import type{PropertyValues}from'lit';import{type TemplateResult}from'lit';import{LyraElement}from'../../../internal/lyra-element.js';
/**
* `<lr-handoff-divider>` — a labeled semantic separator marking control transfer between agents
* in a transcript ("Transferred to Research Agent"), with an optional agent avatar. Purely
* presentational: no events, no interactivity, no restore semantics.
*
* The computed label is announced once, on first connect, through an internal
* `<lr-live-region>` — a single mount-time announcement is enough since a handoff lands
* mid-stream and there is only ever one thing to say. Later property changes re-render the
* visible/accessible label but never re-announce.
*
* @customElement lr-handoff-divider
* @slot avatar - The incoming agent's `<lr-avatar>` (or icon), at the start of the chip. Hidden
*   entirely while empty.
* @csspart base - The separator root (`role="separator"`).
* @csspart line - Each of the two flanking rules.
* @csspart chip - The visual (`aria-hidden`) chip wrapping the avatar and label.
* @csspart avatar - Wrapper around the `avatar` slot. Only shown while the slot has content.
* @csspart label - The computed label text.
* @status stable
* @since 4.0.0
*/
export declare class LyraHandoffDivider extends LyraElement{static styles:import("lit").CSSResultGroup[];
/** The destination agent now in control. With nothing else set, renders
*  `'Transferred to {agent}'`. */
toAgent:string;
/** Optional source agent. With both `fromAgent` and `toAgent` set, renders `'Transferred from
*  {from} to {to}'` — worded, not an arrow, so RTL needs no mirroring. */
fromAgent:string;
/** Full override, rendered as-is. With nothing set at all, the generic `'Agent handoff'`
*  fallback renders. */
label:string;private hasAvatarSlot;private liveRegion?;protected willUpdate(changed:PropertyValues):void;firstUpdated(changed:PropertyValues):void;private onAvatarSlotChange;private get computedLabel();render():TemplateResult;}declare global{interface HTMLElementTagNameMap{'lr-handoff-divider':LyraHandoffDivider;}}