/**
 * Spells configured acronyms letter-by-letter (`CLI` becomes `c.l.i.`, `CLIs`
 * becomes `c.l.i.s`) so `say` reads initials instead of guessing a word.
 * Already-dotted forms (`C.L.I.`) hold no bare acronym, so they pass through
 * untouched.
 */
export declare function spellAcronyms(text: string): string;
/**
 * Strips common markdown syntax deterministically. Prompt instructions alone
 * don't reliably suppress markdown output from a small summarizer model, so
 * this runs regardless of what the model produced.
 */
export declare function stripMarkdown(text: string): string;
/**
 * Index just past the last sentence-ending punctuation in `text`, or
 * `undefined` when `text` contains no sentence boundary.
 */
export declare function findLastSentenceEnd(text: string): number | undefined;
/**
 * Clips `text` to at most `maxChars`, preferring to cut at the end of the
 * last full sentence over cutting mid-word.
 */
export declare function clipToSentence(text: string, maxChars: number): string;