Tatsh / deltona / 24928357997

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project: lift remove-trailing-commas walker into refactor library

Move the file walking and per-file rewrite logic out of the
remove-trailing-commas Click command and into deltona.refactor as a
new public async function remove_trailing_commas_in_paths. The
walker, repo-root finder, gitignore reader, and per-file rewriter
all run on anyio.Path so filesystem operations are non-blocking and
naturally async. The walker now descends directories with iterdir
and prunes whole subtrees that match exclusion patterns, instead of
expanding every entry under the start path with rglob and filtering
afterwards. This eliminates the multi-second lag previously seen on
projects with large excluded trees like .venv or node_modules.

When --no-format is not passed, the command now also gathers exclude
patterns from pyproject.toml (tool.yapfignore.ignore_patterns,
tool.ruff.exclude, tool.ruff.extend-exclude, tool.ruff.format.exclude)
and from ruff.toml / .ruff.toml (exclude, extend-exclude,
format.exclude) and feeds them to the walker as extra excludes,
matching the formatters' own scope.

Yarn format and yarn ruff:fix output is now suppressed by default;
passing --debug shows it. Debug logging traces every step of ignore
pattern construction (project root discovery, each pyproject/ruff
section, gitignore chain, final pattern count) and walker traversal
(descent, prune, skip, processing) so users can see exactly what was
considered and why something was dropped.

Add tomlkit as a base dependency for reading pyproject.toml and
ruff.toml.

Signed-off-by: Andrew Udvare <audvare@gmail.com>

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