import type { CliAdapter } from './types.js';
/** Return the Reasonix session directory for a working directory. */
export declare function reasonixSessionsDir(cwd: string, sessionRoot?: string): string;
/**
 * Check whether pid belongs to ancestorPid's process tree. Linux reads the
 * parent chain from procfs; other POSIX platforms use one `ps` snapshot.
 */
export declare function isDescendantOf(pid: number, ancestorPid: number): boolean;
/** Match a lease pid against a host process tree, including nested PID namespaces. */
export declare function pidBelongsToProcessTree(pid: number, rootPid: number, procRoot?: string): boolean;
/**
 * Find the session lease owned by the current CLI process tree. The lease file
 * is created at CLI startup, so its stem — the identifier `--resume` accepts —
 * is available before the first prompt. The npm launcher may add an
 * intermediate process; bwrap may add a PID namespace.
 */
export declare function findSessionStemForCli(sessionsDir: string, cliPid: number): string | undefined;
/**
 * Adapter for the Reasonix Bubble Tea TUI.
 *
 * Reasonix does not emit a stable ready marker after each turn, so input uses
 * the standard quiescence detector. Sessions live under
 * `~/.reasonix/projects/<cwd-hash>/sessions`. The lease pid identifies the
 * session file owned by this process tree, and its stem — the same identifier
 * `--resume` accepts, alongside a transcript path or a free-text query — is
 * persisted as the cliSessionId. `reasonix session list` is deliberately NOT
 * used: it reports opaque `session_<hmac>` machine ids that only the
 * `session show|status|recovery` query surface accepts, and it omits a session
 * until its first turn has been persisted. If capture fails, a later restart
 * opens a fresh session because cwd-scoped `--continue` can select another
 * topic's session.
 */
export declare function createReasonixAdapter(pathOverride?: string): CliAdapter;
export declare const create: typeof createReasonixAdapter;
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