knowledge_overview answers the page's model as data (reads); knowledge_overview_reread asks one source's verb again by hand, no other, and
records the hand act (acts). A source marked from its verb is asked again alone from 10 seconds, doubling to 5 minutes, its first answer clearing
the mark; one marked from its subscription asks nothing while silent and the verb once on its next event. The module's health carries the page's
last rebuild and says it is degraded while a source is unanswered, staying healthy.
Issue 1968.
Claude-Session: https://claude.ai/code/session_01JG73KJNrH5EgFXMKKYSrig