Fix mute dialog showing truncated query text for blocking alerts

- Collapse newlines in Truncate/TruncateText so detail_text fields
  stay single-line in the label: value format
- Handle multi-line query values in PopulateFromDetailText by
  accumulating continuation lines until the next indented field
- Recognize variant query labels (Blocked Query, Blocking Query,
  Victim SQL) in addition to Query

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: HannahVernon

Dashboard/MainWindow.xaml.cs

@@ -1655,7 +1655,7 @@ await _emailAlertService.TrySendAlertEmailAsync(
         private static string Truncate(string text, int maxLength = 300)
         {
             if (string.IsNullOrEmpty(text)) return "";
-            text = text.Trim();
+            text = text.Replace('\r', ' ').Replace('\n', ' ').Trim();
             return text.Length <= maxLength ? text : text.Substring(0, maxLength) + "...";
         }
 

Dashboard/Models/MuteRule.cs

@@ -102,23 +102,76 @@ public class AlertMuteContext
         /// Extracts context fields (Database, Query, Wait Type, Job Name) from the
         /// structured detail_text stored with each alert. The format is label/value
         /// pairs indented with two spaces, e.g. "  Database: MyDB".
+        /// Query values may span multiple lines and use variant labels
+        /// (Blocked Query, Blocking Query, Victim SQL).
         /// </summary>
         public void PopulateFromDetailText(string? detailText)
         {
             if (string.IsNullOrEmpty(detailText)) return;
 
-            foreach (var line in detailText.Split('\n'))
+            System.Text.StringBuilder? queryBuilder = null;
+            var lines = detailText.Split('\n');
+
+            foreach (var line in lines)
             {
                 var trimmed = line.TrimStart();
+
                 if (DatabaseName == null && trimmed.StartsWith("Database: ", StringComparison.Ordinal))
+                {
+                    FlushQuery(ref queryBuilder);
                     DatabaseName = trimmed.Substring("Database: ".Length).Trim();
-                else if (QueryText == null && trimmed.StartsWith("Query: ", StringComparison.Ordinal))
-                    QueryText = trimmed.Substring("Query: ".Length).Trim();
+                }
                 else if (WaitType == null && trimmed.StartsWith("Wait Type: ", StringComparison.Ordinal))
+                {
+                    FlushQuery(ref queryBuilder);
                     WaitType = trimmed.Substring("Wait Type: ".Length).Trim();
+                }
                 else if (JobName == null && trimmed.StartsWith("Job Name: ", StringComparison.Ordinal))
+                {
+                    FlushQuery(ref queryBuilder);
                     JobName = trimmed.Substring("Job Name: ".Length).Trim();
+                }
+                else if (QueryText == null && queryBuilder == null && TryExtractQueryValue(trimmed, out var qv))
+                {
+                    queryBuilder = new System.Text.StringBuilder(qv);
+                }
+                else if (queryBuilder != null)
+                {
+                    // Continuation lines from multi-line query values don't start
+                    // with the two-space indent used by ContextToDetailText fields.
+                    if (string.IsNullOrWhiteSpace(trimmed) || line.StartsWith("  ", StringComparison.Ordinal))
+                    {
+                        FlushQuery(ref queryBuilder);
+                    }
+                    else
+                    {
+                        queryBuilder.Append(' ').Append(trimmed.Trim());
+                    }
+                }
+            }
+
+            FlushQuery(ref queryBuilder);
+        }
+
+        private void FlushQuery(ref System.Text.StringBuilder? builder)
+        {
+            if (builder != null && QueryText == null)
+                QueryText = builder.ToString();
+            builder = null;
+        }
+
+        private static bool TryExtractQueryValue(string trimmed, out string value)
+        {
+            foreach (var prefix in new[] { "Query: ", "Blocked Query: ", "Blocking Query: ", "Victim SQL: " })
+            {
+                if (trimmed.StartsWith(prefix, StringComparison.Ordinal))
+                {
+                    value = trimmed.Substring(prefix.Length).Trim();
+                    return true;
+                }
             }
+            value = "";
+            return false;
         }
     }
 }

Lite/MainWindow.xaml.cs

@@ -1635,7 +1635,7 @@ await _emailAlertService.TrySendAlertEmailAsync(
         private static string TruncateText(string text, int maxLength = 300)
         {
             if (string.IsNullOrEmpty(text)) return "";
-            text = text.Trim();
+            text = text.Replace('\r', ' ').Replace('\n', ' ').Trim();
             return text.Length <= maxLength ? text : text.Substring(0, maxLength) + "...";
         }
 

Lite/Models/MuteRule.cs

@@ -102,22 +102,75 @@ public class AlertMuteContext
     /// Extracts context fields (Database, Query, Wait Type, Job Name) from the
     /// structured detail_text stored with each alert. The format is label/value
     /// pairs indented with two spaces, e.g. "  Database: MyDB".
+    /// Query values may span multiple lines and use variant labels
+    /// (Blocked Query, Blocking Query, Victim SQL).
     /// </summary>
     public void PopulateFromDetailText(string? detailText)
     {
         if (string.IsNullOrEmpty(detailText)) return;
 
-        foreach (var line in detailText.Split('\n'))
+        System.Text.StringBuilder? queryBuilder = null;
+        var lines = detailText.Split('\n');
+
+        foreach (var line in lines)
         {
             var trimmed = line.TrimStart();
+
             if (DatabaseName == null && trimmed.StartsWith("Database: ", StringComparison.Ordinal))
+            {
+                FlushQuery(ref queryBuilder);
                 DatabaseName = trimmed.Substring("Database: ".Length).Trim();
-            else if (QueryText == null && trimmed.StartsWith("Query: ", StringComparison.Ordinal))
-                QueryText = trimmed.Substring("Query: ".Length).Trim();
+            }
             else if (WaitType == null && trimmed.StartsWith("Wait Type: ", StringComparison.Ordinal))
+            {
+                FlushQuery(ref queryBuilder);
                 WaitType = trimmed.Substring("Wait Type: ".Length).Trim();
+            }
             else if (JobName == null && trimmed.StartsWith("Job Name: ", StringComparison.Ordinal))
+            {
+                FlushQuery(ref queryBuilder);
                 JobName = trimmed.Substring("Job Name: ".Length).Trim();
+            }
+            else if (QueryText == null && queryBuilder == null && TryExtractQueryValue(trimmed, out var qv))
+            {
+                queryBuilder = new System.Text.StringBuilder(qv);
+            }
+            else if (queryBuilder != null)
+            {
+                // Continuation lines from multi-line query values don't start
+                // with the two-space indent used by ContextToDetailText fields.
+                if (string.IsNullOrWhiteSpace(trimmed) || line.StartsWith("  ", StringComparison.Ordinal))
+                {
+                    FlushQuery(ref queryBuilder);
+                }
+                else
+                {
+                    queryBuilder.Append(' ').Append(trimmed.Trim());
+                }
+            }
+        }
+
+        FlushQuery(ref queryBuilder);
+    }
+
+    private void FlushQuery(ref System.Text.StringBuilder? builder)
+    {
+        if (builder != null && QueryText == null)
+            QueryText = builder.ToString();
+        builder = null;
+    }
+
+    private static bool TryExtractQueryValue(string trimmed, out string value)
+    {
+        foreach (var prefix in new[] { "Query: ", "Blocked Query: ", "Blocking Query: ", "Victim SQL: " })
+        {
+            if (trimmed.StartsWith(prefix, StringComparison.Ordinal))
+            {
+                value = trimmed.Substring(prefix.Length).Trim();
+                return true;
+            }
         }
+        value = "";
+        return false;
     }
 }