fix(deps): pin pyannote 3.3.2 + torch 2.5.1 to avoid pip resolution-too-deep

- Unbounded pyannote>=3.1 pulled 4.x / torch>=2.8 / opentelemetry graph
- Tighten huggingface_hub and lightning range; document CPU torch two-step

Made-with: Cursor

requirements.txt

@@ -8,6 +8,10 @@ faster-whisper
 imageio-ffmpeg
 psycopg[binary]
 python-dotenv
-# 화자 분리(웹·whisper_stt 공통): torch는 pyannote 의존성으로 설치되며, Linux에서 꼬이면 README·requirements-whisper-stt.txt 참고
-huggingface_hub>=0.26.0
-pyannote.audio>=3.1.0
+# 화자 분리: 버전을 고정하지 않으면 pyannote 4.x + torch>=2.8 + opentelemetry 등으로
+# 의존 그래프가 커져 pip가 «resolution-too-deep» 으로 실패하는 경우가 많습니다.
+huggingface_hub>=0.26.0,<0.29.0
+torch==2.5.1
+torchaudio==2.5.1
+lightning>=2.4.0,<2.5.0
+pyannote.audio==3.3.2