Options: color book folder shown like the other locations

Options > Files lists the color book folder as a read-only row with Open
folder, like Plot styles or Fonts. The Add folder / Remove buttons, their
messages and the explanatory line (in all 22 locales) are gone; the
folder list stays in the settings for a later location option.

Co-Authored-By: Claude Opus 5.5 <[email protected]>
Claude-Session: https://claude.ai/code/session_013rGmDUNr1hUf4zo1X3dak8

src/ui/window/options.rs

@@ -1773,49 +1773,6 @@ pub fn view_window<'a>(
         .align_y(iced::Center)
     };
 
-    // Searched for `.acb` colour books; editable, unlike the folders above.
-    // Browsers have no folders, so the web build leaves it out.
-    let color_book_locations = |dirs: &'a [String]| -> Element<'a, Message> {
-        if cfg!(target_arch = "wasm32") {
-            return Space::new().into();
-        }
-        let list = dirs
-            .iter()
-            .enumerate()
-            .fold(column![].spacing(6), |list, (i, dir)| {
-                list.push(
-                    row![
-                        text(dir.as_str()).size(11).width(Fill),
-                        button(text(crate::t!("Open folder")).size(11))
-                            .padding([4, 10])
-                            .style(button::secondary)
-                            .on_press(Message::OpenFolder(dir.clone())),
-                        button(text(crate::t!("Remove")).size(11))
-                            .padding([4, 10])
-                            .style(button::secondary)
-                            .on_press(Message::ColorBookDirRemove(i)),
-                    ]
-                    .spacing(10)
-                    .align_y(iced::Center),
-                )
-            });
-        column![
-            text(crate::t!("Color book locations")).size(12),
-            text(crate::t!(
-                "Folders searched for .acb color books. A book loaded in Select Color is copied into the first folder."
-            ))
-            .size(11),
-            list,
-            button(text(crate::t!("Add folder…")).size(11))
-                .padding([4, 10])
-                .style(button::secondary)
-                .on_press(Message::ColorBookDirBrowse),
-            Space::new().height(16),
-        ]
-        .spacing(6)
-        .into()
-    };
-
     let files = column![
         text(crate::t!("Files")).size(15),
         Space::new().height(6),
@@ -1834,8 +1791,14 @@ pub fn view_window<'a>(
         folder_row(crate::t!("Autosave files"), folders.autosave.clone()),
         Space::new().height(12),
         folder_row(crate::t!("Fonts"), folders.fonts.clone()),
+        // Where `.acb` colour books are found (none on the web).
+        color_book_dirs.iter().fold(column![], |rows, dir| rows
+            .push(Space::new().height(12))
+            .push(folder_row(
+                crate::t!("Color book locations"),
+                Some(dir.clone())
+            ))),
         Space::new().height(16),
-        color_book_locations(color_book_dirs),
         text(crate::t!("Default template for new drawings")).size(12),
         Space::new().height(4),
         row![