/**
 * A6 renderers — per-harness SessionStart / SessionEnd hook scripts.
 *
 * These are the artifacts that WRITE the agent-mediation marker file the server
 * reads (`telemetry/agent-marker.ts`). They honor that contract exactly:
 *  - one file per session at `~/.skillsmith/agent-markers/<session_id>.json`
 *    (override via `SKILLSMITH_AGENT_MARKER_DIR`, same knob the server reads);
 *  - atomic write (temp + rename), never a read-modify-write of a shared file;
 *  - required keys `session_id` (non-empty) + `started_at` (epoch-ms), snake_case;
 *  - `agent_session` true, `nudge_origin`/`trigger_id` set by the capped nudge;
 *  - SessionEnd deletes the session's own file (the server's 12h TTL only
 *    backstops a crash).
 *
 * Constraints: self-contained POSIX sh, no dependency on the skillsmith CLI (or
 * any project binary) being on PATH — `jq` is used when present and degraded to
 * a `sed` extraction otherwise. Every path exits 0: a hook must never fail the
 * user's session. The session id is sanitized to `[A-Za-z0-9._-]` so it is safe
 * as both a JSON value and a filename with zero escaping.
 *
 * Hooks are generated only for harnesses with a real SessionStart shell hook
 * ({@link HOOK_HARNESSES}); Hermes has none (spike verified absent) and Windsurf
 * has no hook system.
 */
import type { HarnessId } from './types.js';
/** Render the SessionStart hook for a harness (writes the marker + capped nudge). */
export declare function renderSessionStartHook(harness: HarnessId): string;
/** Render the SessionEnd hook for a harness (deletes this session's marker). */
export declare function renderSessionEndHook(harness: HarnessId): string;
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