Adds a version picker to the plugin admin panel, on desktop and mobile: every
published version with its own server-computed compatibility verdict, so the
client never re-derives semver range logic.
A deliberate non-latest pick sets an update hold on the row, which keeps the
update banner and "Update all" from immediately nagging the rollback away. The
hold releases when an install lands back on the newest compatible version by any
path, or when the admin resumes updates explicitly. An unresolvable registry
never sets one: refusing to pin on missing information beats silently muting
future updates.
MSheet binds the Escape listener in an effect, so a key fired the moment the
sheet content appears can land before the listener exists. Under a loaded
full-suite run that made the test fail on its own timing. It retries until
the sheet is gone rather than pressing once.
214 items came out of writing the tests. Real defects are corrected, dead code
is removed rather than covered, and the tests that pinned the old behaviour
move with them.
Also drops two agent coverage scratch files that slipped into the coverage PR
and adds the ignore rule that keeps them out.
jubnl