Issue #142 / Bilan #4 — non-regressive transfer awareness in the
transactions table + clean error mapping on bulk delete.
- `TransactionTable.tsx`: optional new prop
`linkedTransfersByTxId?: Map<txId, links[]>`. When supplied, a small
`<Link2>` icon appears next to the description for every linked
transaction; tooltip lists the account name(s) and direction(s).
Without the prop, the table renders byte-for-byte identical to
before — preserves the spec's non-regression invariant.
- `TransactionsPage.tsx`: loads the linked-transfers map once on mount
via `listAllLinkedTransfersForTooltip()` (one batch SELECT) and
threads it through to the table. Failure to load the map degrades
gracefully to an empty map (icon simply doesn't appear).
- `transactionService.ts`: new `deleteTransaction(id)` helper +
`TransactionLinkedToBalanceError` (typed FK guard). Pre-checks
`balance_account_transfers` before attempting the DELETE so the
error carries the offending account names; falls back to the FK
pattern matcher if a race linked the transaction between the
SELECT and the DELETE.
- `importedFileService.ts`: both bulk delete paths
(`deleteImportWithTransactions`, `deleteAllImportsWithTransactions`)
now pre-check for any linked transfer and surface the same typed
error before they would explode on FK RESTRICT. The pre-check has
a `LIMIT 50` safety cap on the global path.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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