Rates Engine v0.5.0-rc.42

[v0.5.0-rc.42] — 2026-05-11

Added

• Assets unification — fiat currencies as first-class assets
  (R-018 operator decision 2026-05-11). Six-commit batch:
  • Catalogue extension: internal/currency gains class
    (crypto/stablecoin/fiat), circulating_supply, supply_decimals.
    Seed adds 19 fiat entries (USD, EUR, GBP, JPY, CNY, AUD, CAD,
    CHF, INR, BRL, MXN, KRW, HKD, SGD, ZAR, TRY, NZD, SEK, NOK)
    with M2 figures from central-bank reporting + friendly slugs
    (/assets/us-dollar, /assets/chinese-yuan, …).
  • /v1/assets/{slug} GlobalAssetView gains class,
    circulating_supply, supply_decimals, market_cap_usd.
    Fiat slugs compute market cap via M2 × current FX rate;
    USD identity-cased to 1.00. CNY computes to ≈ $42T, the
    largest M2 globally.
  • /v1/assets/{slug}/{network} sub-route for per-network
    drill-down. Stellar entries 303-redirect to the canonical
    /v1/assets/{asset_id} view; non-Stellar return a thin
    PerNetworkAssetView with the catalogue's contract +
    external block-explorer link.
  • /v1/assets/verified listing now carries market_cap_usd
    for fiat rows (parallel FX fan-out, ~19 lookups per request).
    Crypto / stablecoin rows still skip — their cap lives on
    /v1/assets/{asset_id}.
  • Explorer: /currencies/* → /assets/* CF Pages redirects
    for the full G20+ set. The verified-currency strip on
    /assets now sorts by market_cap_usd descending (CNY first).