FileService.ImportAccountStatementFile now emits Information on the
file being processed and on each account's import count, Warning on
mandator-mismatch skips, and Error on vendor-parser failures. UI-facing
MessageDataset behaviour is unchanged.
Pulls Microsoft.Extensions.Logging.Abstractions into the Services
project; FileServiceTestShould uses NullLogger<FileService>.Instance.
Rest of item 18 (repository logging, MatchOpenBankTransactions
summary) tracked as a follow-up.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
Claudio Schaad
7287dbd440