whetstone_DSL/tmp_eval_large_specs_20260303/cp_004_rust.md

URL Shortener (cp_004)

Objective

Build a URL shortener API with custom aliases, redirect tracking, and expiration support.

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.