rust-core-memory-model

Conceptual overview of Rust's memory model. This skill teaches the mental model: ownership, move semantics, RAII, stack vs heap, smart pointer choice, interior mutability, and the Send/Sync auto-traits. Granular mechanics live in cross-referenced skills.

Cross-references: [[rust-syntax-ownership]] [[rust-syntax-borrowing]] [[rust-syntax-smart-pointers]] [[rust-syntax-async-await]]

When to use this skill

User asks "what is ownership / moves / clones / drops in Rust"
User confused by a "value moved here" or "cannot borrow" compiler message at the conceptual level
User asks "should I use Rc or Arc", "do I need Mutex or AtomicX", "what is interior mutability"
User asks "is this Send? is this Sync?"
User asks "what gets dropped when, and in what order"
User asks "what does &str cost vs String" or general stack-vs-heap questions

For the mechanics of these (exact syntax, lifetime elision, reborrow rules, smart pointer methods), refer the user to the cross-referenced skills above.