Update Claude Skills via Github Actions

claude-pr-skills-check.yaml

name: Claude Skills Check

on:
  pull_request:
    types: [opened, synchronize]
    paths-ignore:
      - '**.md'
      - 'docs/**'
      - '.github/workflows/**'

jobs:
  review:
    runs-on: ubuntu-latest
    if: github.actor != 'github-actions[bot]' && github.event.pull_request.user.login != 'claude[bot]'
    permissions:
      contents: write
      pull-requests: write
      id-token: write

    steps:
      - name: Checkout code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Discover installed Claude skills
        id: discover-skills
        run: |
          if [ -d ".claude/skills" ]; then
            SKILLS=$(find .claude/skills -name "SKILL.md" -type f | \
              sed 's|.claude/skills/||' | \
              sed 's|/SKILL.md||' | \
              tr '\n' ',' | \
              sed 's/,$//')

            if [ -z "$SKILLS" ]; then
              echo "skills=none" >> $GITHUB_OUTPUT
              echo "No Claude skills found"
            else
              echo "skills=$SKILLS" >> $GITHUB_OUTPUT
              echo "Found skills: $SKILLS"
            fi
          else
            echo "skills=none" >> $GITHUB_OUTPUT
            echo ".claude/skills directory not found"
          fi

      - name: Claude Code Review
        uses: anthropics/claude-code-action@v1
        with:
          anthropic_api_key: ${{ secrets.ANTHROPIC_API_KEY }}
          claude_args: |
            --max-turns 50
            --allowedTools "Read,Write,Edit,Bash(git:*)"
          track_progress: true
          prompt: |
            REPO: ${{ github.repository }}
            PR NUMBER: ${{ github.event.pull_request.number }}
            BASE BRANCH: ${{ github.event.pull_request.base.ref }}
            
            Analyze the commits in this PR to determine if installed skills need updates based on:
            1. New code patterns not documented in relevant skills
            2. Changes to existing patterns that skills document (imports, utilities, workflows)
            
            Only recommend updates for substantial new patterns, not trivial changes.

            **Installed Skills**: ${{ steps.discover-skills.outputs.skills }}

            **Output Format**:
            If nothing needs to be done, print ONLY: ✅ "No skills need to be updated". And **nothing** else, 
            no summary, no analysis, no steps of what you've done, nothing!!
            
            Otherwise output collapsible sections (one per skill) and nothing else:
            <details>
            <summary>[PRIORITY] Skill name - brief summary</summary>
            
            **What needs updating**: Detailed explanation
            
            **Rationale**: Why this update is needed (e.g., "New async pattern used in 3 files")
            
            </details>
            
            Use priorities: [CRITICAL] (breaking change to documented pattern), [HIGH] (significant new pattern), [LOW] (minor enhancement)
            
            Commit any skills updates to this PR branch.
        timeout-minutes: 15