More release fixes and refinements

[blink1073]

References

N/A

Description

Follow-up fixes and refinements to the release action and workflow introduced in #395–#398. Consolidates
publishing into the release workflow and removes the separate publish workflow.

Changes

• release/action.yml: Add name: labels to previously unnamed steps for clarity; add permission-contents:
  write to the app token step; remove explicit fromTag from changelog builder (auto-detects from last
  tag); add a configurationJson to categorize changelog entries by label (enhancements, bugs, docs,
  maintenance, dependencies); fix GITHUB_STEP_SUMMARY echo to use two separate lines instead of a literal
  \n; run mdformat on CHANGELOG.md after inserting the new entry; add --frozen flag to uv version --bump
  patch --bump dev
• release.yml: Clarify dry-run description; add inline publish job that builds, inspects, and uploads to
  Test PyPI (and PyPI for non-dry-run), replacing the separate publish workflow
• publish/action.yml and publish.yml: Removed — publishing is now handled directly within release.yml
• CHANGELOG.md: Remove the 1.0.1rc1 section (entries will be regenerated by the release action)
• pyproject.toml: Revert version back to 1.0.0rc1 (was incorrectly bumped to 1.0.2.dev1)

Backwards-incompatible changes

None

Testing

The release action changes are validated by the dry-run path in the release workflow (after merging).

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: None

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.29%. Comparing base (e7a3a5a) to head (c9aa9e9).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #399   +/-   ##
=======================================
  Coverage   90.29%   90.29%           
=======================================
  Files          51       51           
  Lines        2946     2946           
  Branches      414      414           
=======================================
  Hits         2660     2660           
  Misses        209      209           
  Partials       77       77           

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