import type { SessionDescriptor, SessionPicker } from "./contract.js";
import type { PiUi } from "./ui.js";
/** The keys the picker understands (FR-9). */
export type PickerKey = "up" | "down" | "enter" | "escape";
/** Where the picker takes its keys from. Resolving with null ends the picker. */
export interface KeySource {
    next(): Promise<PickerKey | null>;
}
export interface KeyPickerDeps {
    keys: KeySource;
    ui: PiUi;
}
/** One row of the picker: agent, home, time, title and turn count (FR-11). */
export declare function formatRow(row: SessionDescriptor): string;
/** A picker driven by keys: arrow keys move, Enter selects, Escape cancels (FR-9). */
export declare function createKeyPicker(deps: KeyPickerDeps): SessionPicker;