/**
 * @fileoverview Load and cache opensip-cli.config.yml
 *
 * Reads the signalers config file (path resolved via config-resolution),
 * validates with Zod, and returns a frozen SignalersConfig. Throws when
 * the config file is missing — silent no-op would mask a broken scan.
 */
import type { SignalersConfig } from './types.js';
/**
 * Load and validate opensip-cli.config.yml from the given root directory.
 *
 * SCOPE-FIRST (ADR-0023 one-reader): when the current `RunScope` carries the
 * host-validated config document (`scope.configDocument`, attached by the CLI
 * pre-action hook after its single `readYamlFile`), this loader projects the
 * fitness shape from THAT document — no second file read, no chance of the
 * tool resolving a different file than the host did. The file-read fallback
 * below serves scope-less callers only (programmatic use, unit tests).
 *
 * Fallback resolution: --config (explicit) → <rootDir>/opensip-cli.config.yml.
 * See resolveProjectConfigPath().
 * Results are cached per resolved file path.
 *
 * @param rootDir - Absolute path to the project root directory
 * @param explicitPath - Optional config path from --config CLI flag
 * @throws {ValidationError} When no config is found, YAML is invalid, or
 *   schema validation fails. Intentionally loud: a missing config means
 *   the scan would otherwise silently produce zero findings.
 */
export declare function loadSignalersConfig(rootDir: string, explicitPath?: string): SignalersConfig;
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