Design

Contract-level documentation for the parts of the runtime that callers depend on.

Page	Contract
Provider contract	Capability records, stateful vs. stateless, resolution and validation
Declarative provider bindings	Config-only provider onboarding for compatible CLI framings
Config virtual layers	USER/PROJECTS layering, changes vs. overrides, conflict diffing
Orchestrator-verified completion and A2A	Why a worker never marks its own work done, and the A2A vocabulary that carries evidence