Expand description
Oracle runtime for Chio cross-currency budget enforcement.
Reads price feeds (Chainlink, Pyth) behind a pluggable backend, caches and
monitors them, applies circuit-breaker thresholds, and converts amounts
across currencies to back budget enforcement with conversion evidence.
Evidence leaves this crate unsigned (ExchangeRate::to_conversion_evidence
sets oracle_public_key and signature to None); signing happens downstream.