feat(commands): ls with detailed view, tree hierarchy, CancellationToken support

- ls: compact view with status dots and folder markers
- ls -la: table view with status, lang, date, title; folders show mini status bar
- tree: recursive hierarchy using Spectre.Console Tree widget, context-aware
- All commands: CancellationToken threaded through ExecuteAsync
- Partition() helper respects topic-relative slug depth

NozCli/Commands/CatCommand.cs

@@ -9,17 +9,17 @@ public class CatCommand : ICommand
     public string Description => "Print the raw markdown of a note";
     public string Usage       => "cat <slug>";
 
-    public async Task ExecuteAsync(string[] args, ReplContext ctx)
+    public async Task ExecuteAsync(string[] args, ReplContext ctx, CancellationToken ct = default)
     {
         var slug = args.FirstOrDefault();
         if (slug is null) { AnsiConsole.MarkupLine("[red]Usage: cat <slug>[/]"); return; }
 
         slug = ctx.ResolveSlug(slug);
 
+        Core.Models.NoteContent note = default!;
         await AnsiConsole.Status().StartAsync("Fetching…", async _ =>
-        {
+            note = await ctx.Api.GetNoteAsync(slug, ct));
-            var note = await ctx.Api.GetNoteAsync(slug);
+
         AnsiConsole.WriteLine(note.Markdown);
-        });
     }
 }

NozCli/Commands/CdCommand.cs

@@ -9,40 +9,26 @@ public class CdCommand : ICommand
     public string Description => "Navigate into a topic or folder";
     public string Usage       => "cd <folder> | cd .. | cd ~";
 
-    public async Task ExecuteAsync(string[] args, ReplContext ctx)
+    public Task ExecuteAsync(string[] args, ReplContext ctx, CancellationToken ct = default)
     {
-        var target = args.FirstOrDefault();
+        var target = args.FirstOrDefault()?.TrimEnd('/');
 
         if (target is null or "~")
         {
-            ctx.CurrentPath = "~";
+            ctx.CurrentTopic   = null;
-            return;
+            ctx.CurrentSubPath = null;
+            return Task.CompletedTask;
         }
 
         if (target == "..")
         {
-            var parts = ctx.CurrentPath.TrimEnd('/').Split('/');
+            ctx.NavigateUp();
-            ctx.CurrentPath = parts.Length > 1
+            return Task.CompletedTask;
-                ? string.Join("/", parts[..^1])
-                : "~";
-            return;
         }
 
-        var candidate = ctx.CurrentPath == "~"
+        if (!ctx.NavigateTo(target))
-            ? $"~/noosphere/{target}"
-            : $"{ctx.CurrentPath}/{target}";
-
-        // Check the path has at least one note under it
-        var prefix = candidate.Replace("~/noosphere/", "").Replace("~/noosphere", "");
-        var exists = ctx.NoteCache.Any(n => n.Slug.StartsWith(prefix + "/") || n.Slug == prefix);
-
-        if (!exists)
-        {
             AnsiConsole.MarkupLine($"[red]cd: {target}: no such folder[/]");
-            return;
-        }
 
-        ctx.CurrentPath = candidate;
+        return Task.CompletedTask;
-        await Task.CompletedTask;
     }
 }

NozCli/Commands/HelpCommand.cs

@@ -13,7 +13,7 @@ public class HelpCommand : ICommand
 
     public HelpCommand(IReadOnlyList<ICommand> commands) => _commands = commands;
 
-    public Task ExecuteAsync(string[] args, ReplContext ctx)
+    public Task ExecuteAsync(string[] args, ReplContext ctx, CancellationToken ct = default)
     {
         var table = new Table().BorderStyle(Style.Plain).HideHeaders();
         table.AddColumns("cmd", "desc");

NozCli/Commands/ICommand.cs

@@ -8,5 +8,5 @@ public interface ICommand
     string Description { get; }
     string Usage       { get; }
 
-    Task ExecuteAsync(string[] args, ReplContext ctx);
+    Task ExecuteAsync(string[] args, ReplContext ctx, CancellationToken ct = default);
 }

NozCli/Commands/LsCommand.cs

@@ -1,3 +1,4 @@
+using NozCli.Core.Models;
 using NozCli.Repl;
 using Spectre.Console;
 
