Conformance posture: MOSA

Standard: Modular Open Systems Approach (MOSA), the DoD-driven practice of decomposing systems into modular, openly-interfaced components.

v0.1 posture: nous is architected for MOSA-style modularity: subsystems and estimators are pluggable via Protocols, the policy and runner are independent of any tool, and interop adapters share a single Protocol. Each adapter is replaceable without touching the engine.

What is supported: The architecture patterns MOSA encourages.

What is omitted in v0.1: A MOSA-style key-interface profile (KIP) or conformance certification. The simulator does not claim MOSA conformance, only architectural alignment.

Tracking: No backlog item; alignment is a property of the architecture and is preserved by ADR-0007 (additive-surface rule) and ADR-0011 (single adapter Protocol).