Large-plate previews show up on the first look
On big files, the printer's touchscreen and the mobile app could ask for the file's preview while the printer was still scanning the upload, get nothing, and keep showing a generic icon for that file. Two changes close that window:
- Smaller embedded previews. The thumbnails baked into each plate's G-code are now palette-compressed to about a quarter of their previous size, with no visible difference, so they parse quickly everywhere.
- Upload waits for the scan. The workflow now asks the printer to finish scanning the file's metadata before reporting the upload done, so the preview is ready the moment anything asks for it. Older printer software without that endpoint behaves exactly as before.
No other changes. The print-start safety flow is untouched.