chief-upgrade

Upgrade the Chief to the version specified in the arguments.

Arguments

The first argument is the target version (branch or tag). Optional.

• No argument → upgrade to the latest stable release (highest semver tag). Find it by running git ls-remote --tags https://github.com/thaitype/chief.git, strip refs/tags/, ignore ^{} entries, and pick the highest semver version.
• canary → latest canary branch (active development, unreleased)
• v1.0.0, v2.0.0, etc. → specific tagged version

Steps

0. Detect coding agent and install mode

Detect which coding agent the user has set up:

1. .claude/agents/ exists → suggest claude-code
2. .github/agents/ exists → suggest copilot
3. Only .agents/ exists → suggest opencode