When a print fails, DeviceErrorDialog now fetches the printer's captured camera
frame of the failure and shows it in place of the generic HMS illustration,
falling back to the local image and a drawn placeholder on older plugins or errors.
- Agent: add get_hms_snapshot through NetworkAgent / IPrinterAgent (BBL calls the
bound plugin symbol; other agents no-op, so old plugins degrade gracefully).
- DeviceManager: parse and clear m_print_error_img_id from the print-error message.
- Dialog: tiered cloud/local/placeholder image reusing the single image widget,
with a liveness-guarded async callback decoded on the UI thread.
In file included from /run/build/BambuStudio/src/slic3r/GUI/DeviceErrorDialog.cpp:1:
/run/build/BambuStudio/src/slic3r/GUI/DeviceErrorDialog.hpp:78:5: error: ‘wxStaticBitmap’ does not name a type
78 | wxStaticBitmap* m_error_picture;
| ^~~~~~~~~~~~~~
(cherry picked from commit 834d2bc8026e38d7ed1d0bafa3e125baf412a322)
