Migrate from Poetry to uv

[BrianPugh]

Replace Poetry/poetry-dynamic-versioning with uv as the package manager and setuptools + setuptools-scm + Cython as the build backend:

• pyproject.toml: PEP 621 [project] metadata, PEP 735 [dependency-groups], and [tool.uv] cache-keys so uv sync rebuilds the Cython extension whenever its sources change.
• build.py -> setup.py (same extension config); add MANIFEST.in for sdists.
• Version derived from git tags via setuptools-scm, exposed at runtime through importlib.metadata.
• bootstrap installs uv instead of Poetry; Cython support is now wired by default and stripped when declined.
• CI: astral-sh/setup-uv with locked syncs; lint/docs split out of the test matrix with cancel-in-progress concurrency; PyPI Trusted Publishing (OIDC) replaces PYPI_TOKEN; wheel builds gated to compiled-code changes on PRs; native ubuntu-24.04-arm runners replace QEMU for aarch64 wheels; lightweight pre-commit hooks move to pre-commit.ci.
• Support window bumped to Python 3.10-3.14 (cibuildwheel v3.2).
• Dependabot: uv + github-actions ecosystems with grouped minor/patch PRs.
• Dockerfile/ReadTheDocs converted to uv; .dockerignore no longer ships the local venv and build artifacts.

Claude-Session: https://claude.ai/code/session_01UarJmE1ctKM1J5U8oSMVEY

[Copilot]

Pull request overview

This PR migrates the template from Poetry/poetry-dynamic-versioning to uv for dependency management and to a setuptools + setuptools-scm + Cython build backend, updating developer workflows and CI/CD to match.

Changes:

• Replace Poetry-based packaging with PEP 621/735 metadata in pyproject.toml, setup.py for the Cython extension, and versioning via setuptools-scm + importlib.metadata.
• Update automation (GitHub Actions, Dependabot, pre-commit, bootstrap, Docker, ReadTheDocs) to use uv and modernize release publishing (OIDC / trusted publishing).
• Remove Poetry artifacts and adjust docs/readme for the new workflow and updated Python support window.

Reviewed changes

Copilot reviewed 17 out of 20 changed files in this pull request and generated 4 comments.

Show a summary per file

File	Description
setup.py	Adds setuptools-based Cython extension build configuration.
README.rst	Updates template documentation to reference uv, setuptools-scm, and trusted publishing.
pythontemplate/init.py	Switches runtime version lookup to importlib.metadata.
pyproject.toml	Migrates to PEP 621/735 metadata; switches build backend to setuptools + setuptools-scm + Cython and configures uv.
poetry.lock	Removes Poetry lockfile.
MANIFEST.in	Ensures Cython/C sources are included in sdists.
docs/source/Installation.rst	Updates installation/dev instructions for uv and Python >=3.10.
Dockerfile	Switches container build to use uv and a newer Ubuntu base image.
build.py	Removes Poetry-era build script.
bootstrap	Updates bootstrap flow to install/use uv and adjusts Cython opt-in/out behavior.
.readthedocs.yaml	Updates RTD build to use uv and newer build image/tooling.
.pre-commit-config.yaml	Adds uv lock hook and configures pre-commit.ci behavior.
.gitignore	Updates ignored files for uv and wheelhouse artifacts.
.github/workflows/tests.yaml	Reworks CI to use uv (locked sync), splits lint/docs from test matrix, adds concurrency control.
.github/workflows/deploy.yaml	Switches deploy workflow to uv build/publish and OIDC permissions.
.github/workflows/build_wheels.yaml	Updates cibuildwheel config, adds concurrency and PR-path gating, modernizes build matrix.
.github/dependabot.yml	Migrates Dependabot to uv + github-actions ecosystems with grouping.
.github/contributing.md	Updates contributor docs to use uv commands.
.dockerignore	Stops shipping local venv/build artifacts into Docker context and ignores common caches/artifacts.

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