Inline local-smart-turn-v3 deps for Poetry compatibility

Replace self-referential `pipecat-ai[local-smart-turn-v3]` extra in core
dependencies with the actual packages (`transformers`, `onnxruntime`).
Self-referential extras are not supported by Poetry and cause dependency
resolution failures. Since these are required by the default turn stop
strategy (LocalSmartTurnAnalyzerV3), they belong in core dependencies.

- Remove `local-smart-turn-v3` optional extra from pyproject.toml
- Remove try/except ModuleNotFoundError guard (now always installed)
- Remove `--extra local-smart-turn-v3` from CI workflows

pyproject.toml

@@ -38,8 +38,10 @@ dependencies = [
     # Pinning numba to resolve package dependencies
     "numba==0.61.2",
     "wait_for2>=0.4.1; python_version<'3.12'",
-    # Pipecat optionals
-    "pipecat-ai[local-smart-turn-v3]",
+    # Required by LocalSmartTurnAnalyzerV3
+    # Inlined here instead of using a self-referential extra for Poetry compatibility.
+    "transformers",
+    "onnxruntime~=1.23.2",
 ]
 
 [project.urls]
@@ -84,7 +86,6 @@ livekit = [ "livekit~=1.0.13", "livekit-api~=1.0.5", "tenacity>=8.2.3,<10.0.0",
 lmnt = [ "pipecat-ai[websockets-base]" ]
 local = [ "pyaudio~=0.2.14" ]
 local-smart-turn = [ "coremltools>=8.0", "transformers", "torch>=2.5.0,<3", "torchaudio>=2.5.0,<3" ]
-local-smart-turn-v3 = [ "transformers", "onnxruntime~=1.23.2" ]
 mcp = [ "mcp[cli]>=1.11.0,<2" ]
 mem0 = [ "mem0ai~=0.1.94" ]
 mistral = []