/**
 * Local cache for tour JSON fetched from web-ade.
 *
 * Sibling of `./trail-cache.ts`, but simpler: tours don't carry a `repos[]`
 * Purl, and the only id we have on a read is the bare tour id, so the cache is
 * a flat `~/.principal/tours/by-id/<id>.json` layout — writes and reads use the
 * same slot, so a recent fetch is actually reused by the next `view`.
 */
export interface CacheLocation {
    /** Absolute filesystem path to the cached JSON. */
    path: string;
}
/**
 * Write a tour's raw JSON body to its cache slot. Stored verbatim — no
 * re-serialization — so the cached file matches what the server returned.
 */
export declare function write(id: string, body: string): CacheLocation;
/**
 * Read a cached tour by id. Returns `null` when the file is missing or older
 * than `maxAgeMs`. The caller fetches + writes a fresh copy on a miss.
 */
export declare function read(id: string, maxAgeMs: number): {
    body: string;
    path: string;
} | null;
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