whetstone_DSL/tmp_eval_large_specs_20260303/cp_019_rust.md

CLI Diff Tool (cp_019)

Objective

Build a text diff CLI with unified output, word-level mode, and ignore-whitespace option.

Language & Library Constraints

• Primary language: rust
• Available libraries: axum, serde, tokio, sqlx
• Use library APIs explicitly where suitable in execution contracts.

Acceptance

• Deterministic taskitems with strict execution contracts.
• Include selected library and preferred APIs when applicable.