feat(commands): clear, config, version

- clear: clears terminal screen
- config: view and set editor / code-editor preferences
- version: print version and git hash (noz 0.1.0 (abc1234))

NozCli/Commands/ClearCommand.cs

@@ -0,0 +1,16 @@
+using NozCli.Repl;
+
+namespace NozCli.Commands;
+
+public class ClearCommand : ICommand
+{
+    public string Name        => "clear";
+    public string Description => "Clear the terminal screen";
+    public string Usage       => "clear";
+
+    public Task ExecuteAsync(string[] args, ReplContext ctx, CancellationToken ct = default)
+    {
+        Console.Clear();
+        return Task.CompletedTask;
+    }
+}

NozCli/Commands/ConfigCommand.cs

@@ -0,0 +1,64 @@
+using NozCli.Repl;
+using Spectre.Console;
+
+namespace NozCli.Commands;
+
+public class ConfigCommand : ICommand
+{
+    public string Name        => "config";
+    public string Description => "Show or set CLI configuration (editor, code-editor)";
+    public string Usage       => "config [editor|code-editor] [value]";
+
+    public Task ExecuteAsync(string[] args, ReplContext ctx, CancellationToken ct = default)
+    {
+        var cfg = ctx.Config;
+
+        if (args.Length == 0)
+        {
+            // Show current config
+            var editorVal     = cfg.Editor     ?? "[dim](auto)[/]";
+            var codeEditorVal = cfg.CodeEditor ?? "[dim](auto)[/]";
+
+            AnsiConsole.WriteLine();
+            AnsiConsole.MarkupLine($"  [dim grey]editor[/]       {editorVal}");
+            AnsiConsole.MarkupLine($"  [dim grey]code-editor[/]  {codeEditorVal}");
+            AnsiConsole.MarkupLine($"  [dim grey]server[/]       {cfg.ServerUrl}");
+            AnsiConsole.WriteLine();
+            AnsiConsole.MarkupLine("[dim]Set with: config editor <nano|vim|vi|notepad>[/]");
+            AnsiConsole.MarkupLine("[dim]          config code-editor <code|zed|subl|vim>[/]");
+            AnsiConsole.WriteLine();
+            return Task.CompletedTask;
+        }
+
+        var key   = args[0].ToLowerInvariant();
+        var value = args.Length > 1 ? args[1] : null;
+
+        if (value is null)
+        {
+            AnsiConsole.MarkupLine($"[red]Usage: config {key} <value>[/]");
+            return Task.CompletedTask;
+        }
+
+        switch (key)
+        {
+            case "editor":
+                cfg.Editor = value;
+                cfg.Save();
+                AnsiConsole.MarkupLine($"[green]✓[/] editor → [white]{value}[/]");
+                break;
+
+            case "code-editor":
+            case "codeeditor":
+                cfg.CodeEditor = value;
+                cfg.Save();
+                AnsiConsole.MarkupLine($"[green]✓[/] code-editor → [white]{value}[/]");
+                break;
+
+            default:
+                AnsiConsole.MarkupLine($"[red]Unknown key:[/] {key}  [dim](editor, code-editor)[/]");
+                break;
+        }
+
+        return Task.CompletedTask;
+    }
+}

NozCli/Commands/VersionCommand.cs

@@ -0,0 +1,17 @@
+using NozCli.Repl;
+using Spectre.Console;
+
+namespace NozCli.Commands;
+
+public class VersionCommand : ICommand
+{
+    public string Name        => "version";
+    public string Description => "Show noz version info";
+    public string Usage       => "version";
+
+    public Task ExecuteAsync(string[] args, ReplContext ctx, CancellationToken ct = default)
+    {
+        AnsiConsole.MarkupLine($"\n  [bold cyan]noz[/] [white]{VersionInfo.Full}[/]\n");
+        return Task.CompletedTask;
+    }
+}

NozCli/Repl/CommandRegistry.cs

@@ -15,11 +15,16 @@ public class CommandRegistry
             new LsCommand(),
             new CdCommand(),
             new CatCommand(),
+            new NewCommand(),
             new EditCommand(),
             new PushCommand(),
             new SyncCommand(),
             new StatusCommand(),
             new RmCommand(),
+            new ConfigCommand(),
+            new TreeCommand(),
+            new VersionCommand(),
+            new ClearCommand(),
         };
         // HelpCommand gets the full list so it can print them all
         list.Add(new HelpCommand(list));