news: add defaultEditor entry

Let users know about new variable being set.

Signed-off-by: Austin Horstman <khaneliman12@gmail.com>

modules/misc/news/2025/12/2025-12-11_13-04-30.nix

@@ -0,0 +1,32 @@
+{ config, ... }:
+
+{
+  time = "2025-12-11T19:04:30+00:00";
+  condition =
+    let
+      helixEnabled = config.programs.helix.enable && config.programs.helix.defaultEditor;
+      kakouneEnabled = config.programs.kakoune.enable && config.programs.kakoune.defaultEditor;
+      neovimEnabled = config.programs.neovim.enable && config.programs.neovim.defaultEditor;
+      vimEnabled = config.programs.vim.enable && config.programs.vim.defaultEditor;
+      emacsEnabled = config.services.emacs.enable && config.services.emacs.defaultEditor;
+    in
+    helixEnabled || kakouneEnabled || neovimEnabled || vimEnabled || emacsEnabled;
+  message = ''
+    The 'defaultEditor' option now sets both {env}`EDITOR` and {env}`VISUAL`
+    environment variables.
+
+    Previously, only {env}`EDITOR` was set. The {env}`VISUAL` variable is now
+    also configured to point to the same editor, which is the expected behavior
+    for modern terminal editors.
+
+    This change affects the following modules:
+    - programs.helix
+    - programs.kakoune
+    - programs.neovim
+    - programs.vim
+    - services.emacs
+
+    No action is required. This change should improve compatibility with tools
+    that check {env}`VISUAL` before {env}`EDITOR`.
+  '';
+}