Keyboard-first commands: E/F/H open with the on-canvas value box focused as soon as the geometry is picked (typing replaces the value, Enter applies, Tab moves on, Esc cancels), extrude direction arrow; Extrude takes planar body faces (face: [x,y,z] copies the face boundary into a sketch), so select-face-then-E press-pulls; join/cut previews show the tool body (cut see-through red)

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

crates/ui-egui/src/viewport.rs

@@ -901,6 +901,7 @@ pub fn show(app: &mut SolveApp, ui: &mut egui::Ui) {
     if let Some(tl) = app.tool.as_ref() {
         crate::tools::preview(app, tl, &painter, &proj);
     }
+    crate::canvas::show(app, ui, &painter, &proj);
     view_cube(app, ui, rect);
     nav_bar(app, ui, rect);
     // Status chip.