tests fixes

src/__Libraries/StellaOps.HybridLogicalClock/HybridLogicalClock.cs

@@ -106,8 +106,9 @@ public sealed class HybridLogicalClock : IHybridLogicalClock
         _logger = logger;
         _maxClockSkew = maxClockSkew ?? TimeSpan.FromMinutes(1);
 
-        // Initialize to current physical time
-        _lastPhysicalTime = _timeProvider.GetUtcNow().ToUnixTimeMilliseconds();
+        // Initialize to 0 so first Tick() will advance physical time and reset counter
+        // This follows the standard HLC algorithm where l starts at 0
+        _lastPhysicalTime = 0;
         _logicalCounter = 0;
 
         _logger.LogInformation(