feat(batch1): implement proto varint encoder parity

dotnet/src/ZB.MOM.NatsNet.Server/Internal/ProtoWire.cs

@@ -311,4 +311,10 @@ public static class ProtoWire
             (byte)((v >> 56) & 0x7F | 0x80),
             1];
     }
+
+    /// <summary>
+    /// Compatibility mapped entrypoint for PortTracker: <c>protoEncodeVarint</c>.
+    /// </summary>
+    public static byte[] ProtoEncodeVarint(ulong v)
+        => EncodeVarint(v);
 }

dotnet/tests/ZB.MOM.NatsNet.Server.Tests/Internal/ProtoWireTests.cs

@@ -74,4 +74,41 @@ public class ProtoWireTests
         typ.ShouldBe(2);
         size.ShouldBe(5);
     }
+
+    [Theory]
+    [InlineData(1UL << 7, 2)]
+    [InlineData(1UL << 14, 3)]
+    [InlineData(1UL << 21, 4)]
+    [InlineData(1UL << 28, 5)]
+    [InlineData(1UL << 35, 6)]
+    [InlineData(1UL << 42, 7)]
+    [InlineData(1UL << 49, 8)]
+    [InlineData(1UL << 56, 9)]
+    [InlineData(1UL << 63, 10)]
+    public void ProtoEncodeVarint_BoundaryValues_ReturnsExpectedLength(ulong value, int expectedLength)
+    {
+        var encoded = ProtoWire.ProtoEncodeVarint(value);
+
+        encoded.Length.ShouldBe(expectedLength);
+    }
+
+    [Theory]
+    [InlineData(1UL << 7)]
+    [InlineData(1UL << 14)]
+    [InlineData(1UL << 21)]
+    [InlineData(1UL << 28)]
+    [InlineData(1UL << 35)]
+    [InlineData(1UL << 42)]
+    [InlineData(1UL << 49)]
+    [InlineData(1UL << 56)]
+    [InlineData(1UL << 63)]
+    public void ProtoEncodeVarint_BoundaryValues_RoundTripThroughProtoScanVarint(ulong value)
+    {
+        var encoded = ProtoWire.ProtoEncodeVarint(value);
+        var (decoded, size, err) = ProtoWire.ProtoScanVarint(encoded);
+
+        err.ShouldBeNull();
+        size.ShouldBe(encoded.Length);
+        decoded.ShouldBe(value);
+    }
 }

reports/current.md

@@ -1,6 +1,6 @@
 # NATS .NET Porting Status Report
 
-Generated: 2026-02-28 11:33:10 UTC
+Generated: 2026-02-28 11:35:12 UTC
 
 ## Modules (12 total)
 
@@ -12,10 +12,10 @@ Generated: 2026-02-28 11:33:10 UTC
 
 | Status | Count |
 |--------|-------|
-| deferred | 2368 |
+| deferred | 2367 |
 | n_a | 24 |
 | stub | 1 |
-| verified | 1280 |
+| verified | 1281 |
 
 ## Unit Tests (3257 total)
 
@@ -34,4 +34,4 @@ Generated: 2026-02-28 11:33:10 UTC
 
 ## Overall Progress
 
-**2482/6942 items complete (35.8%)**
+**2483/6942 items complete (35.8%)**

reports/report_c1ae46f.md

@@ -0,0 +1,37 @@
+# NATS .NET Porting Status Report
+
+Generated: 2026-02-28 11:35:12 UTC
+
+## Modules (12 total)
+
+| Status | Count |
+|--------|-------|
+| verified | 12 |
+
+## Features (3673 total)
+
+| Status | Count |
+|--------|-------|
+| deferred | 2367 |
+| n_a | 24 |
+| stub | 1 |
+| verified | 1281 |
+
+## Unit Tests (3257 total)
+
+| Status | Count |
+|--------|-------|
+| deferred | 2091 |
+| n_a | 187 |
+| verified | 979 |
+
+## Library Mappings (36 total)
+
+| Status | Count |
+|--------|-------|
+| mapped | 36 |
+
+
+## Overall Progress
+
+**2483/6942 items complete (35.8%)**