- Added frontmatter to 34 skills that were missing it entirely (0% Tessl score) - Fixed name field format to kebab-case across all 169 skills - Resolves #284
- chunking_optimizer.py: analyzes document corpus, recommends chunking strategies - retrieval_evaluator.py: evaluates retrieval quality with built-in TF-IDF baseline - rag_pipeline_designer.py: designs end-to-end RAG pipelines with Mermaid diagrams - References, sample corpus, expected outputs included - Zero external dependencies