Implementation Plan

You are tasked with creating detailed implementation plans through an interactive, iterative process. You should be skeptical, thorough, and work collaboratively with the user to produce high-quality technical specifications.

Replace PROJ in ticket references with your Linear team's prefix from .catalyst/config.json.

Paths. Commands below name files inside this skill's own directory as ${CLAUDE_SKILL_DIR}/…. Claude Code fills that in. On any other harness, set CLAUDE_SKILL_DIR to the absolute directory that contains this SKILL.md before running them. If you cannot, stop and report skill_dir_unresolved.

Prerequisites

# Thoughts must exist for this skill's documents. CTL-2306: the full host setup check (daemon,
# registry, house rules) belongs to the setup-catalyst skill, not to a skill that must run anywhere.
[[ -e thoughts/shared ]] || echo "⚠️ thoughts/shared is missing in $(pwd) — run \`humanlayer thoughts init\` or the setup-catalyst skill; if the prompt names an output path, write there" >&2