/** Durable, project-local transcript storage for subagents. */
import type { AgentSession } from "@earendil-works/pi-coding-agent";
/**
 * Ensure project-local subagent artifacts are ignored by git.
 *
 * The rule is appended instead of rewriting the file. This preserves any
 * existing user-owned rules and makes concurrent callers harmless (duplicate
 * `*` rules are semantically equivalent).
 */
export declare function ensureSubagentsGitignore(cwd: string): string;
/** Return the durable transcript path for an agent. */
export declare function createAgentHistoryPath(cwd: string, agentId: string): string;
/** Return the project-relative path stored in the parent session record. */
export declare function agentHistoryLocator(cwd: string, historyPath: string): string;
/** Resolve only paths in this package's project-local transcript namespace. */
export declare function resolveAgentHistoryPath(cwd: string, locator: string): string | undefined;
/** Return true only when a valid project-local transcript file exists. */
export declare function hasAgentHistory(cwd: string, locator: string | undefined): boolean;
/**
 * Read persisted transcript entries into the message shape used by the live
 * conversation viewer. Malformed lines and unknown records are skipped so one
 * damaged entry cannot hide the rest of a history.
 */
export declare function readAgentHistory(cwd: string, locator: string): AgentSession["messages"] | undefined;
/**
 * Read the last assistant text from a durable transcript. Runtime records may
 * release their in-memory result after the retention TTL; the transcript then
 * becomes the source of truth for get_subagent_result.
 */
export declare function readAgentHistoryResult(cwd: string, locator: string): string | undefined;
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