rust-error-design

Steps

1. List failure modes per public function.
2. Model them as an enum with thiserror.
3. Implement From conversions for wrapped errors.
4. Ensure messages are lowercase, no trailing punctuation.

Done When

• [ ] No unwrap or expect outside tests and main

Registry

Links

• Up: Rust Engineer skills
• Siblings: rust-code-review, rust-perf-profile
• Frameworks: rtf, tidd-ec, xml-structured, chain-of-thought
• Tests: testing guide