Module events 

Shared types for agent events.

This module provides types used across multiple Aether packages:

• Agent message types (AgentMessage, UserMessage)
• ACP protocol extension payloads (SubAgentProgressPayload)

Structs

SubAgentProgressPayload

Payload for sub-agent progress updates emitted by MCP tools.

Enums

AgentMessage

Message from the agent to the user.

UserMessage

Message from the user to the agent.

Constants

SUB_AGENT_PROGRESS_METHOD

Custom notification methods for sub-agent progress updates. Per ACP extensibility spec, custom notifications must start with underscore.