/**
 * Harness Plugin Loader — discovers and loads harness plugins from
 * configured module specifiers.
 *
 * Plugins are specified in `config.harness.plugins` as an array of:
 *   - Relative paths (resolved from project root)
 *   - Package names (resolved via standard module resolution)
 *
 * Each module must export a `HarnessPlugin`-conformant object as the default
 * export or as a named `plugin` export.
 */
import type { HarnessPlugin } from './plugin-api';
import type { Logger } from '../types';
export interface PluginLoadResult {
    loaded: HarnessPlugin[];
    errors: Array<{
        specifier: string;
        error: string;
    }>;
}
/**
 * Load all harness plugins from the given specifiers.
 * Failures are collected but do not halt loading — each plugin is isolated.
 */
export declare function loadHarnessPlugins(specifiers: string[], projectDir: string, logger: Logger): Promise<PluginLoadResult>;
/**
 * HarnessPluginRegistry — in-memory registry of loaded plugins.
 * Provides convenient accessors for all detectors, truncators, and snapshots.
 */
export declare class HarnessPluginRegistry {
    private plugins;
    register(plugin: HarnessPlugin): void;
    registerAll(plugins: HarnessPlugin[]): void;
    /** All detectors from all registered plugins, in registration order. */
    get detectors(): import("./plugin-api").HarnessDetector[];
    /** All truncators from all registered plugins, in registration order. */
    get truncators(): import("./plugin-api").HarnessTruncator[];
    /** All snapshot providers from all registered plugins, in registration order. */
    get snapshotProviders(): import("./plugin-api").HarnessSnapshotProvider[];
    /** Names of all loaded plugins. */
    get names(): string[];
    get count(): number;
}
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