fix: UCS FACE/OBJECT pick from the interactive prompt; reuse ocs_axes

Follow-up to #1341:
- interactive UCS offers Face / OBject; bare UCS OBJECT starts an entity pick
- one UcsPickCommand serves both FACE and OBJECT
- ucs_from_normal calls the existing arbitrary-axis helper instead of a copy
- prompt catalogue key and en-US text follow the new option list

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>

src/app/commands/layerprops.rs

@@ -338,7 +338,7 @@ impl OpenCADStudio {
                             // surface point, so both entry points share the
                             // plane construction below.
                             None => {
-                                let picker = crate::command::UcsFaceCommand;
+                                let picker = crate::command::UcsPickCommand { face: true };
                                 self.command_line.push_info(&picker.prompt());
                                 self.tabs[i].active_cmd = Some(Box::new(picker));
                             }
@@ -386,9 +386,13 @@ impl OpenCADStudio {
                             })
                             .map(acadrust::Handle::new);
                         match target {
-                            None => self
-                                .command_line
-                                .push_error(crate::t!("Usage: UCS OBJECT <handle>").as_ref()),
+                            // Bare `UCS OBJECT` starts the pick; the click
+                            // comes back through this arm with the handle.
+                            None => {
+                                let picker = crate::command::UcsPickCommand { face: false };
+                                self.command_line.push_info(&picker.prompt());
+                                self.tabs[i].active_cmd = Some(Box::new(picker));
+                            }
                             Some(handle) => {
                                 let built = self.tabs[i]
                                     .scene

src/app/commands/mod.rs

@@ -739,9 +739,10 @@ inventory::submit!(crate::command::CommandRegistration {
         "SELSIM",
         // Draw a new object of the same type as the selected one. (#239)
         "ADDSELECTED",
+        // Outline of origin planes, open sketch and solid bodies.
+        "BROWSER",
         // Open and close a sketch: a drawing plane, a square-on view and
         // snapping, held together until the profile is done.
-        "BROWSER",
         "CREATESKETCH",
         "FINISHSKETCH",
         "SHEETSET",