The registry's answer was cached and served as-is, so the stack view and the
machine-wide list kept calling an image behind after an update had pulled it.
The cache now keeps the digest the registry named, and an image marked behind
is re-checked locally on every read: once this machine holds that digest it
is current, at no registry cost. The page re-reads the machine-wide answer
after a stack task, a queued update, or a schedule run.
Also: stack keys can no longer collide with the machine key, and the dead
"/"+stack forget in the schedule runner is gone.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
