fix: Resolve issues #7, #8, #9 - moviepy, transformers, Whisper OOM

Issue #7: Handle moviepy 2.x removing verbose param from write_audiofile

Issue #8: Pin transformers<5.0.0 to fix summarization pipeline task registry

Issue #9: Add Whisper model memory warnings and OOM error handling

utils/audio_processing.py

@@ -19,7 +19,11 @@ def extract_audio(video_path: Path):
         audio = AudioFileClip(str(video_path))
         temp_dir = tempfile.mkdtemp(prefix="videotranscriber_")
         audio_path = Path(temp_dir) / f"{video_path.stem}_audio.wav"
-        audio.write_audiofile(str(audio_path), verbose=False, logger=None)
+        try:
+            audio.write_audiofile(str(audio_path), logger=None)
+        except TypeError:
+            # moviepy 1.x uses verbose parameter; moviepy 2.x removed it
+            audio.write_audiofile(str(audio_path), verbose=False, logger=None)
         audio.close()
         _temp_audio_files.append(str(audio_path))
         return audio_path