Final 31 ml crate fixes: unsafe_code allows, unused vars prefixed, boolean simplification, dead code removal, integer suffix, drop cleanup. cargo fix auto-removed ~30 unused imports from ml crate. Total clippy cleanup: 278 errors → 0 across all ML crates. Full workspace: `cargo clippy --workspace --lib -- -D warnings` = 0 errors. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>