Credits & budgets

Omniflare bills on prepaid credits: you top up a balance, and usage across every provider draws down from it on one invoice. An optional overdraft lets traffic keep flowing past a zero balance instead of failing at the worst moment.

Hard spending caps bound the total either way. Once a cap is reached, Omniflare rejects further requests rather than letting a runaway job bill without limit.

TODO: Document top-ups, how overdraft is settled, and where caps are configured.