Fix deps: add torchcodec, scipy; cap numpy<2.0

requirements.txt

@@ -1,14 +1,25 @@
+# PyTorch — keep unpinned so HF selects the right CUDA build
 torch
 torchaudio
-spandrel
+torchcodec          # required by torchaudio>=2.5 as default audio loader
+
+# Video upscaling
+spandrel            # Real-ESRGAN loader (no build-time torch dep)
+
+# Audio upscaling
 audiosr
-matplotlib
+matplotlib          # undeclared dep of audiosr.utilities
+scipy               # undeclared dep of audiosr / librosa DSP
+
+# Media I/O
 ffmpeg-python
-gradio==6.14.0
-spaces
-numpy
 opencv-python-headless
 librosa
 soundfile
+
+# App / infra
+gradio==6.14.0
+spaces
+numpy<2.0           # audiosr, scipy, librosa not yet numpy-2.x compatible
 huggingface_hub
 python-dotenv