Contributors Update

Workflow

1. Ensure a clean, up-to-date master

Locate the primary checkout even when the skill is invoked from a worktree, then update and inspect master:

PRIMARY_CHECKOUT="$(git worktree list --porcelain | grep -m1 '^worktree ' | cut -d' ' -f2-)"
git -C "$PRIMARY_CHECKOUT" checkout master
git -C "$PRIMARY_CHECKOUT" pull --ff-only origin master
git -C "$PRIMARY_CHECKOUT" status --short
cd "$PRIMARY_CHECKOUT"

Stop if the primary checkout is dirty. Do not stash, overwrite, or mix the contributor update with other changes. This workflow qualifies for the documentation-only exception in AGENTS.md, allowing the approved README.md change to be committed directly to master without a PR.

2. Find the cutoff date