export interface PaneSnapshot {
    readonly degraded: boolean;
    readonly text: string;
}
/**
 * Read-only tmux pane snapshot for a session's CLI view. Lazily loads the heavy
 * runtime; if it is absent or fails, returns `{degraded:true, text:""}` — never
 * invents output.
 */
export declare function capturePaneSnapshot(tmuxName: string, lines?: number): Promise<PaneSnapshot>;
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