Tool contract 6.19.2

One note, said in the reader's words.

• war_history's finished_early note said a week "without a standings capture" is null. Capture is our word for how the record is taken, not the reader's; it now says a week "whose standings were never recorded". The flag's outputSchema description gains the in-progress case 6.19.1 added to the note.

Wording only.