X and the toolbar's Construction no longer start a pick tool (Fusion has none): with a selection they convert it, with nothing selected they switch construction mode, outside a sketch they say so. Center Rectangle draws both diagonals as construction, the centre at their crossing, with only the first carrying the midpoint constraint (the second is implied), so a fresh one stays at 4 DOF. Scenarios s30 (pattern a hole) and s32 (cut in the active component) enabled now that b36b332 is on main

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01AS5Tn3xieewUSg3uxrMVdL

crates/ui-egui/src/lib.rs

@@ -420,8 +420,8 @@ impl SolveApp {
             }
         }
         // Construction toggle: selected sketch curves switch at once, otherwise pick them.
-        // Construction (X): convert the selection, or switch construction mode.
-        if id == "sketch.construction" && self.session.active_sketch.is_some() {
+        // Construction (X): convert the selection, or switch construction mode; no pick tool.
+        if id == "sketch.construction" {
             sketch_palette::toggle_construction(self);
             return;
         }