Fix build and code structure improvements. New but essential UI functionality. CI improvements. Documentation improvements. AI module improvements.

src/Cli/StellaOps.Cli/Output/IOutputRenderer.cs

@@ -61,15 +61,26 @@ public interface IOutputRenderer
 /// <typeparam name="T">Type of the row item.</typeparam>
 public sealed class ColumnDefinition<T>
 {
+    /// <summary>
+    /// Creates a new column definition.
+    /// </summary>
+    /// <param name="header">Column header text.</param>
+    /// <param name="valueSelector">Function to extract the column value from an item.</param>
+    public ColumnDefinition(string header, Func<T, string?> valueSelector)
+    {
+        Header = header;
+        ValueSelector = valueSelector;
+    }
+
     /// <summary>
     /// Column header text.
     /// </summary>
-    public required string Header { get; init; }
+    public string Header { get; init; }
 
     /// <summary>
     /// Function to extract the column value from an item.
     /// </summary>
-    public required Func<T, string?> ValueSelector { get; init; }
+    public Func<T, string?> ValueSelector { get; init; }
 
     /// <summary>
     /// Optional minimum width for the column.

src/Cli/StellaOps.Cli/Output/OutputRenderer.cs

@@ -282,11 +282,10 @@ public sealed class OutputRenderer : IOutputRenderer
             .Take(8) // Limit to 8 columns for readability
             .ToList();
 
-        return properties.Select(p => new ColumnDefinition<T>
-        {
-            Header = ToHeaderCase(p.Name),
-            ValueSelector = item => p.GetValue(item)?.ToString()
-        }).ToList();
+        return properties.Select(p => new ColumnDefinition<T>(
+            ToHeaderCase(p.Name),
+            item => p.GetValue(item)?.ToString()
+        )).ToList();
     }
 
     private static bool IsSimpleType(Type type)

src/Cli/StellaOps.Cli/Output/OutputRendererExtensions.cs

@@ -0,0 +1,75 @@
+// SPDX-License-Identifier: AGPL-3.0-or-later
+// Extension methods for IOutputRenderer providing synchronous convenience methods.
+
+using System.Text.Json;
+
+namespace StellaOps.Cli.Output;
+
+/// <summary>
+/// Extension methods for IOutputRenderer.
+/// </summary>
+public static class OutputRendererExtensions
+{
+    /// <summary>
+    /// Write a line to console output (synchronous wrapper).
+    /// </summary>
+    public static void WriteLine(this IOutputRenderer renderer, string message)
+    {
+        Console.WriteLine(message);
+    }
+
+    /// <summary>
+    /// Write an empty line to console output.
+    /// </summary>
+    public static void WriteLine(this IOutputRenderer renderer)
+    {
+        Console.WriteLine();
+    }
+
+    /// <summary>
+    /// Write JSON output (synchronous wrapper).
+    /// </summary>
+    public static void WriteJson<T>(this IOutputRenderer renderer, T value)
+    {
+        var json = JsonSerializer.Serialize(value, new JsonSerializerOptions { WriteIndented = true });
+        Console.WriteLine(json);
+    }
+
+    /// <summary>
+    /// Write an error message (synchronous wrapper).
+    /// </summary>
+    public static void WriteError(this IOutputRenderer renderer, string message)
+    {
+        Console.ForegroundColor = ConsoleColor.Red;
+        Console.Error.WriteLine($"Error: {message}");
+        Console.ResetColor();
+    }
+
+    /// <summary>
+    /// Write a success message (synchronous wrapper).
+    /// </summary>
+    public static void WriteSuccess(this IOutputRenderer renderer, string message)
+    {
+        Console.ForegroundColor = ConsoleColor.Green;
+        Console.WriteLine(message);
+        Console.ResetColor();
+    }
+
+    /// <summary>
+    /// Write a warning message (synchronous wrapper).
+    /// </summary>
+    public static void WriteWarning(this IOutputRenderer renderer, string message)
+    {
+        Console.ForegroundColor = ConsoleColor.Yellow;
+        Console.WriteLine($"Warning: {message}");
+        Console.ResetColor();
+    }
+
+    /// <summary>
+    /// Write informational message (synchronous wrapper).
+    /// </summary>
+    public static void WriteInfo(this IOutputRenderer renderer, string message)
+    {
+        Console.WriteLine(message);
+    }
+}