setNow(Date.now()) was called on every query-cache event, including
events dispatched synchronously during ServerWorkspaceRows' render.
On CI, consecutive Date.now() calls cross millisecond boundaries so
each call returns a new value — React always re-renders Sidebar, which
re-renders the layout, which re-renders ServerWorkspaceRows, which
fires more cache events. After ~25 cycles React throws "Maximum update
depth exceeded."
Fix: remove setNow from the cache subscriber. setNow now fires only
from the 30s interval timer, where it correctly refreshes the "X ago"
display text without triggering a render loop.
Also adds a deterministic CI-repro test that mocks Date.now to return
incrementing values and asserts the filter-change path completes without
looping.
7e529c8c44