ENH: Update nightly runner to use a local install of python 3.13

[aylward]

Use an embedded python in the action directory on the remote machine.

Summary by CodeRabbit

• Chores
  • Updated nightly health checks and dashboard generation to run on Python 3.13.
  • Existing test execution, reports, dashboard creation, and status updates remain unchanged.

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[coderabbitai]

Walkthrough

The nightly health workflow now uses Python 3.13 for Windows virtual environment creation and Ubuntu dashboard generation. Test execution, artifact production, dashboard generation, and status publishing remain unchanged.

Changes

Nightly health runtime

Layer / File(s)	Summary
Update nightly health Python runtimes .github/workflows/nightly-health.yml	The Windows health-tests job creates its virtual environment with Python 3.13, and the Ubuntu build-dashboard job configures Python 3.13.

Estimated code review effort: 1 (Trivial) | ~3 minutes

Possibly related PRs

• Project-MONAI/physiotwin4d#83: Updates the Python version used in the same nightly health workflow.
• Project-MONAI/physiotwin4d#91: Changes Python interpreter selection in the same workflow.

Suggested reviewers: copilot

🚥 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 matches the main change: switching the nightly runner workflow to Python 3.13.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
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.

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In @.github/workflows/nightly-health.yml:
- Around line 58-61: Update the virtual-environment setup command in the
workflow’s Python installation step to use a guaranteed pip-capable Python
installation, such as the installed Python 3.13 executable under C:\Program
Files\Python313, instead of the undefined embeddable runtime path. Preserve the
existing venv target and Python 3.13 requirement.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

• Push a commit to this branch (recommended)
• Create a new PR with the fixes

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro Plus

Run ID: 77837632-bb6d-4d83-a864-c4e2aa4bcd9e

📥 Commits

Reviewing files that changed from the base of the PR and between 7d73044 and f1bb666.

📒 Files selected for processing (1)

• .github/workflows/nightly-health.yml