root-cause-analyzerlisted

# Root Cause Analyzer Skill ## Purpose Systematically identifies root causes of complex problems using the 5 Whys methodology from docs/5-WHYS-METHODOLOGY.md. Documents findings in docs/development-learnings/ and updates Knowledge Base (docs/kb/) using `make kb-pattern`. Implements FR-009 from the feature specification. ## Knowledge Base Integration **IMPORTANT**: Before starting root cause analysis, check the Knowledge Base for existing patterns. ### Pre-Analysis KB Check ```python from scripts.kb.search import kb_search, kb_get_pattern # Search for similar issues results = kb_search( query="[error message or symptom]", category="[ARCH/DB/API/TEST/etc]", min_quality_score=60, limit=5 ) if results: print(f"Found {len(results)} existing patterns!") # Review top pattern pattern = kb_get_pattern(results[0].id) if pattern: # Apply existing solution instead of re-analyzing print("Applying existing root cause analysis from KB") else: print("No existing patterns found. Proceeding with new 5 Whys analysis") ``` ### When to Check KB 1. **Before starting 5 Whys**: Search for error messages, symptoms, or similar problems 2. **During analysis**: Browse relevant categories (ARCH, DB, API, TEST, ERROR) for design patterns 3. **After finding root cause**: Search again to see if this is a known systemic issue 4. **Before documenting**: Check if similar pattern exists to avoid duplication ### What to Search For - **Exact error me