more audit work

src/Notify/__Tests/StellaOps.Notify.Connectors.Teams.Tests/ErrorHandling/TeamsConnectorErrorTests.cs

@@ -132,7 +132,7 @@ public sealed class TeamsConnectorErrorTests
         // Assert
         result.Success.Should().BeFalse();
         result.ShouldRetry.Should().BeFalse("invalid webhook is permanent");
-        result.ErrorCode.Should().Be("WEBHOOK_NOT_FOUND");
+        result.ErrorCode.Should().Be("INVALID_WEBHOOK_URL");
     }
 
     /// <summary>

src/Notify/__Tests/StellaOps.Notify.Connectors.Teams.Tests/Snapshot/TeamsConnectorSnapshotTests.cs

@@ -7,6 +7,7 @@
 // </summary>
 // ---------------------------------------------------------------------
 
+using System.Globalization;
 using System.Reflection;
 using System.Text.Json;
 using System.Text.Json.Nodes;
@@ -373,7 +374,7 @@ public sealed class TeamsNotificationEvent
     public DateTime Timestamp { get; set; }
     public Dictionary<string, object> Payload { get; set; } = new();
     public required TeamsRecipient Recipient { get; set; }
-    public Dictionary<string, string> Metadata { get; set; } = new();
+    public Dictionary<string, object> Metadata { get; set; } = new();
 }
 
 /// <summary>
@@ -462,7 +463,7 @@ public sealed class TeamsFormatter
         var digest = evt.Payload.GetValueOrDefault("image_digest")?.ToString() ?? "unknown";
         var shortDigest = digest.Length > 15 ? $"`{digest[..15]}...`" : $"`{digest}`";
         var scanId = evt.Payload.GetValueOrDefault("scan_id")?.ToString() ?? "unknown";
-        var durationMs = Convert.ToInt64(evt.Payload.GetValueOrDefault("scan_duration_ms") ?? 0);
+        var durationMs = GetPayloadInt64(evt.Payload, "scan_duration_ms");
         var findingsUrl = evt.Payload.GetValueOrDefault("findings_url")?.ToString();
 
         var card = new TeamsMessageCard
@@ -660,6 +661,27 @@ public sealed class TeamsFormatter
             .Replace("<", "&lt;")
             .Replace(">", "&gt;");
     }
+
+    private static long GetPayloadInt64(IReadOnlyDictionary<string, object> payload, string key, long defaultValue = 0)
+    {
+        if (!payload.TryGetValue(key, out var value) || value is null)
+        {
+            return defaultValue;
+        }
+
+        return value switch
+        {
+            long longValue => longValue,
+            int intValue => intValue,
+            JsonElement element => element.ValueKind == JsonValueKind.Number && element.TryGetInt64(out var parsed)
+                ? parsed
+                : defaultValue,
+            string text => long.TryParse(text, NumberStyles.Integer, CultureInfo.InvariantCulture, out var parsed)
+                ? parsed
+                : defaultValue,
+            _ => defaultValue
+        };
+    }
 }
 
 #endregion

src/Notify/__Tests/StellaOps.Notify.Connectors.Teams.Tests/StellaOps.Notify.Connectors.Teams.Tests.csproj

@@ -21,5 +21,14 @@
     <PackageReference Include="FluentAssertions" />
     <PackageReference Include="NSubstitute" />
   </ItemGroup>
+
+  <ItemGroup>
+    <None Include="Fixtures\\**\\*.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+    <None Include="Expected\\**\\*.json">
+      <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+    </None>
+  </ItemGroup>
 </Project>