# packages/domain

Business rules for `nproxy`.

## Implemented in this iteration
- Approximate quota bucket contract: `100/80/60/40/20/0`
- Provider key pool round-robin active-key selection
- Provider attempt classification for retry vs terminal outcomes
- Key-state transition policy for cooldown/manual_review/out_of_funds

## Current exports
- `getApproximateQuotaBucket`
- `isRetryableFailure`
- `evaluateAttempt`
- `selectActiveKeysRoundRobin`
- `buildAttemptPlan`

## Notes
- Domain logic stays provider-agnostic.
- Transport code must live in `packages/providers`.