/**
 * [WHO]: getOutputFilePath, writeAgentOutputFile, getTasksDir — file-based output persistence per CC §XI.3
 * [FROM]: Depends on node:fs/promises, node:path for file I/O
 * [TO]: Consumed by ./agent-tool (async execution path)
 * [HERE]: core/sub-agent/agent-output-persistence.ts - Output file persistence per CC §XI.3 (lY/qR6)
 * [COVENANT]: Change output path → update agent-input-output.ts outputFile field
 */
/**
 * Get the tasks directory path.
 * Matches CC's qR6() function: <project>/.claude/tasks/ → <project>/.catui/tasks/
 *
 * Per CC §19: Catui uses .catui/ instead of .claude/
 */
export declare function getTasksDir(cwd: string): string;
/**
 * Get the output file path for an agent.
 * Matches CC's lY() function: qR6() + `<agentId>.output`
 *
 * Per CC §6.2 step 16: outputFile = lY(agentId)
 */
export declare function getOutputFilePath(agentId: string, cwd: string): string;
/**
 * Write the agent's output to a file.
 * Per CC §11.3: async agent results are passed via filesystem.
 * The output file contains the last assistant message's text.
 *
 * Matches CC's async output writing in LS8.
 */
export declare function writeAgentOutputFile(agentId: string, cwd: string, output: string): Promise<string>;
/**
 * Write a structured AgentOutputCompleted to the output file.
 * Used when an async agent completes and writes its final result.
 */
export declare function writeAgentOutputCompleted(agentId: string, cwd: string, output: import("./agent-input-output.js").AgentOutputCompleted): Promise<string>;
/**
 * Read an agent's output file (for checking progress of background agents).
 * Per CC §11.3: parent agent can use Read tool to check the outputFile.
 */
export declare function readAgentOutputFile(agentId: string, cwd: string): Promise<string | undefined>;
/**
 * Check if an agent's output file exists.
 */
export declare function agentOutputFileExists(agentId: string, cwd: string): Promise<boolean>;