/** Lazy localhost HTTP server: static artifact serving, index page, SSE live reload. */
/** Delivers a composed feedback message to the live session. false/throw → 503. */
export type FeedbackSender = (markdown: string) => boolean;
/** Register (or clear) the feedback sender. Called by the extension per session. */
export declare function setFeedbackSender(fn: FeedbackSender | null): void;
/** URL for a given slug (or index). Starts the server if needed. */
export declare function artifactUrl(slug?: string): Promise<string>;
/** Push a reload event for a slug to all connected SSE clients. No-op if server isn't running. */
export declare function notifyReload(slug: string): void;
/** Refresh review records without reloading the document or losing a draft. */
export declare function notifyAnnotations(slug: string): void;
/** Whether the server is currently running (used by `list` to decide whether to include URLs). */
export declare function isRunning(): boolean;
/** Current port if the server is running, else null. Does NOT start the server. */
export declare function runningPort(): number | null;
/** Start the server if not already running. Returns the port. */
export declare function ensureServer(): Promise<number>;
/** Stop the server (used on session shutdown). */
export declare function stopServer(): void;