Skill v1.0.0

description: Format a Julia package with runic, commit as a standalone PR, update .git-blame-ignore-revs, and install the runic post-edit hook model: sonnet effort: low metadata: version: "1.0.0"

Format the Julia package in the current directory using runic, following these steps in order:

1. Verify tests pass

Run the test suite:

julia --project -e 'using Pkg; Pkg.test()'

If there are failures, do not continue. Tell the user that this cannot continue until tests pass.

2. Verify a "clean slate"

Check that all of the following are true:

• the default branch is currently checked out
• there are no unmerged changes in tracked files
• the repository either lacks .claude/settings.json or that file lacks the string "runic -i"

If any item on the list is false, do not continue. Report reason for stopping to the user.

3. Format source files

Run runic -i on all applicable directories:

• src/ (always)
• ext/ (if it exists)
• test/ (if it exists)

Also ensure that any tests are wrapped in an appropriately-named @testset.

4. Commit and open a PR

Check out a branch, stage all formatting changes, and commit with a message like "Apply runic formatting". This commit must contain only formatting changes — no functional changes. Open a pull request.

Pause here and wait for the user to confirm the PR has been merged before continuing.

5. Update .git-blame-ignore-revs

After the PR merges, add the merge commit SHA to .git-blame-ignore-revs (create the file if needed):

# runic formatting
<sha>

Then configure the repo to use it:

git config blame.ignoreRevsFile .git-blame-ignore-revs

6. Install the runic post-edit hook

Create or extend .claude/settings.json in the project root to contain the following content (merge with any existing content rather than overwriting):

{
  "hooks": {
    "PostToolUse": [
      {
        "matcher": "Edit|Write",
        "hooks": [
          {
            "type": "command",
            "command": "python3 -c \"import sys,json; d=json.load(sys.stdin); print(d['tool_input'].get('file_path',''))\" | { read -r f; [[ \"$f\" == *.jl ]] && runic -i \"$f\"; } 2>/dev/null || true",
            "statusMessage": "Formatting Julia with Runic..."
          }
        ]
      }
    ]
  }
}

Stage .claude/settings.json. Prepare a proposed commit message and ask the user whether it should be committed.