/** Result of a range retrieval. */
export type CaptureRangeResult = {
    readonly ok: true;
    readonly lines: readonly string[];
    readonly totalLines: number;
} | {
    readonly ok: false;
    readonly error: string;
};
/**
 * Registry of opaque capture handles.
 *
 * Maps UUIDs to capture content. Handles are session-scoped — a
 * handle from one session is rejected in another.
 */
export declare class CaptureHandleRegistry {
    private nextId;
    private readonly entries;
    /**
     * Register capture content and return an opaque handle.
     */
    register(sessionId: string, content: string): string;
    /**
     * Retrieve a line range from a capture handle.
     *
     * @param handle - The opaque handle from register()
     * @param sessionId - The requesting session (must match the registering session)
     * @param start - 1-based start line (inclusive)
     * @param end - 1-based end line (inclusive)
     */
    getRange(handle: string, sessionId: string, start: number, end: number): CaptureRangeResult;
}
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