5.0 package.

User impact

After the separately approved 1.0.0 release, users can run:

python -m pip install virne
virne solver.solver_name=nrm_rank

Source users can continue to use python main.py, and accelerator-specific installs can continue to use install.sh.

Validation

• 263 tests passed on Python 3.12 and Python 3.13
• fresh wheel installs passed pip check, metadata/resource checks, virne --help, virne --version, and python -m virne --cfg job
• the final wheel completed the ten-request nrm_rank smoke experiment on both Python versions
• all 13 moved YAML files are byte-for-byte identical to their previous source files
• wheel and sdist builds succeeded and both passed twine check
• strict Sphinx build passed with warnings treated as errors
• focused Ruff checks, warning-as-error compilation, uv lock --check, shell syntax, and diff checks passed

Release boundary

This PR does not publish to PyPI. Trusted Publishing configuration, the release workflow, and the immutable 1.0.0 upload remain a separate approval step after this packaging PR is reviewed.