Baseline v0: recall@5 0.91, MRR 0.71, correct 0.89

Day 4: 42-question eval harness; fix max file size (routing.py was unindexed)

Add gitignore

Remove venv and generated data from git; add .gitignore

Day 3: embedding index + baseline ask pipeline

Day 2: AST-aware chunkers for code, docs, issues

Day 1: ingestion pipeline (code, docs, issues)