v1.2.0 — Lesson Extraction System

What's New

Full Lesson Extraction (Phase 4 upgrade)

Phase 4 evolved from a simple "Spot Check" into a structured Lesson Extraction system:

• 5 detection signals — automatically identifies learning moments: repeated edits, bash failure loops, user corrections, web search knowledge gaps, and approach pivots
• 5-step extraction flow — scan → distill → route → ask user → cross-project promote
• Lesson file template — structured format with Root Cause, Correct Approach, and Evidence sections
• Cross-project promote — when the same lesson appears in 2+ projects, suggests promoting to MEMORY.md for universal access

Why this matters

Session handoff captures what happened. Lesson extraction captures what was learned. Together they ensure nothing valuable is lost between sessions.