/**
 * $ns Mode — Directive and State
 *
 * Inspired by oh-my-openagent's Ultrawork mode.
 * Detects "$ns" keyword in user messages and injects a
 * maximum-rigor directive into the system prompt.
 *
 * 0-risk: all exports are pure functions or lightweight state objects.
 */
export interface NsModeState {
    /** Whether $ns mode is active for the next system prompt injection */
    active: boolean;
    /** Activate $ns mode */
    activate: () => void;
    /** Deactivate $ns mode (call after injection) */
    deactivate: () => void;
}
export declare function createNsModeState(): NsModeState;
/**
 * Detect $ns keyword in user text.
 * Pattern: $ns at word boundary (e.g., "$ns do X" or "enable $ns mode")
 */
export declare function detectNsMode(text: string): boolean;
/**
 * Get the $ns mode directive.
 * Injected into the system prompt when $ns mode is active.
 */
export declare function getNsDirective(): string;