/**
 * Fresh-context trigger scan — pure, deterministic signal detection for the
 *
 * The scan is a cheap NL keyword check that runs BEFORE the first planning
 * action. It decides whether the orchestrator should search for fresh
 * context (Context7 → WebSearch) and synthesize ≤5 binding directives to
 * hedge against model training-data lag.
 *
 * Kept free of fs / network / config IO so it is trivially testable. The
 * caller (`fresh-context-commands.ts`) reads the `freshContext.enabled`
 * kill-switch from the config service and passes it in as `enabled`; the
 * pure scan then gates `triggered` on it (enabled=false → no-op, per
 * acceptance criterion #9).
 */
export interface FreshContextPreflightResult {
    /** true when the preflight should run (a signal/force keyword hit AND not killed). */
    triggered: boolean;
    /** true when a force keyword (联网搜 / 查最新 / 搜一下) matched. */
    forced: boolean;
    /** the signal keywords matched in the prompt (case-insensitive). */
    signals: string[];
    /** the `freshContext.enabled` kill-switch value (false → no-op). */
    enabled: boolean;
}
/** Signal keywords — matched case-insensitively as substrings. */
export declare const SIGNAL_KEYWORDS: readonly string[];
/** Force keywords — the user explicitly asks for a live search. */
export declare const FORCE_KEYWORDS: readonly string[];
export declare function scanFreshContextTrigger(prompt: string, enabled: boolean): FreshContextPreflightResult;