Handle linting better #48

In #47, unpinned linting tied to CI passing caused issues as described here..

To address this, we should do the following:

• Pin the Ruff version to 0.16 in the pyproject
• Change the pre-commit hook to use repo: local and use uv run --extra ruff check --force-exclude. This uses the pyproject ruff version as a single source of truth, fixing the current mismatch between the hook and the pyproject. (Adding --force-exclude protects the hook from causing unexpected errors while not costing any additional complexity)
• No update to Actions for this ... it will install ruff from the pyproject file still.

With this approach, a developer can do uv pip install -e .[dev] to do independent ruff check . commands, and this will be in sync with the pre-commit hook as well as the CI linter based on the single source of truth in the pyproject file.