//! Private store platform backend.
//!
//! This module is the narrow room for target-sensitive machine contact. It
//! exposes mechanics only; store/cold-start/frontier code owns admission and
//! durability semantics.
/// Test-only global-allocator shims (counting / fault injection). Re-exported
/// publicly by `store` so a dedicated single-test binary can install one as
/// `#[global_allocator]`. Compiled out entirely unless `alloc-count` or
/// `fault-alloc` is enabled.
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