chore(ci): run CI on GitHub-hosted runners, drop Blacksmith

[sebyx07]

Org rule (2026-10-07): private repos run CI on Ubicloud standard runners, public repos on GitHub-hosted runners; Blacksmith is retired.

Public repo → GitHub-hosted runners (free for public repos). Blacksmith is retired org-wide.

• Every workflow: blacksmith-{2,4}vcpu-ubuntu-2404 → ubuntu-latest (PyPI trusted publishing needs GitHub-hosted anyway).
• CLAUDE.md: runner line updated to match.

The checks on this PR run on the new runners — they are the proof.

🤖 Generated with Claude Code

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Summary by CodeRabbit

• Release Improvements
  • Release verification now checks that the version reported by both command-line wrappers matches the release tag. A mismatch stops the release process.
• CI and Publishing
  • CI, Docker publishing, and package publishing workflows now run on GitHub-hosted Ubuntu runners. Workflow triggers and other job settings remain unchanged.

[coderabbitai]

No actionable comments were generated in the recent review. 🎉

ℹ️ Recent review info

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• Configuration used: Repository: developerz-ai/claude-task-master/.coderabbit.yml
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📥 Commits

Reviewing files that changed from the base of the PR and between 9aad522 and fb75223.

📒 Files selected for processing (5)

• .github/workflows/ci.yml
• .github/workflows/docker-publish.yml
• .github/workflows/publish-test.yml
• .github/workflows/publish.yml
• CLAUDE.md

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📝 Walkthrough

Walkthrough

CI and publishing workflow jobs now use ubuntu-latest runners. The release verification job also checks that the root and packaged wrapper versions match the release tag. The CI documentation describes the runner setup.

Changes

Workflow updates

Layer / File(s)	Summary
CI runner updates .github/workflows/ci.yml, CLAUDE.md	The lint, test, and package jobs use ubuntu-latest. The documentation describes the runner setup, including the private-repository rule.
Publishing runner updates .github/workflows/docker-publish.yml, .github/workflows/publish-test.yml	The Docker publish and test-publish jobs use ubuntu-latest.
Release workflow updates .github/workflows/publish.yml	The verify, test, build, create-release, and publish-pypi jobs use ubuntu-latest. Verification checks that the root and packaged wrapper versions match the release tag.

Priority: ➖ Normal

Estimated code review effort: 2 (Simple) | ~10 minutes

Change: Other

Merge Risk: ⚪ Minimal · up to fb752

No actionable release or CI issue is established; the change is mergeable after normal checks.

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title clearly and concisely describes the main changes: moving CI to GitHub-hosted runners and removing Blacksmith runners.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check. Docstring coverage is scoped to functions touched by this diff. Analyzed 0 functions across 0…
Linked Issues check	✅ Passed	Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check	✅ Passed	Check skipped because no linked issues were found for this pull request.

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• Commit to this branch
• Create a new PR

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