ShareClean v0.3.3

Security

• Fixed a filesystem safety issue where equivalent output path spellings, such as input.txt and ./input.txt, could bypass the in-place overwrite guard and modify the input file.
• The output writer now checks canonical filesystem identity before opening the output file.

Validation

• python -m unittest discover
• Manual temp-file repro now exits with code 2 and leaves the input unchanged.
• Built shareclean-0.3.3 wheel and sdist in a fresh temp directory.
• python -m twine check passed for both distributions.
• python -m shareclean --version reports shareclean 0.3.3.