Do not move the lazy-tick marker backward when nowUtc regresses; reject
non-positive catalog durations and break the phase loop when cursor stalls.
Co-authored-by: Cursor <cursoragent@cursor.com>
Fixture reset cleared NPC rows but left a stale lazy-tick marker, causing
catch-up bursts after re-acquire. Reset to MinValue with prototype rows.
Co-authored-by: Cursor <cursoragent@cursor.com>
When simulation is capped, advance LastAdvancedUtc to windowEnd instead
of nowUtc so subsequent polls do not burst through missed NPC cycles.
Co-authored-by: Cursor <cursoragent@cursor.com>
VinPropane