export declare const RUNTIME_PROTOCOL_VERSION: 1;
export type RuntimePhase = "starting" | "running" | "stopping" | "failed";
export interface RuntimeMetadata {
    readonly version: typeof RUNTIME_PROTOCOL_VERSION;
    readonly sessionId: string;
    readonly hostPid: number;
    readonly hostIdentity?: string | undefined;
    readonly childPid?: number | undefined;
    readonly childIdentity?: string | undefined;
    readonly socketPath: string;
    readonly token: string;
    readonly cwd: string;
    readonly title?: string | undefined;
    readonly startedAt: string;
    readonly updatedAt: string;
    readonly phase: RuntimePhase;
    readonly busy: boolean;
    readonly active?: boolean | undefined;
    readonly attached: boolean;
    readonly error?: string | undefined;
}
export interface RuntimeView {
    readonly sessionId: string;
    readonly cwd: string;
    readonly title?: string | undefined;
    readonly startedAt: string;
    readonly updatedAt: string;
    readonly phase: RuntimePhase;
    readonly busy: boolean;
    readonly active?: boolean | undefined;
    readonly attached: boolean;
}
export interface RuntimeLaunchSpec {
    readonly file: string;
    readonly args: readonly string[];
}
export interface RuntimeHostPayload {
    readonly version: typeof RUNTIME_PROTOCOL_VERSION;
    readonly sessionId: string;
    readonly cwd: string;
    readonly launch: RuntimeLaunchSpec;
    readonly columns: number;
    readonly rows: number;
    readonly idleTimeoutMs: number;
}
export type RuntimeChannelRole = "probe" | "client-control" | "client-terminal" | "child";
export interface RuntimeAuthFrame {
    readonly version: typeof RUNTIME_PROTOCOL_VERSION;
    readonly type: "auth";
    readonly role: RuntimeChannelRole;
    readonly token: string;
    readonly clientId?: string | undefined;
    readonly columns?: number | undefined;
    readonly rows?: number | undefined;
    readonly supportsRepaint?: boolean | undefined;
}
export interface RuntimeAckFrame {
    readonly version: typeof RUNTIME_PROTOCOL_VERSION;
    readonly type: "ack";
    readonly sessionId: string;
}
export interface RuntimeErrorFrame {
    readonly version: typeof RUNTIME_PROTOCOL_VERSION;
    readonly type: "error";
    readonly message: string;
}
export type RuntimeClientFrame = {
    readonly type: "resize";
    readonly columns: number;
    readonly rows: number;
} | {
    readonly type: "detach";
} | {
    readonly type: "ping";
};
export type RuntimeChildFrame = {
    readonly type: "status";
    readonly sessionId: string;
    readonly cwd: string;
    readonly busy: boolean;
    readonly active?: boolean | undefined;
    readonly title?: string | undefined;
} | {
    readonly type: "minimise";
} | {
    readonly type: "exiting";
    readonly exitCode: number;
} | {
    readonly type: "repaint-result";
    readonly requestId: string;
    readonly accepted: boolean;
} | {
    readonly type: "switch";
    readonly sessionId: string;
    readonly closeCurrent: boolean;
    readonly fresh?: boolean | undefined;
};
export type RuntimeHostFrame = {
    readonly type: "pong";
} | {
    readonly type: "shutdown";
} | {
    readonly type: "repaint";
    readonly requestId: string;
} | {
    readonly type: "detached";
    readonly reason: "minimise" | "requested" | "taken-over" | "connection-lost";
    readonly sessionId: string;
} | {
    readonly type: "switch";
    readonly sessionId: string;
    readonly fresh?: boolean | undefined;
} | {
    readonly type: "exit";
    readonly exitCode: number;
    readonly signal?: string | undefined;
};