feat: dim whitespace markers and configure scope and newlines

src/diff.rs

@@ -1140,6 +1140,15 @@ impl DiffState {
             .is_some_and(|file| file.loaded)
     }
 
+    /// Source rows without the editor's virtual terminal row, preserving real empty lines.
+    pub(crate) fn after_source_lines<'a>(&self, file: &'a ChangedFile) -> &'a [String] {
+        if self.live_files.contains(&self.file) {
+            live_content(&file.after, file.after_eof)
+        } else {
+            &file.after
+        }
+    }
+
     fn prepare_selected_file(&mut self) {
         if self.refresh_pending() {
             self.align_file();