import type { PressureBand, PressureClassification, PressureClassificationInput, PressureTier } from "./types.js";
/**
 * Return the pressure band for a clamped 0-9 tier.
 *
 * Band boundaries are fixed by the Phase 57 planning contract
 * (`57-CONTRACT-2026-04-30.md` §"Pressure Bands") and **must not** be
 * overridden by workspace policy:
 *
 * - `steady`   — tiers 0-1
 * - `advisory` — tiers 2-4
 * - `gated`    — tiers 5-7
 * - `blocking` — tiers 8-9
 *
 * @param tier - Runtime pressure tier from 0 through 9.
 * @returns The escalation band assigned to the tier.
 *
 * @example
 * ```typescript
 * getPressureBand(2) // "advisory"
 * getPressureBand(6) // "gated"
 * ```
 */
export declare function getPressureBand(tier: PressureTier): PressureBand;
/**
 * Classify runtime pressure into a tier and escalation band.
 *
 * @param input - Direct tier or numeric score to clamp into the 0-9 range.
 * @returns A pure pressure classification.
 */
export declare function classifyRuntimePressure(input?: PressureClassificationInput): PressureClassification;
/**
 * Clamp a numeric pressure value into the 0-9 integer tier range.
 *
 * @param value - Untrusted numeric pressure value.
 * @returns Safe pressure tier.
 */
export declare function clampPressureTier(value: number): PressureTier;
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