feat: adiciona Silero VAD local com configuração por ambiente

pyproject.toml

@@ -17,6 +17,8 @@ dependencies = [
     "pytest>=9.1.1",
     "python-dotenv>=1.2.3",
     "requests>=2.34.2",
+    "silero-vad[onnx-cpu]==6.2.3",
+    "torch>=2.2,<3",
     "uvicorn[standard]>=0.53.0",
     "websockets>=15.0.1,<16",
 ]
@@ -33,3 +35,14 @@ pythonpath = ["src"]
 dev = [
     "ruff>=0.16.10",
 ]
+
+
+[[tool.uv.index]]
+name = "pytorch-cpu"
+url = "https://download.pytorch.org/whl/cpu"
+explicit = true
+
+[tool.uv.sources]
+torch = [
+    { index = "pytorch-cpu", marker = "sys_platform == 'linux' or sys_platform == 'win32'" },
+]