export declare function significantTokens(text: string): Set<string>;
/** True when ≥70% of the utterance's significant tokens appear in `handled`. */
export declare function overlapsHandled(utterance: string, handled: Set<string>): boolean;
/**
 * Only the words the person actually SAID/typed count as handled. Injected
 * chat messages wrap the utterance in scaffolding (a "# Device Activity"
 * preamble with "[hh:mm:ss] you: …" lines, "[reminder: …]" tails) and system
 * events arrive as pure "[bracketed]" user messages — that token soup
 * blanket-matched every short voice follow-up for 90s (observed 2026-07-16:
 * three "how are you, koi?" in a row dropped as already-handled).
 */
export declare function handledUtteranceText(text: string): string;
/**
 * Union of significant tokens across user messages that landed in the
 * session transcript within the last 90s. Tail-reads the JSONL (transcripts
 * grow large); parse failures degrade to "nothing handled".
 */
export declare function recentHandledTokens(transcriptPath: string, nowMs?: number): Set<string>;