Checking several add-ons of one library in a row reached the registry
only for the first, because the library interval also throttled the
per-add-on tag resolution. The others answered unknown at once, so a
check-all reported one update and the next pass the next one.
The library interval now spares only the library fetch; each add-on is
throttled by its own interval.
Turning on an installed package whose manifest this host refuses now
fails with the typed installed_incompatible cause and a message that
says to upgrade, instead of the generic owner-unavailable 503. The
upgrade of such a package stays allowed.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
