Add Python version specification and update dependency requirements

- Introduced a new .python-version file specifying Python 3.10
- Updated pyproject.toml to require Python 3.10 instead of 3.13
- Removed scipy from the dependencies list

.python-version

@@ -0,0 +1 @@
+3.10

pyproject.toml

@@ -3,7 +3,7 @@ name = "chx-prototype"
 version = "0.1.0"
 description = "Add your description here"
 readme = "README.md"
-requires-python = ">=3.13"
+requires-python = ">=3.10"
 dependencies = [
     "cn2an>=0.5.23",
     "eng-to-ipa>=0.0.2",
@@ -16,7 +16,6 @@ dependencies = [
     "nltk>=3.9.2",
     "openai-whisper>=20250625",
     "pyopenjtalk>=0.4.1",
-    "scipy>=1.16.2",
     "tokenizers>=0.22.1",
     "torch>=2.9.0",
     "torchaudio>=2.9.0",