@@ -7,73 +8,163 @@ public class LsCommand : ICommand
 {
     public string Name        => "ls";
     public string Description => "List notes and folders at current path";
-    public string Usage       => "ls [-l]";
+    public string Usage       => "ls [-la]";
 
-    public async Task ExecuteAsync(string[] args, ReplContext ctx)
+    public async Task ExecuteAsync(string[] args, ReplContext ctx, CancellationToken ct = default)
     {
-        var detailed = args.Contains("-l");
+        var flags    = string.Concat(args.Where(a => a.StartsWith('-')).SelectMany(a => a.TrimStart('-')));
-        var folders  = ctx.FoldersInView().OrderBy(f => f).ToList();
+        var detailed = flags.Contains('l');
-        var prefix   = ctx.PathPrefix();
+        var depth    = ctx.CurrentSubPath is null ? 0 : ctx.CurrentSubPath.Split('/').Length;
 
-        // Determine which segments are folders (have children) vs direct notes
+        var (subFolders, directNotes) = Partition(ctx, depth);
-        var directNotes = ctx.NotesInView()
-            .Where(n =>
-            {
-                var depth = prefix is null ? 0 : prefix.Split('/').Length;
-                return n.Slug.Split('/').Length == depth + 1;
-            })
-            .OrderBy(n => n.Title)
-            .ToList();
-
-        var subFolders = ctx.FoldersInView()
-            .Where(f => directNotes.All(n => n.Slug.Split('/').Last() != f))
-            .OrderBy(f => f)
-            .ToList();
 
         if (!detailed)
         {
-            foreach (var folder in subFolders)
+            RenderShort(ctx, subFolders, directNotes, depth);
-                AnsiConsole.MarkupLine($"  [blue]{folder}/[/]");
-            foreach (var note in directNotes)
-                AnsiConsole.MarkupLine($"  [white]{note.Slug.Split('/').Last()}[/]");
             return;
         }
 
