jb-multi-currency

Handle Juicebox V5 multi-currency projects (ETH vs USDC accounting). Use when: (1) building UI that displays currency labels (ETH vs USDC), (2) sending transactions that require currency parameter, (3) configuring fund access limits or accounting contexts for new rulesets, (4) querying project balance/surplus with correct token, (5) debugging "wrong currency" issues in payout or allowance transactions, (6) need currency code constants (NATIVE_CURRENCY=61166, USDC varies by chain), (7) cash out modal shows wrong return currency (ETH instead of USDC), (8) need shared chain constants (names, explorers) across multiple modals. Currency in JBAccountingContext is uint32(uint160(tokenAddress)), NOT 1 or 2. Covers baseCurrency detection, decimal handling, terminal accounting, currency codes, dynamic labels, cash out return display, and shared chain constants patterns.