import { type PathCtx } from '../config/paths.js';
/**
 * Claude keeps transcripts, /resume history, and per-project memories under
 * <config root>/projects. ccx runs sessions under its own config root (so it can
 * swap credentials), which would split that history: /resume in a ccx session
 * would not see sessions from plain `claude`, and vice versa. These helpers make
 * the ccx session root SHARE the user's real ~/.claude data instead of forking it.
 */
/** The user's default claude config root (~/.claude). */
export declare function defaultClaudeRoot(c?: PathCtx): string;
/**
 * Ensure <sessionDir>/projects is a link to ~/.claude/projects so both roots see
 * ONE session/memory store. Self-healing and never lossy:
 * - already a link: done.
 * - missing: link it.
 * - a real directory: move it aside, link, then merge the moved content into the
 *   shared store (hardlink same-volume, copy otherwise; existing files win).
 * - anything locked/busy (a live session): skip now, heal on the next start.
 * Returns true when the link is in place.
 */
export declare function ensureSharedProjects(sessionDir: string, c?: PathCtx): boolean;
/**
 * Merge the user's REAL ~/.claude/settings.json (hooks, permissions, statusline)
 * into the session settings, with the session's own keys (e.g. the model pin)
 * winning on conflict. Without this, ccx sessions silently ran WITHOUT the
 * user's hooks and permission rules. Idempotent; runs each session start so
 * settings edits are picked up.
 */
export declare function mergeUserSettings(sessionDir: string, c?: PathCtx): void;