/**
 * Escape special characters for safe XML embedding.
 */
export declare function escapeXml(s: string): string;
/**
 * Resolve the absolute path to the `vess` executable.
 * LaunchAgents / systemd units run with a minimal PATH that does not
 * include user-installed package managers (pnpm, npm, etc.), so we
 * must embed the full path at install time.
 */
export declare function resolveVessBin(): string;
/**
 * Build a minimal PATH containing only the directories needed for the daemon:
 * the directory of the vess binary, the directory of the node binary, and
 * standard system directories.
 */
export declare function buildMinimalPath(vessBin: string): string;
export interface ServiceInstallOptions {
    port?: number;
    /** Override home directory (for testing) */
    homeDir?: string;
}
export declare class ServiceManager {
    /**
     * Detect current platform.
     */
    static getPlatform(): 'macos' | 'linux' | 'unsupported';
    /**
     * Generate macOS LaunchAgent plist content.
     * Pure function — all values must be provided explicitly.
     */
    static generatePlist(opts: {
        logDir: string;
        port?: number;
        vessBin: string;
        envPath: string;
    }): string;
    /**
     * Generate Linux systemd user unit file content.
     * Pure function — all values must be provided explicitly.
     */
    static generateSystemdUnit(opts: {
        port?: number;
        vessBin: string;
        envPath: string;
    }): string;
    /**
     * Get the path to the service file for the current platform.
     */
    private static getServiceFilePath;
    /**
     * Install as OS service.
     */
    static install(opts?: ServiceInstallOptions): Promise<void>;
    /**
     * Uninstall OS service.
     */
    static uninstall(opts?: {
        homeDir?: string;
    }): Promise<void>;
    /**
     * Check if installed as OS service.
     */
    static isInstalled(opts?: {
        homeDir?: string;
    }): boolean;
}
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