fix(jev): a CLI's localhost callback is not a change of product; wait once before handing back none_chosen

[dohooo]

In the daily 51-walk Dosu run the same 23 walks hand back to the supervising agent every day (10-12 to 10-14), and
the supervisor then spends about 34 minutes of the hour on them. Two of the causes are the executor's own rules:

• origin_changed: the walk pins the first page's origin, and a Dosu CLI login opens a tab that ends on
  http://localhost:<port>/callback (or a file:// report page). The steps expect exactly that page, and the walk
  handed it back unread. A page on a loopback host or a local file now counts as the walk's own once the walk has a
  terminal session of its own; any other origin still ends the walk, and a browser-only walk is unchanged. The
  callback's token is masked in Jev's request by the existing query-parameter rule.
• none_chosen: an action round that chose none handed back at once, and a CLI's "Returning to your terminal..."
  page moved on to its callback a second later. It now gets the one wait for the page to move that a checkpoint the
  page settles neither way already gets (movedBeforeHandBack, one mechanism for both); unmoved, it hands back as
  before.

Neither change lets Jev act or pass where it could not: the callback page is judged with the same holds/contradicts
questions, and the wait only reads the page again.

Checks: typecheck, lint (biome + discipline), pi lane. A local executor test (not committed) passes a walk that
lands on a localhost callback with a terminal, still ends one without a terminal or on another site, re-reads a page
that moved after none was chosen and hands back one that did not; on the previous code the two new cases fail and the
controls pass. Browser-only eval regressions on the local stack: qs-notify off/on, hd-xl off and bw-cart on correct;
bw-search-quoted on passed wrongly, which neither changed path touched (no terminal, no none) and which the control
arm also did in earlier rounds.

https://claude.ai/code/session_01QXmSJBFujofueuHrdm6TdA