- Add accountSet() jtx helper and use it (plus existing helpers:
sponsor::As, Oracle, MPTSet, xrpLiquid/accountReserve) instead of
hand-built JSON where a suitable helper already exists
- Add missing coverage: equality at the count() maxU32 boundary,
sb2-side assertions in PaymentSandbox owner-count merge tests,
sequential fee/reserve sponsorship exhaustion across transactions,
reserve-sponsored queue exhaustion in TxQ, and indirect deletion of
an expired sponsored credential
- Drop the redundant self-compare in OwnerCounts equality test
- Move testFeeOnlySponsorshipObjectRouting next to
testCosignedTransferConsumesPrefundedBudget (same precedence rule)
- Add missing check.h include in TxQ_test.cpp