//! Price guard: validate solver outputs against external price sources.
//!
//! This module provides the infrastructure for external price validation:
//!
//! - **guard**: [`PriceGuard`](crate::price_guard::guard::PriceGuard) struct that orchestrates
//! validation of solver solutions
//! - **provider**: [`PriceProvider`](crate::price_guard::provider::PriceProvider) trait and
//! supporting types
//! - **provider\_registry**:
//! [`PriceProviderRegistry`](crate::price_guard::provider_registry::PriceProviderRegistry) for
//! managing multiple providers concurrently
//! - **utils**: Shared utilities for symbol normalization, token resolution, staleness checks, and
//! amount computation
//! - **config**: [`PriceGuardConfig`](crate::price_guard::config::PriceGuardConfig) for tolerance
//! thresholds and fail-open behavior
/// Tolerance thresholds and fail-open configuration for the price guard.
/// Orchestrates validation of solver solutions against external prices.
/// Hyperliquid price provider implementation.
/// [`PriceProvider`](crate::price_guard::provider::PriceProvider) trait and supporting error types.
/// Registry that manages and queries multiple
/// [`PriceProvider`](crate::price_guard::provider::PriceProvider)s concurrently.
/// Shared utilities: symbol normalisation, token resolution, and staleness checks.