/**
 * Shell completion cache generator.
 *
 * Scans installed photons and writes a grep-friendly cache file
 * at ~/.photon/cache/completions.cache. The shell hook reads this
 * file directly (no Node.js spawn) for fast tab completion.
 *
 * Cache format (line-delimited, grep-friendly):
 *   photon:<name>:<description>
 *   method:<photon>:<method>:<description>
 *   param:<photon>:<method>:<name>:<type>:<required>
 *   instance:<photon>:<name>
 *   stateful:<photon>
 */
export declare const CACHE_DIR: string;
export declare const CACHE_FILE: string;
/**
 * Generate the completions cache file by scanning all installed photons.
 */
export declare function generateCompletionCache(baseDir?: string): Promise<string>;
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