/**
 * Canonical voice configuration shape.
 *
 * Every surface (web, mobile, desktop, spatial) has historically carried its
 * own voice config — with drifted field names (`voiceResponse` vs
 * `voiceResponseEnabled` vs `speakResponses`, `autoSend` vs `voiceAutoSend`)
 * and different subsets of the feature set. This module is the authoritative
 * vocabulary. Surfaces may keep UI-internal state in their own shapes, but
 * anything crossing the SDK boundary — sync, import/export, cross-surface
 * helpers — speaks `VoiceConfig`.
 *
 * Migration helpers are provided for the legacy shapes so each surface can
 * normalize on load without inventing its own migration one-offs.
 */
/**
 * The canonical voice configuration. Narrow, descriptive, surface-agnostic.
 *
 * - `enabled`: master on/off for the voice pipeline (VAD + STT + TTS).
 * - `autoSend`: after a transcription lands, auto-submit without a manual
 *   press. Off means the user edits/approves the transcript first.
 * - `speakResponses`: read agent replies aloud via the TTS backend.
 * - `ttsVoice`: opaque voice identifier — the specific string space depends
 *   on the TTS provider (OpenAI voices, platform voices, …).
 * - `neuralVad`: opt into ML-based VAD where the platform supports it
 *   (currently iOS via Silero). Absent/false uses the default RMS VAD.
 */
export interface VoiceConfig {
    enabled: boolean;
    autoSend: boolean;
    speakResponses: boolean;
    ttsVoice: string;
    neuralVad?: boolean;
}
/** Default voice config — voice off, sensible behavior when it's turned on. */
export declare const DEFAULT_VOICE_CONFIG: VoiceConfig;
/**
 * Normalize any of the historical surface-specific voice shapes onto the
 * canonical `VoiceConfig`. Unknown fields are ignored. Missing fields fall
 * back to `DEFAULT_VOICE_CONFIG`.
 *
 * Accepted legacy keys:
 *   - web:     `{ttsVoice, autoSend, voiceResponse}`
 *   - mobile:  `{voiceEnabled, voiceAutoSend, voiceResponseEnabled, neuralVadEnabled, ttsVoice}`
 *   - desktop: `{ttsVoice, voiceAutoSend, voiceResponseEnabled}`
 *   - spatial: `{voiceEnabled, ttsVoice}`
 *
 * The function is intentionally defensive — it operates on `unknown` because
 * the typical caller is reading from `localStorage` / `AsyncStorage` / a
 * Tauri JSON config, all of which return untyped blobs.
 *
 * @permanent — never remove. Unlike a deprecated-then-sunset API symbol
 * (which has callers we can refactor and ship a removal for), this
 * migration reads persisted user data we can never crawl and rewrite.
 * It must keep working for every `localStorage` / `AsyncStorage` /
 * Tauri JSON config that has ever existed in the wild.
 */
export declare function migrateVoiceConfig(raw: unknown): VoiceConfig;
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