- run_from_query() now delegates to run(event, binding) instead of maintaining
a separate legacy execution path
- Pipeline Query is converted to AgentEventEnvelope via PipelineCompatAdapter
- Pipeline config is converted to AgentBinding with StatePolicy
- bound_plugins authorization preserved from Pipeline
- Legacy compatibility fields preserved:
- query_id → context.runtime.query_id → session registry
- prompt → context.compatibility.extra.prompt (not top-level)
- params → context.compatibility.extra.params (with proper filtering)
- max-round → bootstrap.messages and compatibility.legacy_messages
- Pipeline path gains event-first host capabilities:
- EventLog and Transcript writing
- ArtifactStore registration
- PersistentStateStore for state.updated
- Removed legacy handlers:
- _handle_artifact_created_query() (replaced by _handle_artifact_created)
- _handle_state_updated() (replaced by _handle_state_updated_event)
This change unifies the execution path while preserving backward compatibility
for Pipeline-based runners. EventGateway is not implemented in this branch;
only the event-first entry point is reserved.
