[jubianchi]

Problem

useNow keeps a module-level now and runs its 30 s interval only while a component is subscribed. When the last subscriber unmounts, the interval stops; the next subscription restarted it without reading the clock, so now kept its old value until the first tick.

Inertia keeps module state across navigations. Spend a few minutes on a page without timestamps (Appearance, Terminal, Safety, About, Terms, Privacy), come back to the log, and for up to 30 s every relative age is behind by the time spent away: a commit posted meanwhile shows "now", older ones look younger, poll countdowns are stretched, then everything jumps at once.

Local check, back from Terminal after ~2 min, Remotes chat undocked (the dock keeps a subscriber alive):

Commit age at first render	Before	After
65 s	now	1m
~5 min	4m	5m

Changes

1. subscribe reads Date.now() when it restarts the interval. One line.
2. tests/Unit/UseNow.test.tsx: mocked useSyncExternalStore and fake timers; subscribe, unsubscribe, move the clock ten minutes, subscribe again, tick once. Red before, green after.
3. The test is listed in tests/draft-images.config.ts and tests/tsconfig.json; trivial conflict with test: run the ten component tests that CI never ran #492, which replaces those lists by globs.

Out of scope, noted for later: with SSR enabled (config/inertia.php), the same module value is the render server's start time until hydration replaces it.