/**
 * Session / project-root resolution shared by every `peaks worktree
 * <spawn|release|renew|list|gc|lease-status>` sub-command.
 *
 * Extracted verbatim from `worktree-lease-commands.ts` so each
 * `worktree-lease-<name>-command.ts` sibling can resolve the same roots
 * without importing the registrar module (the dependency direction stays
 * one-way: siblings → this module → services).
 */
export declare function resolveSessionId(options: {
    session?: string;
}, projectRoot: string): string;
export declare function resolveProjectRoot(options: {
    project?: string;
}): string;
/**
 * Resolve the per-session runtime directory: `<projectRoot>/.peaks/_runtime/<sessionId>`.
 * The runtime tree is gitignored; the spawn CLI writes the lease file
 * under `<this>/worktree-leases/<leaseId>.json` and the worktree itself
 * under `<this>/worktrees/<leaseId>/`.
 */
export declare function joinPathSession(projectRoot: string, sessionId: string): string;