/**
 * `glen session-start [--agent <agent>]` — called by the agent's SessionStart hook.
 *
 * Behavior:
 * 1. Read stdin (SessionStart event JSON, parsed defensively — tolerate garbage).
 *    Machine-spawned ephemeral sessions (see _utils/ephemeral-session.ts) exit
 *    here with NO output and no side effects.
 * 2. Spawn a detached `glen doctor --auto` (background maintenance; never blocks).
 * 3. Read local credentials + session state.
 * 4. Write ONE JSON object to stdout:
 *    - For claude/codex: `hookSpecificOutput.additionalContext = formatStateLine(state)`
 *      + systemMessage at top level when incognito is ON.
 *    - For `--agent cursor`: flat `{ additional_context }` shape — Cursor's
 *      SessionStart consumes this format; notices (incognito, no-creds, etc.) are
 *      folded into the text rather than a separate systemMessage field.
 *    - no creds      → "[glen] not set up on this machine — ask the user whether
 *      to set up glen, then use the setup skill."
 *    - creds, no org → "[glen] no org selected — ask the user whether to set up
 *      glen, then use the setup skill."
 * 5. Always exit 0 — this hook must never block a session.
 */
declare const sessionStart: (agent?: string) => Promise<void>;
export { sessionStart };