-        var table = new Table().BorderStyle(Style.Plain).HideHeaders();
+        RenderLong(ctx, subFolders, directNotes, depth);
-        table.AddColumns("", "name", "status", "lang", "title");
-
-        foreach (var folder in subFolders)
-        {
-            var count = ctx.NotesInView()
-                .Count(n => n.Slug.StartsWith((prefix is null ? "" : prefix + "/") + folder + "/"));
-            table.AddRow(
-                "[blue]📁[/]",
-                $"[blue]{folder}/[/]",
-                $"[dim]{count} notes[/]",
-                "",
-                ""
-            );
-        }
-
-        foreach (var note in directNotes)
-        {
-            var statusColor = note.Status switch
-            {
-                "seed"      => "yellow",
-                "budding"   => "purple",
-                "evergreen" => "teal",
-                _           => "grey"
-            };
-            table.AddRow(
-                "●",
-                $"[white]{note.Slug.Split('/').Last()}[/]",
-                $"[{statusColor}]{note.Status}[/]",
-                $"[dim]{note.Lang}[/]",
-                $"[dim]{note.Title}[/]"
-            );
-        }
-
-        AnsiConsole.Write(table);
         await Task.CompletedTask;
     }
+
+    // ── Short view ───────────────────────────────────────────────────────────────
+
+    private static void RenderShort(ReplContext ctx, List<string> folders, List<NoteInfo> notes, int depth)
+    {
+        AnsiConsole.WriteLine();
+        foreach (var f in folders)
+            AnsiConsole.MarkupLine($"  [grey46]▸[/]  [white]{Markup.Escape(f)}/[/]");
+
+        if (folders.Count > 0 && notes.Count > 0)
+            AnsiConsole.WriteLine();
+
+        foreach (var n in notes)
+        {
+            var (color, dot) = Style(n.Status);
+            var name = ctx.SlugRelative(n.Slug).Split('/')[depth];
+            AnsiConsole.MarkupLine($"  [{color}]{dot}[/]  [white]{Markup.Escape(name)}[/]");
+        }
+        AnsiConsole.WriteLine();
+    }
+
+    // ── Long view ────────────────────────────────────────────────────────────────
+
+    private static void RenderLong(ReplContext ctx, List<string> folders, List<NoteInfo> notes, int depth)
+    {
+        var term     = Math.Max(Console.WindowWidth, 72);
+        var nameCol  = Math.Clamp(term / 3, 20, 36);
+        var titleCol = Math.Max(16, term - nameCol - 32);
+
+        var table = new Table()
+            .BorderStyle(new Style(new Color(50, 50, 65)))
+            .Border(TableBorder.Simple)
+            .Expand()
+            .AddColumn(new TableColumn("[dim]  [/]")          { Width = 3,        NoWrap = true })
+            .AddColumn(new TableColumn("[dim grey]name[/]")   { Width = nameCol,  NoWrap = true })
+            .AddColumn(new TableColumn("[dim grey]status[/]") { Width = 10,       NoWrap = true })
+            .AddColumn(new TableColumn("[dim grey]lang[/]")   { Width = 5,        NoWrap = true })
+            .AddColumn(new TableColumn("[dim grey]date[/]")   { Width = 12,       NoWrap = true })
+            .AddColumn(new TableColumn("[dim grey]title[/]")  { NoWrap = true });
+
+        foreach (var folder in folders)
+        {
+            var folderNotes = ctx.CurrentTopic is null
+                ? ctx.NoteCache.Where(n => string.Equals(n.Topic, folder, StringComparison.OrdinalIgnoreCase)).ToList()
+                : ctx.NotesInView().Where(n =>
+                {
+                    var rel = ctx.SlugRelative(n.Slug);
+                    return rel.StartsWith(folder + "/") || rel == folder;
+                }).ToList();
+
+            var count    = folderNotes.Count;
+            var countStr = $"{count} {(count == 1 ? "note" : "notes")}";
+            var minibar  = string.Concat(folderNotes.Select(n =>
+            {
+                var (c, d) = Style(n.Status);
+                return $"[{c} dim]{d}[/]";
+            }));
+
+            table.AddRow(
+                "[grey46]▸[/]",
+                $"[bold white]{Markup.Escape(Truncate(folder, nameCol - 1))}/[/]",
+                $"[dim]{countStr}[/]",
+                "", "",
+                minibar
+            );
+        }
+
+        if (folders.Count > 0 && notes.Count > 0)
+            table.AddEmptyRow();
+
+        foreach (var note in notes)
+        {
+            var (color, dot) = Style(note.Status);
+            var name  = Truncate(ctx.SlugRelative(note.Slug).Split('/')[depth], nameCol);
+            var title = Truncate(note.Title, titleCol);
+            var date  = FormatDate(note.Date);
+
+            table.AddRow(
+                $"[{color}]{dot}[/]",
+                $"[white]{Markup.Escape(name)}[/]",
+                $"[{color} dim]{note.Status}[/]",
+                $"[dim]{note.Lang}[/]",
+                $"[dim grey]{date}[/]",
+                $"[dim]{Markup.Escape(title)}[/]"
+            );
+        }
+
+        AnsiConsole.WriteLine();
+        AnsiConsole.Write(table);
+
+        var total = folders.Count + notes.Count;
+        AnsiConsole.MarkupLine($"[dim grey]  {total} {(total == 1 ? "item" : "items")}[/]\n");
+    }
+
+    // ── Helpers ──────────────────────────────────────────────────────────────────
+
+    private static (List<string> folders, List<NoteInfo> notes) Partition(ReplContext ctx, int depth)
+    {
+        if (ctx.CurrentTopic is null)
+            return (ctx.FoldersInView().OrderBy(f => f).ToList(), []);
+
+        var inView = ctx.NotesInView().ToList();
+
+        var notes = inView
+            .Where(n => ctx.SlugRelative(n.Slug).Split('/').Length == depth + 1)
+            .OrderBy(n => ctx.SlugRelative(n.Slug).Split('/')[depth])
+            .ToList();
+
+        var noteSlugs = notes
+            .Select(n => ctx.SlugRelative(n.Slug).Split('/')[depth])
+            .ToHashSet(StringComparer.OrdinalIgnoreCase);
+
+        var folders = inView
+            .Where(n => ctx.SlugRelative(n.Slug).Split('/').Length > depth + 1)
+            .Select(n => ctx.SlugRelative(n.Slug).Split('/')[depth])
+            .Distinct(StringComparer.OrdinalIgnoreCase)
+            .Where(seg => !noteSlugs.Contains(seg))
+            .OrderBy(f => f)
+            .ToList();
+
+        return (folders, notes);
+    }
+
+    private static (string color, string dot) Style(string status) => status switch
+    {
+        "seed"      => ("yellow",  "◦"),
+        "budding"   => ("magenta", "◈"),
+        "evergreen" => ("cyan",    "◉"),
+        _           => ("grey",    "○"),
+    };
+
+    private static string FormatDate(string? date)
+    {
+        if (date is null) return "—";
+        if (DateTime.TryParse(date, out var d)) return d.ToString("yyyy-MM-dd");
+        return date.Length > 10 ? date[..10] : date;
+    }
+
+    private static string Truncate(string s, int max) =>
+        s.Length <= max ? s : s[..(max - 1)] + "…";
 }

