Astra round 4:
- Items aren't checked against the strategy's map, so the strategy and
  page are read again before each batch of items, not only before the
  page: a map change landing between the page and its items now fails
  the capture instead of placing old-map positions.
- A server that needs a newer Icarus now stops sending until it accepts
  this build again, instead of retrying every 15 s.
- A capture moved to the top level because its folder was gone or not
  this account's says so.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>