cleanup opportunities

Cleanup opportunities

The repository has strong maintenance checks, so this section focuses on size, churn, and dependency freshness rather than obvious dead code. Vulture and duplicate-code checks are already part of .github/workflows/ci.yml.

Current opportunities

Area	Signal	Page
Complexity	`src/lode/indexer.py`, `src/lode/graph.py`, and `src/lode/storage.py` are the largest source files.	Complexity hotspots
Dependencies	Optional and dev tooling need regular updates, especially Kuzu and security scanners.	Dependency freshness