Ownership & Lifetimes Layer 1: Language Mechanics Core Question Who should own this data, and for how long? Before fixing ownership errors, understand the data's role: - Is it shared or exclusive? - Is it short-lived or long-lived? - Is it transformed or just read? --- Error → Design Question | Error | Don't Just Say | Ask Instead | |-------|----------------|-------------| | E0382 | "Clone it" | Who should own this data? | | E0597 | "Extend lifetime" | Is the scope boundary correct? | | E0506 | "End borrow first" | Should mutation happen elsewhere? | | E0507 | "Clone before move" | Why are we…