gatelineAPI reference
LedgerEntry: BudgetLedgerEntry

The budget ledger's entry, and its parser, now live in @gateline/core/record (#159): Gatehouse's readiness derivation reads the same open entries to know a gate's producer is in flight, and two parsers of one append-only list is how the engine and the frontend come to disagree about what is running. Re-exported under the engine's own names so every call site here reads as it always did.