NozCli/Commands/RmCommand.cs

@@ -9,7 +9,7 @@ public class RmCommand : ICommand
     public string Description => "Delete a note from the server";
     public string Usage       => "rm <slug>";
 
-    public async Task ExecuteAsync(string[] args, ReplContext ctx)
+    public async Task ExecuteAsync(string[] args, ReplContext ctx, CancellationToken ct = default)
     {
         var slug = args.FirstOrDefault();
         if (slug is null) { AnsiConsole.MarkupLine("[red]Usage: rm <slug>[/]"); return; }
@@ -20,7 +20,7 @@ public class RmCommand : ICommand
             return;
 
         await AnsiConsole.Status().StartAsync("Deleting…", async _ =>
-            await ctx.Api.DeleteNoteAsync(slug));
+            await ctx.Api.DeleteNoteAsync(slug, ct));
 
         ctx.NoteCache.RemoveAll(n => n.Slug == slug);
         AnsiConsole.MarkupLine($"[green]✓[/] {slug} deleted");

NozCli/Commands/StatusCommand.cs

@@ -11,7 +11,7 @@ public class StatusCommand : ICommand
     public string Description => "Show diff between a local folder and the server";
     public string Usage       => "status <local-path>";
 
-    public async Task ExecuteAsync(string[] args, ReplContext ctx)
+    public async Task ExecuteAsync(string[] args, ReplContext ctx, CancellationToken ct = default)
     {
         var localPath = args.FirstOrDefault();
         if (localPath is null) { AnsiConsole.MarkupLine("[red]Usage: status <local-path>[/]"); return; }

