Fix help option formatting to use comma-space separator instead of pipe

Co-authored-by: danmoseley <[email protected]>

Author: Copilot

src/Shared/CommandLineUtils/CommandLine/CommandLineApplication.cs

@@ -493,11 +493,11 @@ public string GetHelpText(string commandName = null)
 
             optionsBuilder.AppendLine();
             optionsBuilder.AppendLine("Options:");
-            var maxOptLen = options.Max(o => o.Template.Length);
+            var maxOptLen = options.Max(o => o.GetDisplayText().Length);
             var outputFormat = string.Format(CultureInfo.InvariantCulture, "  {{0, -{0}}}{{1}}", maxOptLen + 2);
             foreach (var opt in options)
             {
-                optionsBuilder.AppendFormat(CultureInfo.InvariantCulture, outputFormat, opt.Template, opt.Description);
+                optionsBuilder.AppendFormat(CultureInfo.InvariantCulture, outputFormat, opt.GetDisplayText(), opt.Description);
                 optionsBuilder.AppendLine();
             }
         }

src/Shared/CommandLineUtils/CommandLine/CommandOption.cs

@@ -100,6 +100,35 @@ public string Value()
         return HasValue() ? Values[0] : null;
     }
 
+    public string GetDisplayText()
+    {
+        var parts = new List<string>();
+
+        if (!string.IsNullOrEmpty(SymbolName))
+        {
+            parts.Add($"-{SymbolName}");
+        }
+        
+        if (!string.IsNullOrEmpty(ShortName))
+        {
+            parts.Add($"-{ShortName}");
+        }
+        
+        if (!string.IsNullOrEmpty(LongName))
+        {
+            parts.Add($"--{LongName}");
+        }
+
+        var result = string.Join(", ", parts);
+        
+        if (!string.IsNullOrEmpty(ValueName))
+        {
+            result += $" <{ValueName}>";
+        }
+
+        return result;
+    }
+
     private static bool IsEnglishLetter(char c)
     {
         return (c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z');