Release tooling: bump to 1.0.0rc4, improve version validation and bump_dev script

[blink1073]

References

#411

Description

Updates release tooling ahead of the 1.0.0 release cycle. Sets the version to 1.0.0rc4, improves bump_dev.py to handle pre-release and dev versions correctly, and adds input validation to the release action with clearer documentation of accepted version formats.

Changes

• Set version to 1.0.0rc4
• Update bump_dev.py: skip bumping if version has any suffix (dev, rc, alpha, beta, a, b); bump patch for clean versions (1.2.3 → 1.2.4.dev0)
• Update release workflow and action version input description to enumerate valid poetry bump types (patch, minor, major, prepatch, preminor, premajor, prerelease) and version strings (e.g. 1.0.0rc4)
• Add link to https://python-poetry.org/docs/cli/#version in workflow/action comments
• Add validation step in release action that rejects unrecognized version inputs

Backwards-incompatible changes

None

Testing

N/A

AI usage

• Some or all of the content of this PR was generated by AI.
• The human author has carefully reviewed this PR and run this code.
• AI tools and models used: Claude Sonnet 4.6 (Claude Code)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.30%. Comparing base (f5e7e86) to head (e5781e0).
⚠️ Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #412   +/-   ##
=======================================
  Coverage   90.30%   90.30%           
=======================================
  Files          51       51           
  Lines        2950     2950           
  Branches      414      414           
=======================================
  Hits         2664     2664           
  Misses        209      209           
  Partials       77       77           

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.