export type HookEvent = "post-edit" | "session-start";
/**
 * Handle the `post-edit` hook event (PostToolUse on Write|Edit|MultiEdit).
 * Returns context to inject when the edited file is model-anchored, empty
 * string otherwise.
 *
 * Fail-soft: callers catch errors and exit 0 with empty output.
 */
export declare function runHookPostEdit(targetDir: string, stdinPayload: string): Promise<string>;
/**
 * Handle the `session-start` hook event (SessionStart). Returns a compact
 * model overview + MCP tool catalogue for the agent's context window.
 * SessionStart output enters the cache and is paid once — can be detailed.
 */
export declare function runHookSessionStart(targetDir: string): Promise<string>;
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