Mirror the TVM setup (apache/tvm#18809): a minimal GHA workflow that
runs `uv sync --group lint` plus `pre-commit/action`. Pre-commit is
rewritten around ruff (check + format), replacing the previous
isort/black/mypy/pylint/cmake-format stack, and gains yamllint,
taplo, check-yaml, and check-toml. The corresponding Jenkins Lint
stage, the ci/task/{isort,black,mypy,pylint,clang-format}.sh scripts,
and .pylintrc are removed. pyproject.toml grows a [tool.ruff] section
(select E/F/I/UP/RUF, line-length 100, py39 target) and a
[dependency-groups] lint entry; the stale isort/black/mypy/pylint
tool tables are dropped.
To get the codebase green under the new ruler, existing UP006/UP035/
UP045/E501/RUF001/RUF002/E402/F821 violations are grandfathered via
inline `# noqa`, so new code in those forms is still flagged. Real
issues surfaced by the new rules are fixed directly: E741 renames
(ambiguous `l`/`O`), F841 unused locals, E722 bare `except`, RUF012
ClassVar annotations for mutable class defaults, RUF013 explicit
`Optional[...]`, and RUF005 iterable unpacking.
With pylint and mypy gone from CI, this also strips all `# pylint:
disable/enable` and `# type: ignore` directives from Python sources
(PEP 484 `# type: <expr>` comments and `# fmt: off/on` are
preserved), and runs the resulting files through ruff-format.
Ruihang Lai
d1ea69a872