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maziggy
3ef5119b7d
Bambuddy's archive cards were blank for every print sliced through the BS or Orca docker sidecars. The "Some recent prints couldn't be archived with thumbnails" banner pointed at install step 4 which is unrelated — that flag only fires on FTP-fetch failures, not on missing-thumb in the sliced 3MF. Root cause is upstream of Bambuddy: neither slicer CLI renders Metadata/plate_N.png when invoked headlessly with --slice --export-3mf. That render is a separate code path triggered by --export-png, which is mutually exclusive with --export-3mf and additionally needs a working display backend (BS 02.07.x's bundled GLFW is hard-locked to Wayland — even XDG_SESSION_TYPE=x11 + GDK_BACKEND=x11 + QT_QPA_PLATFORM=xcb don't switch it back). An Xvfb display in the sidecar wouldn't help even if we wired the second-pass call. The Orca sidecar has been silently shipping thumbnail-less 3MFs from STL inputs since launch; nobody noticed. Fill the gap on the Bambuddy side: new plate_thumbnail.py renders the missing thumbnails after the slice returns. inject_plate_thumbnails_if_missing parses the sliced zip, finds every Metadata/plate_N.gcode entry that doesn't have a matching plate_N.png, loads 3D/3dmodel.model via trimesh, renders an isometric Bambu-green-on-dark view at 512x512 + 128x128 via the same matplotlib Agg pipeline as stl_thumbnail.py, and re-packs the zip with the PNGs injected. Visual style matches Bambuddy's existing library thumbnails — archive cards stay consistent inside Bambuddy rather than chasing parity with desktop Studio's plate render. Best-effort: input bytes are returned unchanged on any failure so the slice flow itself can never fail because of a missing thumbnail. Idempotent: re-running on an already-injected 3MF returns the input verbatim. Wired into both library.py slice paths via result._replace; covers the cross-class merged-multi-plate path automatically (merged bytes flow into the same write site). No sidecar Dockerfile change required — an earlier attempt to install Xvfb in Dockerfile.bambu-studio was a false start and is not part of this drop. Dependencies: trimesh's 3MF loader uses networkx (scene-graph traversal) and lxml (model.xml parse) lazily inside the 3MF code path — both added to requirements.txt because they aren't strict trimesh transitives.