ci: fix commit_gate workflow (pytest install + self-trigger)

[Copilot]

The commit_gate_ci.yml workflow lacked a proper pytest install step and didn't re-trigger when the workflow file itself changed.

Changes

• Self-trigger: Added .github/workflows/commit_gate_ci.yml to both push and pull_request path filters
• Pytest install: Expanded the install step to upgrade pip before installing pytest

# Before
- name: Install pytest
  run: pip install pytest

# After
- name: Install pytest
  run: |
    python -m pip install --upgrade pip
    pip install pytest

Original prompt

Repo: LalaSkye/constraint-workshop

Task: Update GitHub Actions workflow .github/workflows/commit_gate_ci.yml with a MINIMAL diff.

Current workflow content (for reference):

name: Commit Gate CI

on:
  push:
    paths:
      - 'commit_gate/**'
  pull_request:
    paths:
      - 'commit_gate/**'

jobs:
  test:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        python-version: ['3.10', '3.11', '3.12']
    steps:
      - uses: actions/checkout@v4
      - name: Set up Python ${{ matrix.python-version }}
        uses: actions/setup-python@v5
        with:
          python-version: ${{ matrix.python-version }}
      - name: Run commit_gate tests
        run: |
          cd commit_gate
          python -m pytest tests/ -v --tb=short

Required changes:

1. In the on: section, update BOTH push.paths and pull_request.paths so they include BOTH of these entries:

   • 'commit_gate/**'
   • '.github/workflows/commit_gate_ci.yml'
     Keep existing structure; just add the workflow path.

2. In jobs: test: steps:, insert a new step AFTER actions/setup-python@v5 (after the with: python-version: block) and BEFORE the step that runs pytest. The step must be exactly:

      - name: Install pytest
        run: |
          python -m pip install --upgrade pip
          pip install pytest

3. Ensure the test step runs exactly:

          cd commit_gate
          python -m pytest tests/ -v --tb=short

Constraints:

• Do NOT add caching, requirements files, poetry/pipenv, or any other changes.
• Do NOT modify any other parts of the workflow.

Delivery:

• Create branch fix/commit-gate-ci-pytest.
• Commit message: ci: install pytest and self-trigger commit_gate workflow
• Open a PR to main titled: ci: fix commit_gate workflow (pytest install + self-trigger)
• After CI is green for matrix Python 3.10/3.11/3.12 and logs show Install pytest executed, merge PR and delete the branch.

This pull request was created from Copilot chat.

---

💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.