Orchestration Serialization Engine

A Rust 1.75 in-process agent-mesh substrate, delivered as a Cargo workspace of six narrowly-scoped library crates — identity and time, a lock-free bump arena, a versioned self-describing codec, an epoch-versioned state store, a four-tier priority router, and a work-stealing orchestrator — plus a reference operator binary.

Its discipline is architectural: arena allocations are borrow-checked so a freed pointer cannot dangle; hybrid-logical-clock timestamps stay monotone under wall-clock regression; archives refuse mismatched schema, version, or CRC; state readers never observe a partially-applied transaction; payload fan-out is an O(1) refcount bump, not a byte copy. Every invariant is enforced by the compiler or by a property test, and the full 46-test suite runs in under a second.

The substrate deliberately excludes a network transport, persistence layer, async runtime, multi-tenant security model, and observability sinks — each a category in which the acquirer brings their own constraints. Their absence is positioning that preserves optionality, not omission.