/**
 * @fileoverview Resolve the path to opensip-tools.config.yml.
 *
 * Resolution order (first match wins):
 *   1. Explicit path — passed from --config CLI flag or programmatic caller.
 *   2. package.json — `opensip-tools.configPath` field at <rootDir>/package.json.
 *   3. Default — <rootDir>/opensip-tools.config.yml.
 *
 * Throws ValidationError if none of the above resolve to an existing file.
 * This is intentional: running fitness checks with no config silently
 * produces zero findings (file-based checks get zero files), which looks
 * green but actually didn't run anything.
 */
/** Canonical filename for the opensip-tools project config. */
export declare const PROJECT_CONFIG_FILENAME = "opensip-tools.config.yml";
/**
 * Resolve the config file path for a given rootDir.
 *
 * @param rootDir - Absolute path to the project root.
 * @param explicitPath - Optional path from `--config` CLI flag. May be
 *   absolute or relative to `rootDir`.
 * @throws {ValidationError} When no config file exists at any resolved
 *   location. The error message enumerates every path attempted so
 *   operators can diagnose without re-running with --debug.
 */
export declare function resolveProjectConfigPath(rootDir: string, explicitPath?: string): string;
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