[tompollard]

rdann fails when record_name is a pathlib.Path:

wfdb.rdann(pathlib.Path("sample-data/100"), "atr")
# TypeError: unsupported operand type(s) for +: 'PosixPath' and 'str'

The file name is built with record_name + "." + extension. rdrecord, rdsamp and rdheader already accept path-like objects, so rdann now converts record_name with os.fspath at the start, and the docstring says str or os.PathLike.

This is the remaining part of #346, without the changes to how PhysioNet URLs are built.

Tests: reading sample-data/100 with a Path gives the same annotations as with a string (this fails on main), and reading from a .wfdb archive given as a Path works too.

[lukepayyapilli]

Thanks Tom, checked 4370a52b locally merged with main:

• Fix: converting with os.fspath at the top means every later use gets a str, including the rdheader fallback for fs. rdann(pathlib.Path("100"), "atr", pn_dir="mitdb") also works against PhysioNet. ann2rr and the processing functions that call rdann accept a Path now as well.
• Tests: test_rdann_path fails on main with the TypeError and passes here. test_rdann_archive_path already passes on main, since the archive code converts the path itself, so it guards the archive case rather than this fix. The full suite gives 337 passed, 2 skipped (PhysioNet timeouts).
• Style and docs: ruff format --check and ruff check are clean, the docs build passes with -W, and the changelog entry renders correctly in towncrier build --draft.