NozCli/Commands/TreeCommand.cs

@@ -0,0 +1,154 @@
+using NozCli.Core.Models;
+using NozCli.Repl;
+using Spectre.Console;
+
+namespace NozCli.Commands;
+
+public class TreeCommand : ICommand
+{
+    public string Name        => "tree";
+    public string Description => "Show notes hierarchy as a tree";
+    public string Usage       => "tree";
+
+    public Task ExecuteAsync(string[] args, ReplContext ctx, CancellationToken ct = default)
+    {
+        AnsiConsole.WriteLine();
+
+        if (ctx.CurrentTopic is null)
+            RenderRoot(ctx);
+        else
+            RenderTopic(ctx);
+
+        AnsiConsole.WriteLine();
+        return Task.CompletedTask;
+    }
+
+    // ── Root view: one branch per topic ─────────────────────────────────────────
+
+    private static void RenderRoot(ReplContext ctx)
+    {
+        var root = new Tree($"[bold white]~[/]")
+            .Style(new Style(new Color(80, 80, 100)));
+
+        var topics = ctx.NoteCache
+            .Select(n => n.Topic)
+            .Where(t => !string.IsNullOrEmpty(t))
+            .Distinct(StringComparer.OrdinalIgnoreCase)
+            .Order()
+            .ToList();
+
+        foreach (var topic in topics)
+        {
+            var topicNotes = ctx.NoteCache
+                .Where(n => string.Equals(n.Topic, topic, StringComparison.OrdinalIgnoreCase))
+                .ToList();
+
+            var count    = topicNotes.Count;
+            var countStr = $"[dim grey]{count} {(count == 1 ? "note" : "notes")}[/]";
+            var topicNode = root.AddNode($"[grey46]▸[/]  [bold white]{Markup.Escape(topic)}/[/]  {countStr}");
+
+            AddNotesRecursive(topicNode, topicNotes, topic, null);
+        }
+
+        AnsiConsole.Write(root);
+    }
+
+    // ── Topic view: subtree of current topic / subpath ──────────────────────────
+
+    private static void RenderTopic(ReplContext ctx)
+    {
+        var label = ctx.CurrentSubPath is null
+            ? $"[bold white]~/{ctx.CurrentTopic}/[/]"
+            : $"[bold white]~/{ctx.CurrentTopic}/{ctx.CurrentSubPath}/[/]";
+
+        var root = new Tree(label)
+            .Style(new Style(new Color(80, 80, 100)));
+
+        var notes = ctx.NotesInView().ToList();
+        AddNotesRecursive(root, notes, ctx.CurrentTopic!, ctx.CurrentSubPath);
+
+        AnsiConsole.Write(root);
+    }
+
+    // ── Recursive builder ────────────────────────────────────────────────────────
+
+    private static void AddNotesRecursive(
+        IHasTreeNodes parent,
+        List<NoteInfo> notes,
+        string topic,
+        string? subPath)
+    {
+        var depth       = subPath is null ? 0 : subPath.Split('/').Length;
+        var topicPrefix = topic + "/";
+
+        // Slug relative to the topic root
+        string Relative(string slug) =>
+            slug.StartsWith(topicPrefix, StringComparison.OrdinalIgnoreCase)
+                ? slug[topicPrefix.Length..]
+                : slug;
+
+        // Notes directly at this level
+        var directNotes = notes
+            .Where(n =>
+            {
+                var rel  = Relative(n.Slug);
+                var segs = rel.Split('/');
+                // must be exactly at current depth, and sub-path must match
+                if (segs.Length != depth + 1) return false;
+                if (subPath is null) return true;
+                return rel.StartsWith(subPath + "/") || rel == subPath;
+            })
+            .OrderBy(n => Relative(n.Slug).Split('/')[depth])
+            .ToList();
+
+        // Sub-folders at this level
+        var subFolders = notes
+            .Where(n =>
+            {
+                var rel  = Relative(n.Slug);
+                var segs = rel.Split('/');
+                if (segs.Length <= depth + 1) return false;
+                if (subPath is null) return true;
+                return rel.StartsWith(subPath + "/");
+            })
+            .Select(n => Relative(n.Slug).Split('/')[depth])
+            .Distinct(StringComparer.OrdinalIgnoreCase)
+            .Order()
+            .ToList();
+
+        // Render folders first
+        foreach (var folder in subFolders)
+        {
+            var folderSub   = subPath is null ? folder : $"{subPath}/{folder}";
+            var folderNotes = notes
+                .Where(n =>
+                {
+                    var rel = Relative(n.Slug);
+                    return rel.StartsWith(folderSub + "/") || rel == folderSub;
+                })
+                .ToList();
+
+            var count      = folderNotes.Count;
+            var countStr   = $"[dim grey]{count} {(count == 1 ? "note" : "notes")}[/]";
+            var folderNode = parent.AddNode($"[grey46]▸[/]  [white]{Markup.Escape(folder)}/[/]  {countStr}");
+
+            AddNotesRecursive(folderNode, folderNotes, topic, folderSub);
+        }
+
+        // Then direct notes
+        foreach (var note in directNotes)
+        {
+            var (color, dot) = Style(note.Status);
+            var name = Relative(note.Slug).Split('/')[depth];
+            parent.AddNode($"[{color}]{dot}[/]  [white]{Markup.Escape(name)}[/]  [dim]{Markup.Escape(note.Title)}[/]");
+        }
+    }
+
+    private static (string color, string dot) Style(string status) => status switch
+    {
+        "seed"      => ("yellow",  "◦"),
+        "budding"   => ("magenta", "◈"),
+        "evergreen" => ("cyan",    "◉"),
+        _           => ("grey",    "○"),
+    };
+}