fix: preserve perpendicular tracking after typed distance

src/app/update/command.rs

@@ -977,7 +977,8 @@ pub(super) fn on_tab_close(&mut self, idx: usize) -> Task<Message> {
         // A tracking ray carries its own base, so it needs no anchor: that is
         // how OTRACK and Extension accepted a bare distance for the *first*
         // point of a command, before any anchor exists.
-        let pt = if let Some((base, dir)) = self.active_distance_ray(i) {
+        let distance_ray = self.active_distance_ray(i);
+        let pt = if let Some((base, dir)) = distance_ray {
             base + dir * dist
         } else {
             let anchor = self.tabs[i]
@@ -1010,6 +1011,9 @@ pub(super) fn on_tab_close(&mut self, idx: usize) -> Task<Message> {
         self.dyn_coord_absolute = false;
         self.sync_dyn_fields();
         self.reset_tracking_after_point();
+        if let Some((_, dir)) = distance_ray {
+            self.snapper.remember_distance_reference(dir);
+        }
         self.push_ucs_to_cmd(i);
 
         let result = self.tabs[i].active_cmd.as_mut().map(|c| c.on_point(pt))?;