/**
 * HyDRA embedding input builder — SP-112, SP-138, GitHub #60, #76.
 *
 * Prefixes the latest user turn with session metadata so requirement vectors
 * reflect turn context, not only the latest user string. Prior assistant
 * responses are excluded from the encoder body per HyDRA reference (#76).
 */
import type { RoutingRequest } from '../types/index.js';
import type { TriageResult } from '../triage/triage-engine.js';
/**
 * Build HyDRA encoder input: seven-flag metadata prefix + latest user text.
 *
 * Format: `[turns:N|tools:0|tokens:N|type:...|compact:0|loop:0|attach:0] {text}`
 *
 * Metadata affects capability prediction only; tier selection uses the
 * cluster/feature gate (SP-103) separately.
 */
export declare function buildHydraInput(request: RoutingRequest, triage?: TriageResult): string;
//# sourceMappingURL=hydra-input.d.ts.map