- On code return identifiers/characters in English language, no invalid tokens!
- Do not emit any comments, and remove any existing ones in Rust/HTML.
- Compact the code emission where possible.
- On code change, ensure cargo check cycle to remove warnings and errors.
- Never use defaults or magic values in code (never unwrap_or_else or similar)
- Check borrow, clone, types, common Rust errors! Return 0 warning code!