fix(lighter): query Coinalyze from now-25h to catch delayed hourly buckets

[Flotapponnier]

Summary

• Coinalyze publishes completed hourly buckets ~1h after the hour ends
• Previous code queried from sinceMs (high-water mark), so by the time a bucket was available the window had already moved past it
• Fix: always query from now-25h on every tick; SeenSet dedup prevents double-counting, runner cutoffMs filter still prunes events older than 24h
• Also widens the fetchHourlyCloses window to match the new query range

Test plan

• All existing unit tests pass (go test ./...)
• Lighter should now show non-zero liq rate once Coinalyze has data for the current day