import { type TuiPane } from "./surface-schema.js";
/** Resolve a pane source safely under the surface root. Null = refuses. */
export declare function resolvePaneSource(root: string, source: string): string | null;
export declare function loadPaneText(pane: TuiPane, root: string): string;
/**
 * Render a pane to styled lines, decluttered and clamped to `budget` visible
 * lines (overflow collapses to "···"). Logs and diffs keep their TAIL;
 * checklists keep the window around the first non-done item; documents keep
 * the top.
 */
export declare function renderPaneLines(pane: TuiPane, root: string, width: number, budget?: number): string[];
export declare function loadPaneTextCached(pane: TuiPane, root: string, now?: number): string;
/** mtime-ish fingerprint for change detection across a surface's sources. */
export declare function paneFingerprint(pane: TuiPane, root: string): string;