Format the tree the way the gate asks for it

`cargo fmt --check` is a required step and had drifted across 45 files. Most of
it arrived this week: several operations were written in parallel worktrees and
merged by hand, and a hand-merge resolves conflicts without ever running the
formatter over the result.

No behaviour changes — this is `cargo fmt --all` and nothing else, kept as its
own commit so the next reader can skip it wholesale rather than search it for
one that matters.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>

ui/dr-ui/src/collections_ui.rs

@@ -548,8 +548,10 @@ pub fn cancel_press(window: &AppWindow, ctl: &Rc<CollectionsController>, ids: &[
     let Some(undo) = ctl.press_undo.borrow_mut().take() else {
         return;
     };
-    let (previous_anchor, cursor) =
-        undo.restore(&mut ctl.selection.borrow_mut(), &mut ctl.anchor.borrow_mut());
+    let (previous_anchor, cursor) = undo.restore(
+        &mut ctl.selection.borrow_mut(),
+        &mut ctl.anchor.borrow_mut(),
+    );
     ctl.previous_anchor.set(previous_anchor);
     ctl.set_cursor(cursor);
     sync_selection(window, ctl, ids);