Module adapter 

History adapter trait and shared types.

Structs

DiscoveredFile

A discovered file on disk (path + modification time).

HistoryMessage

A single message in a conversation.

HistorySession

Full parsed session — produced on demand when user opens a conversation.

SessionMeta

Lightweight metadata for the session list — extracted without full parsing.

ToolUseSummary

Summary of a tool call within an assistant message.

Enums

HistoryError

Error type for history operations.

Traits

HistoryAdapter

One implementation per CLI provider.