lessonlisted

# /lesson — capture a rule into ~/.claude/CLAUDE.md The mechanism by which Claude Code agents learn from corrections. Lessons live inside the `## Lessons` section of `~/.claude/CLAUDE.md`. CLAUDE.md is officially auto-loaded by Claude Code into every session, so a rule captured here is enforced everywhere from the next conversation forward. ## When this skill MUST fire (auto-trigger, not just on `/lesson`) If the conversation contains any of these signals, capture a lesson **before continuing the prior task**: - **Correction signals**: `no`, `don't`, `stop`, `wrong`, `that's not`, `I told you`, `we discussed`, `you keep doing`, `again`, `damn`, `actually`. - **Name-the-rule signals**: `always X`, `never Y`, `from now on Z`, `remember this`, `this needs to be a lesson`, `make this an enforced lesson`, `record this rule`. - **Self-discovered constraint**: you tried something, hit an error, learned the actual rule. If a future session would benefit from that knowledge, capture it. Do NOT silently absorb the correction and move on. The user has named a rule; future sessions need to see it. Capture the rule first, then continue the original task. ## What a lesson looks like A lesson is a markdown block under `## Lessons` in `~/.claude/CLAUDE.md`: ```markdown <!-- lesson: <slug>, scope: <scope>, added: <YYYY-MM-DD> --> **<one-line trigger sentence>** <rule body, one paragraph, specific and actionable> ``` There is **no "why" field**. A rule is a rule — the body should be s