StemRoller: desktop stem separator, Android stems player, and server daemons

- stemroller/: PySide6/QML desktop app and player for separating music into stems
- android/: Plex music player that plays per-stem mixes, with Android Auto support,
  a graphic + parametric (Equalizer APO-style) EQ, and offline downloads
- server/: stemserve (serves stems to the app) and stemd (separates the library on
  the server's GPU, with "Stem Now" priority requests)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

server/stemd-requirements.txt

@@ -0,0 +1,73 @@
+# stemd's Python deps, pinned to match uv.lock (torch and torchvision come from the CUDA index; see stemd.Dockerfile).
+# Regenerate: uv export --frozen --no-hashes --no-emit-project --no-header --no-annotate \
+#   | grep -vE '^(torch|torchvision|triton-rocm|pyside6|pyside6-addons|pyside6-essentials|shiboken6|sounddevice)[=@ ]' | sed 's/ ;.*//' \
+#   | sed 's#^demucs @ git+\(.*\)@\(.*\)#demucs @ \1/archive/\2.tar.gz#'  (no git in the image)
+absl-py==2.5.0
+anyio==4.15.1
+audio-separator==0.47.0
+audioread==3.1.0
+beartype==0.18.5
+certifi==2026.7.22
+cffi==2.1.1
+charset-normalizer==3.5.2
+click==8.5.0
+cloudpickle==3.1.2
+cython==3.3.0
+decorator==5.3.1
+demucs @ https://github.com/adefossez/demucs/archive/2883f3db65617d6d178c6ed10d869dc14e44e59b.tar.gz
+diffq==0.2.4
+einops==0.8.2
+filelock==4.0.12
+flatbuffers==25.12.19
+fsspec==2026.9.0
+h11==0.16.0
+hf-xet==1.7.0
+httpcore2==2.13.1
+httpx2==2.13.1
+huggingface-hub==2.1.1
+idna==3.20
+jinja2==3.1.6
+joblib==1.6.0
+julius==0.2.8
+lameenc==1.8.4
+lazy-loader==0.6
+librosa==1.0.0
+llvmlite==0.50.0
+markupsafe==3.0.4
+ml-collections==1.1.0
+ml-dtypes==0.6.0
+mpmath==1.3.0
+msgpack==1.2.3
+narwhals==2.26.0
+networkx==3.7
+numba==0.68.0
+numpy==2.5.3
+onnx-weekly==1.24.0.dev20261005
+onnx2torch-py313==1.6.0
+onnxruntime==1.30.0
+packaging==26.3
+pillow==12.3.0
+platformdirs==4.12.4
+pooch==1.9.0
+protobuf==7.36.2
+pycparser==3.0
+pydub==0.25.1
+pyyaml==6.0.3
+requests==2.34.2
+resampy==0.4.3
+rotary-embedding-torch==0.6.5
+safetensors==0.8.0
+samplerate==0.1.0
+scikit-learn==1.9.1
+scipy==1.18.1
+setuptools==84.0.0
+six==1.17.0
+soundfile==0.14.0
+soxr==1.1.0
+sphn==0.2.1
+sympy==1.14.0
+threadpoolctl==3.7.0
+tqdm==4.70.1
+truststore==0.10.4
+typing-extensions==4.16.0
+urllib3==2.8.0