a821f4316a
- Updated `RemoteAuthCredentialStore` to track broker usage accounts across snapshots and streams before account-pool filtering. - Replaced `#countUsageAccounts` with dynamic tracking methods `#replaceBrokerUsageAccounts`, `#upsertBrokerUsageAccount`, and `#removeBrokerUsageAccount`. - Refactored `AuthStorage.#fetchUsageCached` to accept an options object for `timeoutMs` and `forceRefresh`. - Updated dockerignore patterns to exclude `**/.venv/` and ensure depth-agnostic `.env` secret exclusion.