Review Tax Return

Everything that has to be right before a client's tax return is sent: every income source's obligations, reporting setup, held position, year-end submission and adjustable summaries; all their other income; losses; liability adjustments where the year has them; HMRC's calculation; and the declaration with whatever is standing in the way. This is thirty or more HMRC requests behind one call, so it is slow the first time a year is opened and fast afterwards. Pass refresh=true to ask HMRC again rather than reuse cached answers — only ever from an explicit action by the user. Anything named in unavailableParts could not be read from HMRC; it never means HMRC hold nothing.