10x-lesson

What problem does it solve? Recurring bugs and design pitfalls get fixed once but forgotten, so the same class of mistake resurfaces in later work. This Skill captures those recurring rules into a persistent, append-only lessons register that future planning, implementation, and review runs re-read as prior context. ## Core Features & Use Cases - Structured four-field interview: Collects Context, Problem, Rule, and Applies-to fields from the user so every lesson is specific enough to pattern-match later. - Append-only register: Writes entries to context/foundation/lessons.md without reordering, deduplicating, or editing existing entries, and self-bootstraps the file with a canonical header on first use. - Cross-skill reuse: Captured lessons are re-read by frame, research, plan, plan-review, implement, and impl-review workflows as priors. - Use Case: After noticing that feature flags keep shipping without expiration dates, invoke the skill to record the rule "feature flags should always have a kill date" so future implementation and review runs flag it automatically. ## Quick Start Ask the assistant to record a recurring rule into context/foundation/lessons.md, then answer the four short interview questions and confirm the proposed entry.