# Improvement Scan -- clawhdf5

**Date:** 2026-05-04
**Loop:** research-update-quantum
**Branch:** research/scan-20260504-113439

## Changes Made

### 1. `crates/clawhdf5-agent/src/lib.rs` -- Eliminate WAL unwrap() via is_none_or + if let
- Replaced two if self.wal.is_some() { ... self.wal.as_ref().unwrap()... } patterns
- New: self.wal.as_ref().is_none_or(|w| ...) + if let Some(ref mut w) = self.wal
- Eliminates 4 production unwrap() calls -- cannot panic now

### 2. `crates/clawhdf5-agent/src/agents_md.rs` -- to_string() -> to_owned() on literals (3 changes)

### 3. `crates/clawhdf5-agent/src/knowledge.rs` -- to_string() -> to_owned() on &str params (3 changes)

### 4. `crates/clawhdf5-agent/src/query_expand.rs` -- to_string() -> to_owned() on literals (2 changes)

## Gates
- cargo clippy --workspace -- -D warnings: PASSED
- cargo test --workspace: PASSED