/**
 * Slugify a note title into a kebab-case filename. ASCII-fallback —
 * non-ASCII chars are stripped because the obsidian adapter walks the
 * vault by filename, and exotic Unicode in paths breaks Windows tools
 * + makes URL routing in the dashboard a future hazard.
 *
 * Empty input → "untitled" so we always produce a valid filename.
 */
export declare function slugify(title: string): string;
/**
 * Pick the next non-colliding slug given an `exists(slug)` predicate.
 * Tries `<base>` first, then `<base>-2`, `<base>-3`, … to a sane cap.
 * Caller-provided existence check keeps this pure — production wires
 * filesystem stat, tests wire a Set.
 */
export declare function pickAvailableSlug(base: string, exists: (candidate: string) => boolean, maxAttempts?: number): string;
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