Merge main into the Design tab follow-up

main moved the CAD docs into docs/HLSD/design-tab.md and the offer
generator and atlas into scripts/CAD/ (#15803).

- The four docs this branch had edited are deleted as on main. What the
  branch changes about the design goes into the HLSD doc: the right-click
  is judged by drift over the whole press, with no time budget; a Text
  feature stores its outlines as well as its string, font and height; a
  new section on how the Design canvas renders bodies (studio lighting
  through the shared phong shader, B-rep edge ribbons).
- gen_offer_table.py keeps both main's atlas validation and this
  branch's L() markers on user-facing strings.
- The Text verb's hint is now changed in scripts/CAD/tool_atlas.json as
  well, so `gen_offer_table.py --check` passes.
- DesignPanel.cpp keeps the DesignTextDialog include and main's new
  path in the offer comment.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01QK4VgguuCAk2hZLWgcjJb9

src/slic3r/GUI/MainFrame.cpp

@@ -4416,7 +4416,7 @@ void MainFrame::load_printer_url()
         if (auto *device_manager = wxGetApp().getDeviceManager()) {
             auto *machine = device_manager->get_selected_machine();
             if (!machine) {
-                auto machines = device_manager->get_my_machine_list();
+                auto machines = device_manager->get_my_machine_list(device_manager->get_current_printer_agent_id());
                 if (machines.size() == 1)
                     machine = machines.begin()->second;
             }