Crate polyc_runtime 

Shared Unix-coherence scaffolding for polychrome binaries (PRD §11): structured logging, a health/metrics side-server, and signal-driven graceful shutdown. Used by both the control plane and the harness so the two binaries behave identically under Kubernetes.

Modules

compat

Update compatibility classifier — the safety interlock at the heart of the update model (see the update PRD and docs/design/operator-mailbox.md).

ghcr

Shared OCI-registry helpers: the published-component roster plus immutable manifest-digest resolution, registry-agnostic.

health

The axum side-server (PRD §11): liveness, readiness, and metrics on a separate port from a binary’s main surface.

hot_reload

Hot config-as-data reload — apply a verified bundle at the turn boundary, with no process restart (see the update PRD and crate::compat / crate::stager).

observability

Logging + traces + panic discipline (PRD §11).

propagation

W3C traceparent propagation across the connectrpc boundary.

signals

Signal-driven graceful shutdown (PRD §11).

stager

Update stager — the apply substrate the hot and warm update paths build on.

supervise

Server-task supervision: run a binary’s spawned servers until a shutdown signal, treating any earlier exit as fatal.

update_copy

The one place an available update is worded for a person.

warm_swap

Warm drain-swap-resume — the click-to-restart path for a wire- and schema-compatible binary swap (see the update PRD, crate::compat, and crate::stager).