# Rust Simplify > One-file-at-a-time Rust quality pass for Citum, using jcodemunch to target the highest-value cleanup. Use when this capability is needed. - Skill: `tomevault-io/rust-simplify` (Agent Skill, multi-file: 2 files) - Install (CLI): `npx skillmds@latest add tomevault-io/rust-simplify` - Raw SKILL.md: https://api.skillmd.com/api/skills/tomevault-io/rust-simplify/raw - Safety review: pending (external: skill-scanner PASS, skillspector PASS) - Works with: Claude Code, Claude.ai, OpenAI Codex - Category: Coding & Dev Tools - Author: tomevault-io (https://skillmd.com/u/tomevault-io) - Updated: 2026-09-17 - Page: https://skillmd.com/skills/tomevault-io/rust-simplify --- # Rust Simplify Use this skill for bounded Rust cleanup work in the Citum workspace when the task is to improve code quality rather than fix a specific bug. When `.jj` is present, use `docs/guides/JJ_AI_CHANGE_STACK.md` for optional local change isolation and intent capture before publishing through Git/GitHub. Read first: - `docs/guides/CODING_STANDARDS.md` - `docs/guides/AGENT_SKILLS.md` ## Target Selection - Prefer `jcodemunch` symbol and file analysis before reading large files. - Pick the highest-value Rust file in the affected crate or module. - If a file path was supplied, confirm it is actually wired into the build. ## Quality Pass - Reduce duplication and nested control flow. - Prefer idiomatic Rust and explicit error handling. - Review suspicious string ownership patterns. Prefer borrowed `&str` for lookup and comparison work, and allocate `String` values at real ownership boundaries. - Do not perform broad allocation churn in hot paths without benchmark evidence. - Add or update tests when behavior changes. - When tests change, keep expected values independent of current implementation output and confirm behavior changes would have failed before the fix when practical. - Keep the scope to one focused file or one tightly related cluster. ## Verification - Run the repo-required Rust checks for any `.rs`, `Cargo.toml`, or `Cargo.lock` change. - Run `python3 scripts/audit-rust-review-smells.py --changed` for Rust cleanup passes and review the advisory findings. - Regenerate schemas if the touched files require it. - Report the exact checks you ran and the result. --- > Source: [citum/citum-core](https://github.com/citum/citum-core) — distributed by [TomeVault](https://tomevault.io).