/**
 * RedFlagDetector — pure, synchronous, 0-LLM emergency detection (Phase 6, Sprint 3).
 *
 * ADR-2: Detection is deterministic and local. A conservative keyword/phrase match
 * favors escalation reliability over paraphrase coverage. Novel phrasing may return
 * 'none' and proceed to the normal (still-guardrailed) path — this is the accepted risk
 * documented in ADR-2. Pattern set is versioned for auditability.
 *
 * NO async. NO fs. NO network. NO LLM import. Identical input => identical output.
 */
/** Six mutually-exclusive categories; 'none' means no emergency pattern matched. */
export type RedFlagCategory = "cardiac" | "stroke" | "anaphylaxis" | "self-harm" | "overdose" | "none";
/** Result of a single RedFlagDetector.detect() call. */
export interface RedFlagMatch {
    category: RedFlagCategory;
    /**
     * Rule ID that fired (IDs only — never prompt text).
     * Undefined when category === 'none'.
     */
    ruleId?: string;
}
/** Versioned pattern-set identifier recorded in the audit log (ADR-2). */
export declare const PATTERNSET_VERSION = "redflag-2026.06.16";
/**
 * Detects emergency red-flag phrases in a medical prompt.
 *
 * PURE + SYNCHRONOUS. No async, no fs, no network, no LLM import.
 * Identical input => identical RedFlagMatch (asserted by sc-3-5).
 *
 * bober: conservative phrase matching; novel or indirect phrasing may return
 *        'none' and fall through to normal SOP handling (ADR-2 accepted risk).
 */
export declare class RedFlagDetector {
    readonly patternsetVersion = "redflag-2026.06.16";
    /**
     * Returns the first matching RedFlagMatch, or { category: 'none' } if no
     * rule fires. Evaluation order is self-harm → overdose → cardiac → stroke →
     * anaphylaxis so the correct emergency hotline (988 vs 911) is assigned.
     */
    detect(prompt: string): RedFlagMatch;
}
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