feat(lmxproxy): phase 7 — integration test project and test scenarios

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

lmxproxy/tests/ZB.MOM.WW.LmxProxy.Client.IntegrationTests/WriteBatchAndWaitTests.cs

@@ -0,0 +1,26 @@
+using ZB.MOM.WW.LmxProxy.Client.Domain;
+
+namespace ZB.MOM.WW.LmxProxy.Client.IntegrationTests;
+
+public class WriteBatchAndWaitTests : IntegrationTestBase
+{
+    [Fact]
+    public async Task WriteBatchAndWait_TypeAwareComparison()
+    {
+        var values = new Dictionary<string, TypedValue>
+        {
+            ["TestChildObject.TestString"] = new TypedValue { StringValue = "BatchTest" }
+        };
+
+        var response = await Client!.WriteBatchAndWaitAsync(
+            values,
+            flagTag: "TestChildObject.TestString",
+            flagValue: new TypedValue { StringValue = "BatchTest" },
+            timeoutMs: 5000,
+            pollIntervalMs: 200);
+
+        Assert.True(response.Success);
+        Assert.True(response.FlagReached);
+        Assert.True(response.ElapsedMs < 5000);
+    }
+}