- docker-compose.yml: default TORCH_DEVICE=cpu, PORT=8001, named volumes
for model cache (marker-cache) and results (marker-results) with :Z flag
- convert_both.py: API_URL defaults to port 8001, overridable via env
- TODO.md: reflect final decisions (iGPU 30x slower than CPU,
--privileged required for GPU, CPU mode is default)