Durable event bus turn-progress signals are published to

E — Execution Environment: sandbox and resource limits

T — Execution journal for tracking tool calls (revert support)

L — Lifecycle: hooks and pipeline stages

C — Context & Memory: tiered memory configuration

G — Governance: permissions, constitution, audit, policies

V — Verification: readiness checks, trace store, and judge

Scope identifying the turn whose progress signals are published (ActionId = turnId)

T — Tool Interface: protocol for tool discovery and invocation

O — Observability: tracer, metrics, and resilience

Overlay host-provided pluggable services onto this config. A service that is `Some` overrides the current value; `None` leaves the existing value intact.