export interface PluginUpdateLifecycleContext {
    jobId: string;
    previousVersion: string;
    targetVersion: string;
}
export interface PluginUpdateLifecycleDetails {
    durationMs?: number;
    error?: string;
    installedVersion?: string;
    replacementPid?: number;
}
/**
 * Append one process-safe JSON line to the desktop-owned harness log.
 * Logging is diagnostic-only: callers keep the update flow alive when the log cannot be written.
 */
export declare function writePluginUpdateLifecycleLog(logPath: string, context: PluginUpdateLifecycleContext, stage: string, details?: PluginUpdateLifecycleDetails): boolean;
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