Fix OSError crash from print() on ComfyUI Desktop

[cuzelac]

Summary

• Replace all 25 print() calls in trellis2/pipelines/trellis2_image_to_3d.py with logging.info() to fix a crash when running workflows through the ComfyUI API
• ComfyUI Desktop's --log-stdout flag wraps sys.stdout via comfyui_manager/prestartup_script.py, and its flush() raises OSError: [Errno 22] Invalid argument when the underlying pipe handle goes stale
• Any bare print() during pipeline execution (e.g. model loading messages) triggers this and crashes mesh generation entirely
• The crash does not occur when manually running workflows from the ComfyUI UI — only when submitting them via the API
• logging.info() bypasses the broken stdout wrapper while still producing log output

Traceback

File "...\trellis2\pipelines\trellis2_image_to_3d.py", line 229, in load_image_cond_model
    print('Loading Image Cond model ...')
  → comfyui_manager/prestartup_script.py line 331, sync_write
  → original_stdout.flush()
  → OSError: [Errno 22] Invalid argument

Test plan

• Restart ComfyUI Desktop and submit a workflow using Trellis2MeshWithVoxelAdvancedGenerator via the API
• Confirm it no longer crashes at model loading and proceeds through inference
• Verify status messages still appear in ComfyUI logs
• Confirm manually-run workflows continue to work as before

🤖 Generated with Claude Code