nixvim: show dotfiles and hidden files in neo-tree

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

modules/home/nixvim/plugins/ui/neo-tree.nix

@@ -10,6 +10,25 @@
             leave_dirs_open = true;
           };
         };
+        filtered_items = {
+          visible = true;
+          hide_dotfiles = false;
+          hide_gitignored = true;
+          hide_ignored = false;
+          hide_hidden = false;
+
+          hide_by_name = [];
+          hide_by_pattern = [];
+
+          always_show = [];
+          always_show_by_pattern = [];
+
+          never_show = [
+            ".DS_Store"
+            "thumbs.db"
+          ];
+          never_show_by_pattern = [];
+        };
       };
     };
   };