bonsai

name	bonsai
user-invocable	true
description	Create a ready git worktree from the freshest default branch and prime its `.bonsai` files. Worktree is sometimes misspelled as "work tree" (e.g. when dictated); treat both spellings as this skill.

bonsai

Worktree lifecycle as a small CLI. ("Worktree" is sometimes transcribed as two words, "work tree", when dictated; the two mean the same thing.) This skill makes a ready-to-use worktree: it creates the branch off the freshest Git default branch and primes the tree from the repo's .bonsai file list. It refuses a checkout that vaultsync reports as managed, because a vaultsync root is a sync target rather than a worktree factory. It does not launch an agent and does not write a start command anywhere; it returns facts and stops.

Resolve the bin (cross-agent)

The CLI lives in this plugin's bin/. Resolve the plugin root, then call it:

resolve_bonsai_root() {
  if [ -n "${BONSAI_BIN:-}" ]; then dirname "$(dirname "$BONSAI_BIN")"; return 0; fi
  if [ -n "${CLAUDE_PLUGIN_ROOT:-}" ]; then printf '%s\n' "$CLAUDE_PLUGIN_ROOT"; return 0; fi
  if command -v codex >/dev/null 2>&1; then
    codex plugin list | awk '$1 == "bonsai@laicluse-agent-fieldkit" { print $NF; found=1; exit } END { exit found ? 0 : 1 }'
    return $?
  fi
  return 1
}
ROOT="$(resolve_bonsai_root)" || { echo "bonsai plugin root not found" >&2; exit 1; }
BONSAI="${BONSAI_BIN:-$ROOT/bin/bonsai}"

Make the worktree

node "$BONSAI" create <branch> --repo "<canonical checkout root>" --json
node "$BONSAI" setup  "<worktree path from create>" --repo "<canonical checkout root>" --json

create resolves the freshest Git default branch from origin/HEAD, or from init.defaultBranch when the configured branch exists only locally. It asks the vaultsync CLI whether the source checkout is managed, makes <root>/worktrees/<dir> (slashes in the branch flatten to dashes in the dir), refuses a branch that already exists, and prints { worktree, branch, base, baseSha, port }. setup copies the .bonsai-listed files from the canonical checkout and installs dependencies per directory using the package manager each lockfile names.

Relay the worktree path and the dev-server port to the operator. The port is a deterministic hint in 3100-3999; use it for a dev server in the worktree so it does not collide with the main checkout. Tearing the worktree down later is /prune (the teardown subcommand).