Crate codeoid_protocol 

Codeoid wire protocol — Rust port of src/protocol/types.ts from the daemon.

This crate is pure data: no I/O, no async, no Tokio. It defines serde- compatible types for every message that flows between a Codeoid client and the daemon’s WebSocket server.

Design notes

• Discriminated unions. TypeScript uses type: "foo" and kind: "bar" as discriminants. In Rust these map to #[serde(tag = "type")] and #[serde(tag = "kind")] tagged enums.
• Forward compatibility. The daemon’s design explicitly says “frontends ignore unknown kinds”. We mirror that by using #[serde(other)] on a trailing Unknown variant and #[serde(flatten)] on extensible metadata maps. Adding new server-side message kinds never breaks an old Rust client — they deserialize into DaemonMessage::Unknown and the TUI logs + skips them.
• Tool state as full replacement. ToolState is a tagged enum where each phase carries its own shape. When a SessionMessageDelta arrives with tool_state_update, replace the whole ToolInfo::state — do not merge fields.

Versioning

PROTOCOL_VERSION is compared against the protocol_version field the daemon sends on auth.ok. Mismatch is non-fatal (the daemon’s additive changes keep old clients working), but the client warns the user so they can upgrade.

Re-exports

pub use client::Attachment;

pub use client::ClientMessage;

pub use client::SearchScope;

pub use client::SendPriority;

pub use client::SessionImportSource;

pub use daemon::AuthOkMsg;

pub use daemon::ClaudeConfigAgent;

pub use daemon::ClaudeConfigHook;

pub use daemon::ClaudeConfigMcpServer;

pub use daemon::ClaudeConfigScope;

pub use daemon::ClaudeConfigSkill;

pub use daemon::DaemonMessage;

pub use daemon::ErrorCode;

pub use daemon::ModelInfo;

pub use daemon::ProviderCommand;

pub use daemon::SessionExportCounts;

pub use daemon::SessionExportManifest;

pub use daemon::SessionExportMetaSlim;

pub use daemon::SessionExportPayload;

pub use daemon::SessionExportWorkdir;

pub use daemon::SessionSearchHit;

pub use daemon::SessionSearchSnippet;

pub use daemon::SessionUiRequestMsg;

pub use daemon::UiRequestMethod;

pub use daemon::UiResolvedReason;

pub use message::ContentPart;

pub use message::IdentityType;

pub use message::MessageIdentity;

pub use message::MessageRole;

pub use message::SessionMessage;

pub use message::SessionMessageDelta;

pub use session::ForkedFrom;

pub use session::SessionInfo;

pub use session::SessionMode;

pub use session::SessionStatus;

pub use session::SessionUsage;

pub use session::SessionWorktree;

pub use session::Subagent;

pub use session::TurnUsage;

pub use tool::CancelReason;

pub use tool::ConfirmedBy;

pub use tool::ToolInfo;

pub use tool::ToolPhase;

pub use tool::ToolState;

Modules

client

Client → Daemon messages.

daemon

Daemon → Client messages.

message

Session messages — the unit of observable work. Every prompt, tool call, tool result, and assistant reply flows as one of these.

session

Session metadata — the SessionInfo struct and its satellites.

tool

Tool invocation state machine.

Constants

PROTOCOL_VERSION

Wire protocol version this crate speaks.