CI: add Python 3.13 and 3.14 to test matrix#360
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The matrix previously topped out at 3.12, leaving no coverage for 3.13 or 3.14. Add both so the suite validates newer interpreters — in particular the Python 3.14 argparse change (nested argument groups are now a hard error) reported in #318/#359, which was fixed in v2.6.2. Claude-Session: https://claude.ai/code/session_018iM7tTGPFS6ija49yAQpSM
iskandr
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Patch release: CI now tests Python 3.13 and 3.14 (#360), validating the 3.14 argparse fix (#318/#359) end-to-end on real interpreters. Claude-Session: https://claude.ai/code/session_018iM7tTGPFS6ija49yAQpSM
iskandr
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The classifiers list only had a bare "Programming Language :: Python", so PyPI showed no per-version support even though requires-python is ">=3.9" and CI tests 3.9 through 3.14 (#360). Add explicit "Programming Language :: Python :: 3.x" trove classifiers for 3.9–3.14 so the advertised metadata matches what is actually tested. Claude-Session: https://claude.ai/code/session_018iM7tTGPFS6ija49yAQpSM
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Adds 3.13 and 3.14 to the CI test matrix (previously topped out at 3.12).
Motivation: #359 (and the earlier #318) reported the Python 3.14 argparse change where nested argument groups became a hard error. That specific bug was fixed in v2.6.2, but 3.14 was never actually exercised in CI, so we could not verify the claim. Adding it to the matrix validates 3.14 end-to-end and guards against regressions.
Notes:
"3.13"from the list.fail-fast: true→falseso one version failing does not cancel the others.https://claude.ai/code/session_018iM7tTGPFS6ija49yAQpSM