Bundle soundfile with native libs in PyInstaller, link LICENSE in README

soundfile needs collect_all() to include libsndfile native library —
hiddenimports alone wasn't enough, causing 'No module named soundfile'
in the frozen sidecar. This is needed for the pyannote Audio patch
that bypasses torchaudio/torchcodec.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

python/voice_to_notes.spec

@@ -12,12 +12,13 @@ faster_whisper_datas, faster_whisper_binaries, faster_whisper_hiddenimports = co
     "faster_whisper"
 )
 pyannote_datas, pyannote_binaries, pyannote_hiddenimports = collect_all("pyannote")
+soundfile_datas, soundfile_binaries, soundfile_hiddenimports = collect_all("soundfile")
 
 a = Analysis(
     ["voice_to_notes/main.py"],
     pathex=[],
-    binaries=ctranslate2_binaries + faster_whisper_binaries + pyannote_binaries,
-    datas=ctranslate2_datas + faster_whisper_datas + pyannote_datas,
+    binaries=ctranslate2_binaries + faster_whisper_binaries + pyannote_binaries + soundfile_binaries,
+    datas=ctranslate2_datas + faster_whisper_datas + pyannote_datas + soundfile_datas,
     hiddenimports=[
         "torch",
         "torchaudio",
@@ -30,7 +31,8 @@ a = Analysis(
     ]
     + ctranslate2_hiddenimports
     + faster_whisper_hiddenimports
-    + pyannote_hiddenimports,
+    + pyannote_hiddenimports
+    + soundfile_hiddenimports,
     hookspath=[],
     hooksconfig={},
     runtime_hooks=[],