Module traits 

Plugin trait definitions.

Defines the 6 core plugin traits plus supporting traits:

• Tool – tool execution interface
• ChannelAdapter – channel message handling
• PipelineStage – pipeline processing stage
• Skill – skill definition with tool list
• MemoryBackend – memory storage interface
• VoiceHandler – placeholder for voice forward-compat
• KeyValueStore – key-value storage for plugins
• ToolContext – execution context for tools
• ChannelAdapterHost – host services for channel adapters

All traits are Send + Sync. Async methods use #[async_trait].

Structs

CancellationToken

A token which can be used to signal a cancellation request to one or more tasks.

Enums

PipelineStageType

Types of pipeline stages.

Traits

ChannelAdapter

A channel adapter for connecting to external messaging platforms.

ChannelAdapterHost

Host services exposed to channel adapters.

KeyValueStore

Key-value store interface exposed to plugins via ToolContext.

MemoryBackend

A pluggable memory storage backend.

PipelineStage

A stage in the agent processing pipeline.

Skill

A skill is a high-level agent capability composed of tools, instructions, and configuration.

Tool

A tool that can be invoked by an agent or exposed via MCP.

ToolContext

Execution context passed to Tool::execute() and Skill::execute_tool().

VoiceHandler

Placeholder trait for voice/audio processing (Workstream G).