maziggy 888891fdc6 Add build plate empty detection feature ...

Automatically detect if objects are on the build plate before printing
and pause the print immediately if detected.

Features:
- Per-printer toggle to enable/disable plate detection
- Multi-reference calibration: store up to 5 reference images per printer
  for different plate types (textured, smooth, high-temp, etc.)
- Automatic print pause when objects detected at print start
- Push notification and WebSocket alert when print is paused
- ROI (Region of Interest) calibration UI with sliders to adjust
  detection area
- Reference management: view thumbnails, add labels, delete references
- Works with both built-in and external cameras
- Uses buffered camera frames when stream is active (no blocking)
- Split button UI: main button opens modal, chevron toggles on/off
- Green visual indicator when plate detection is enabled
- Included in backup/restore

2026-01-26 13:04:29 +01:00

123 KiB

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