fix: keep large-file editing responsive

Bound synchronous full-source syntax parsing, cache dirty comparisons, edit ordinary inline changes in place, retain changed-row undo history, and buffer atomic saves. Skip repository snapshots beyond existing worker limits before copying their text.
2026-10-16 21:14:16 +02:00
parent 02d1422a04
commit adbd2c3f81
13 changed files with 639 additions and 55 deletions
@@ -1844,7 +1844,10 @@ fn column_view_preserves_split_gaps_unified_sides_and_folded_coordinates() {
    let ColumnRow::Text(line) = before.row(1).unwrap() else {
        panic!("unified insertion must paint the after source");
    };
-    assert_eq!((line.text, line.side, line.source_row), (Some("added"), Focus::After, 1));
+    assert_eq!(
+        (line.text, line.side, line.source_row),
+        (Some("added"), Focus::After, 1)
+    );
    assert_eq!(line.numbers, [None, Some(1)]);
    assert!(line.changed);
    assert_eq!(before.native_row(1), None);