Abin ToppoandClaude Opus 5
86f9647437
The CBS API now exposes a balance endpoint, which it previously did not. Several comments in the codebase asserted that no such endpoint existed anywhere in the API; those are corrected here rather than left to mislead. Balance is fetched lazily, per account, from the Account Details card: - `accounts.balance` endpoint, `CbsAccountBalance` type, and a `getAccountBalance` query with `keepUnusedDataFor: 0` — a balance is the most perishable figure in the app and must not outlive its screen. - The call is triggered by the customer, not by render. Every call reaches the core banking system, and a balance should not appear over someone's shoulder just for opening a screen. - `supportsBalanceEnquiry` gates the control by account type only, with no status check: a dormant savings account cannot be debited but still has a balance. Deposits are excluded because the endpoint does not serve them. - `ACCOUNT_BALANCE_NOT_AVAILABLE` added to the error catalogue as a non-retryable refusal, so the card states it instead of inviting a tap that gets the identical answer. Also carries in-progress work already present in the tree: customer-facing account type labels (`accountTypeLabel`) applied across the account card, selector, mini statement, balance enquiry and MMID screens. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>