Add GitHub Action to run doctools.py on pull requests and commit data changes

[Copilot]

Independent contributors rely on local git hooks to run src/ssvc/doctools.py when src/ssvc/* changes. This adds a CI enforcement step so PRs always regenerate and commit updated data/ files before merging.

Changes

• .github/workflows/run_doctools.yml — new workflow that:
  • Triggers on PRs touching src/ssvc/**
  • Installs deps via uv, clears stale data/json/decision_points/, then runs python -m ssvc.doctools --overwrite --datadir ./data
  • Non-fork PRs: auto-commits any resulting data/ changes back to the PR branch; no-ops if nothing changed
  • Fork PRs: verifies no data/ regeneration is needed; fails with a clear error message instructing the contributor to run make regenerate_json locally and push the results (since GITHUB_TOKEN cannot push back to a fork)
  • Skips the job entirely when triggered by github-actions[bot] (via if: github.actor != 'github-actions[bot]') to prevent recursion while still allowing all other CI checks to run on the auto-committed data/ update

Original prompt

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This section details on the original issue you should resolve

<issue_title>Create GitHub action to run doctools.py on pull requests</issue_title>
<issue_description>Independent contributors have local git hooks to run src/ssvc/doctools.py if code is changed in src/ssvc/*.

We want a GitHub action to run doctools.py on pull requests before merging, and then commit changes made in data/</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Create GitHub action to run doctools.py on pull requests #1069

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[Copilot]

Pull request overview

Adds CI enforcement to run ssvc.doctools on pull requests that modify src/ssvc/**, with the intent of ensuring regenerated data/ artifacts are committed before merge.

Changes:

• Introduces a new GitHub Actions workflow to run python -m ssvc.doctools --overwrite --datadir ./data on relevant PRs.
• Removes existing data/json/decision_points prior to regeneration to avoid stale outputs.
• Attempts to auto-commit and push any resulting data/ changes back to the PR branch.

[ahouseholder]

@copilot apply changes based on the comments in this thread

[Copilot]

@copilot apply changes based on the comments in this thread

Applied both reviewer suggestions in commit 691a6b1:

1. Fork handling — Added a Fail if fork PR has uncommitted data/ changes step that runs only when github.event.pull_request.head.repo.full_name != github.repository. It errors out with a clear message telling the contributor to run make regenerate_json locally and push the result. The commit/push step is conditionally skipped for fork PRs.

2. Replaced [skip ci] — Added if: github.actor != 'github-actions[bot]' at the job level. When the auto-commit triggers a new workflow run, the job is skipped entirely, so all other CI checks still execute against the updated data/ commit.