the agent's own root unit reads swarm/agents/<agent>/backend-env into /run and
creates it from backendEnvironmentFile with -cas=0 when the store holds nothing.
the shared agent policy gains create (not update) on that one leaf. the harness
and the subagent daemon load the old file first and the fetched one after it.
for each agent the hive looks up its record in agent-closures, fetches the closure's narinfo from the cache with the pull token and checks that a signature by the cache's public key covers it. the result is a log line and the gauge hyperhive.agent.closure_pullable, with a reason label when it is 0. nothing is downloaded and deploys still build locally. part 3 of 3: the probe needs the cache facts and the closure read grant from parts 1 and 2.
hive-c0re reads its cache facts from the store every five minutes and writes /run/hyperhive/attic/{netrc,substituter,public-key}, each 0600. it accepts only an https url, so the pull token never travels in clear. hives get a read grant on the agent-closures bucket, and swarm-queue-client a reader for it. part 2 of 3: nothing uses the files or the reader until the probe lands.
the in-swarm cache stores its address, name and public key beside its tokens, create-only. swarm-controller copies the four cache facts to swarm/hives/<hive>/attic/* every five minutes, with read on the sources and write on the copies. part 1 of 3: nothing reads the copies until the hive reader and probe land.
Prose left stale by the tab moves: the web-ui overview still sent readers to a
schedules page, and the issue report's stylesheet still named its old page
component.
The alerts and issues tabs are one reports tab in the nav. Each page, unchanged
inside, is a card that starts shut and reads nothing until opened; the alerts
header's link, button and refresh picker move into the card's body. /alerts and
/issues redirect to /reports. Docs follow.
The review tab is gone from the nav. Its page, unchanged inside, is a card on
/jobs that starts shut and reads nothing until opened; /review redirects to
/jobs. Docs follow.
The schedules tab is gone from the nav. Its page, unchanged inside, is a card
on /messages under the broadcast card that starts shut and reads nothing until
opened; its add button and refresh picker move into the card's body.
/schedules redirects to /messages. Docs follow.
