import { type Exec } from '../exec.js';
import type { LivenessState, SupervisorBackend } from './types.js';
export declare const UNIT_TEMPLATE = "ours-fleet-agent@.service";
/**
 * Actionable hint when systemctl cannot reach the user bus. After the cli.ts
 * XDG_RUNTIME_DIR fallback this branch stays reachable only when
 * /run/user/<uid> itself is missing — i.e. linger is off and no session is
 * active — so pointing at linger is the correct first hint. (#9)
 */
export declare const busHint: (stderr: string) => string;
export declare const unitFor: (name: string) => string;
/**
 * systemd's own ActiveState vocabulary, classified. `activating` covers
 * `auto-restart` — the unit is mid-restart, not stopped, so its context stands.
 * `deactivating`/`reloading` still have a process. Only `inactive` and `failed`
 * are definite stops. Anything systemd did not report is `unknown`.
 */
export declare function classifyActiveState(activeState: string): LivenessState;
export declare function makeSystemdBackend(exec?: Exec): SupervisorBackend;