fix(sdk): include package files in the built wheel (#32)

[prashar32]

Closes #32.

Problem

pip install riskkernel (and installing the SDK by path, as examples/codebase-qa does) installed a package with no modules — import riskkernel raised ModuleNotFoundError. The wheel hatchling built contained only *.dist-info.

Cause

The SDK project lives in a repo subdirectory (sdks/python). Hatchling's default VCS-aware file selector lists tracked files with paths relative to the repo root (sdks/python/riskkernel/...), which don't match the project-root-relative packages = ["riskkernel"] include — so the build matched no files. make sdk-test didn't catch it because it runs against the source tree on PYTHONPATH, not an installed wheel.

Fix

One line in sdks/python/pyproject.toml:

[tool.hatch.build]
ignore-vcs = true

Hatchling now selects files from the filesystem. Verified: the wheel ships all 9 modules and imports cleanly (including the lazy adapters submodule).

$ pip wheel ./sdks/python -w /tmp/w
$ python -c "import zipfile,glob; print(len([n for n in zipfile.ZipFile(glob.glob('/tmp/w/riskkernel-*.whl')[0]).namelist() if n.endswith('.py')]))"
9
$ pip install /tmp/w/riskkernel-*.whl && python -c "import riskkernel; print('ok')"
ok

This is release-worthy on its own — suggest a fast v0.1.1.

Follow-up (separate)

Add a CI step that builds the wheel and imports riskkernel from the installed wheel (not source), so packaging regressions are caught — noted in #32.