Mercury API: date range unlocks full history; credit-card txns via /credit

Follow-ups to the Mercury API. The account transactions endpoint returns only a small recent slice with just ?limit=500 you MUST pass explicit start=YYYY-MM-DD&end=YYYY-MM-DD to get full history (limit alone returned 7 rows; with a date range the same account returned 67). Credit-card (charge card) spend, which is invisible in the checking account, IS reachable: GET /credit returns the credit account id, then /account/{creditId}/transactions?start=..&end=.. lists every card charge. Each txn.details.creditCardInfo.email and .paymentMethod attribute the spend to a specific cardholder/card, so you can split a shared company card by person.