This update replaces older accounting error handling with clearer, standard user-facing error types, helping users receive more consistent messages when something goes wrong. It also lowers the priority of expected warning logs so monitoring tools like Sentry focus on real issues instead of routine user errors.

Using UserError, AccessError, MissingError, ValidationError instead of except_orm and except_osv.
Using _logger.info instead of _logger.warning to avoid polluating Sentry