/**
 * Audibility event handler — ADR-172 Phase 7a, ported to engine prose
 * pipeline per ADR-174.
 *
 * Handles `sound.audibility.heard`. Converts each `IAudibilityEvent`
 * (per-listener perception of a propagated sound, produced by the
 * engine's sound dispatcher in Phase 6) into a single text block via
 * the `sound.heard.<kind>.<tier>` template family registered in the
 * active language pack (lang-en-us ships defaults; stories override
 * per kind).
 *
 * Naming discipline:
 *   - `audio`      — Web Audio playback (ADR-169 `AudioManager`).
 *   - `sound`      — the media-cue channel id (`media.sound.play`,
 *                    ADR-163).
 *   - `audibility` — ADR-172 perception of propagated sound, this
 *                    handler.
 *
 * Public interface: `handleAudibilityHeard`.
 *
 * Owner context: `@sharpee/engine` — internal prose pipeline.
 *
 * Listener filtering: in single-user scope today the player is the
 * only entity carrying `ListenerTrait` automatically, so every
 * audibility event delivered here is for the player. The dispatcher
 * already writes the listener id into `event.entities.target`; when
 * L2's NPC-listener work lands, this handler will need to filter
 * `event.entities.target === playerId` before rendering.
 *
 * @see ADR-172 — Spatial Sound Propagation §Channel routing
 * @see ADR-174 §Engine-internal prose pipeline (port from text-service)
 */
import type { ITextBlock } from '@sharpee/text-blocks';
import type { ISemanticEvent } from '@sharpee/core';
import type { HandlerContext } from './types';
/**
 * Handle a `sound.audibility.heard` event.
 *
 * Resolves `sound.heard.<kind>.<tier>` from the language provider,
 * falling back to `sound.heard.default.<tier>` when the kind-specific
 * template is not registered. Returns one `ITextBlock` per event, or
 * `[]` when the event is malformed, the tier is `silent`, or no
 * template resolves.
 */
export declare function handleAudibilityHeard(event: ISemanticEvent, context: HandlerContext): ITextBlock[];
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