- Add _vulkan_available(): checks /dev/dri/renderD* on Linux, assumes
true on macOS/Windows; set REALESRGAN_NCNN=force to override
- Add _test_ncnn_binary(): test-runs the binary after install and checks
stderr for "no vulkan" — marks skipped if Vulkan init fails at runtime
- ensure_ncnn_installed() now returns early with state=skipped when no
Vulkan detected, avoiding a wasted ~30MB download on CPU-only servers
- Recommend PyTorch CPU when available on headless (AI quality, slow but
works); Lanczos as final fallback
- Frontend: handle state=skipped immediately (no polling needed), show
brief informational toast; show "Headless server" note in dialog
https://claude.ai/code/session_01B58MaJCU1R6KwBDJCp8AfN
Claude
717f482987