fix: Gradio 5 compat - requirements.txt

requirements.txt

@@ -1,9 +1,7 @@
-# ── HF Space runtime deps (must all exist on PyPI) ────────────────────────────
-gradio>=4.44.0
+# ── HF Space runtime deps ──────────────────────────────────────────────────────
+# Gradio 5+ required — Python 3.13 removed audioop/pyaudioop which Gradio 4 used
+gradio>=5.0.0
 matplotlib>=3.9.0
 numpy>=1.26.0
 scipy>=1.13.0
 pandas>=2.2.0
-
-# openenv — install from source if not yet on PyPI:
-# pip install git+https://github.com/openenv/openenv.git