/**
 * Session registry — maps cwd to the active sessionId.
 *
 * Replaces module-level singletons (_currentCwd, _currentSessionId) with a
 * single Map that is populated at session_start and consulted by event
 * handlers that do not receive ExtensionContext (e.g. turn_end).
 */
export declare function register(cwd: string, sessionId: string): void;
export declare function unregister(cwd: string): void;
export declare function getSessionId(cwd: string): string | undefined;
/**
 * Returns the most recently registered cwd.
 * Used by turn_end handlers that lack ExtensionContext.
 */
export declare function getCwd(): string | undefined;
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