/**
 * The active-panel machine (guuey#403 §3) — pure data-in/data-out, no React.
 *
 * ONE law (platform's words): **layout follows attention; transport owns
 * the stream.** The tone tracks the user's locus of action — submit flips
 * it ON SUBMIT (not first token, not completion), navigation flips it back,
 * and stream end changes nothing.
 *
 * State beyond the panel itself (the ggui#633 calibration additions):
 *
 *  - `streaming` — a turn is in flight. Read by ONE rule only: closing an
 *    agent view returns to the menu UNLESS still streaming (the console's
 *    shipped behavior).
 *  - `pending` — the founder's (d) requirement: on flip to the agent tone
 *    with no view mounted yet, the pane must NEVER hold prior page content
 *    on the agent ground — it presents the working state immediately.
 *    `pending` arms on submit and clears on view-mount, on settle (the
 *    answer is in the log even when no view came), and on return-to-menu.
 *
 * The machine is consumed through `useAgentMode()` / the Provider; this
 * module is exported for tests and for non-React hosts that want the exact
 * transition table.
 */
export type ActivePanel = "app" | "agent";
export interface AgentModeState {
    activePanel: ActivePanel;
    /** A turn is in flight (submit → settled). */
    streaming: boolean;
    /** Working-state window: submitted, nothing presented yet (founder (d)). */
    pending: boolean;
}
export declare const INITIAL_AGENT_MODE_STATE: AgentModeState;
export type AgentModeInput = 
/** App-side chrome interaction (NavLink click, panel focus) OR a route change. */
{
    type: "menuInteraction";
}
/** The user sent a message — the agent bridge fired. */
 | {
    type: "agentSubmit";
}
/**
 * Give the agent panel the room WITHOUT claiming a submit happened
 * (guuey#427, the first consumer's near-miss): a host reopening the
 * agent surface (restoring a view, a deep link) wants the tone flip
 * and NOTHING else — arming the working state here would leave a
 * permanent spinner, since no turn will ever mount a view or settle.
 */
 | {
    type: "agentPanelActivated";
}
/** The turn reached `ready`. NO panel transition (platform-ruled: no bounce-back). */
 | {
    type: "agentSettled";
}
/** A live view mounted — the working state has been replaced by content. */
 | {
    type: "agentViewMounted";
}
/** The user closed an agent view (canvas "back" affordance). */
 | {
    type: "agentViewClosed";
};
/**
 * The transition table (§3, verbatim rules). Pure; last input wins — the
 * transition duration is the only debounce (no timers, no queue).
 */
export declare function agentModeReduce(state: AgentModeState, input: AgentModeInput): AgentModeState;
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