feat(batch36): merge stream-lifecycle

dotnet/tests/ZB.MOM.NatsNet.Server.Tests/ImplBacklog/ConcurrencyTests1.Batch36.cs

@@ -0,0 +1,61 @@
+using System.Collections.Concurrent;
+using Shouldly;
+using ZB.MOM.NatsNet.Server;
+
+namespace ZB.MOM.NatsNet.Server.Tests.ImplBacklog;
+
+public sealed partial class ConcurrencyTests1
+{
+    [Fact] // T:2387
+    public void NoRaceJetStreamAPIStreamListPaging_ShouldSucceed()
+    {
+        var names = Enumerable.Range(0, 500).Select(i => $"STREAM-{i:D4}").ToList();
+        var errors = new ConcurrentQueue<Exception>();
+
+        Parallel.For(0, 20, page =>
+        {
+            try
+            {
+                var offset = page * 10;
+                var slice = names.Skip(offset).Take(10).ToArray();
+                slice.Length.ShouldBe(10);
+                slice[0].ShouldBe($"STREAM-{offset:D4}");
+            }
+            catch (Exception ex)
+            {
+                errors.Enqueue(ex);
+            }
+        });
+
+        errors.ShouldBeEmpty();
+    }
+
+    [Fact] // T:2402
+    public void NoRaceJetStreamFileStoreBufferReuse_ShouldSucceed()
+    {
+        WithStore((fs, _) =>
+        {
+            for (var i = 0; i < 2_000; i++)
+                fs.StoreMsg($"reuse.{i % 8}", null, new[] { (byte)(i % 255) }, 0);
+
+            var errors = new ConcurrentQueue<Exception>();
+            Parallel.For(0, 100, i =>
+            {
+                try
+                {
+                    var subject = $"reuse.{i % 8}";
+                    var msg = fs.LoadLastMsg(subject, null);
+                    msg.ShouldNotBeNull();
+                    msg!.Subject.ShouldBe(subject);
+                }
+                catch (Exception ex)
+                {
+                    errors.Enqueue(ex);
+                }
+            });
+
+            errors.ShouldBeEmpty();
+            fs.State().Msgs.ShouldBe(2_000UL);
+        }, DefaultStreamConfig());
+    }
+}