Folder-Browser für Workspace-Auswahl, Layout/Style Anpassungen

Endpoints/WorkspaceEndpoint.cs

@@ -38,6 +38,7 @@ public static class WorkspaceEndpoint
     {
         app.MapGet("/api/workspace/tree", HandleTree);
         app.MapGet("/api/workspace/file", HandleFile);
+        app.MapGet("/api/workspace/browse", HandleBrowse);
     }
 
     private static async Task HandleTree(HttpContext ctx)
@@ -157,6 +158,41 @@ public static class WorkspaceEndpoint
         });
     }
 
+    private static async Task HandleBrowse(HttpContext ctx)
+    {
+        var path = ctx.Request.Query["path"].FirstOrDefault() ?? "/";
+
+        var targetPath = Path.GetFullPath(path);
+        if (!Directory.Exists(targetPath))
+        {
+            ctx.Response.StatusCode = 404;
+            await ctx.Response.WriteAsJsonAsync(new { error = "Verzeichnis nicht gefunden" });
+            return;
+        }
+
+        var entries = new List<object>();
+
+        // Parent
+        var parent = Directory.GetParent(targetPath);
+        if (parent != null)
+        {
+            entries.Add(new { name = "..", path = parent.FullName.Replace('\\', '/'), type = "dir" });
+        }
+
+        try
+        {
+            foreach (var dir in Directory.GetDirectories(targetPath).OrderBy(d => Path.GetFileName(d), StringComparer.OrdinalIgnoreCase))
+            {
+                var name = Path.GetFileName(dir);
+                if (IgnoredDirs.Contains(name)) continue;
+                entries.Add(new { name, path = dir.Replace('\\', '/'), type = "dir" });
+            }
+        }
+        catch (UnauthorizedAccessException) { }
+
+        await ctx.Response.WriteAsJsonAsync(new { current = targetPath.Replace('\\', '/'), entries });
+    }
+
     private static bool IsLikelyTextFile(string name)
     {
         var lower = name.ToLowerInvariant();