feat: complete production hardening implementation, specialty canonicalization, google-genai migration, voice reliability, sqlite concurrency, and test suite consolidation

ai-patient-onboarding/app/ai/providers/openai.py

@@ -0,0 +1,19 @@
+"""
+OpenAI LLM Provider.
+"""
+
+from typing import Optional
+from app.ai.providers.base import LLMProvider
+from app.ai.openai_client import OpenAIClient
+
+
+class OpenAIProvider(LLMProvider):
+    def __init__(self, timeout_seconds: float = 4.0):
+        super().__init__(timeout_seconds=timeout_seconds)
+        self.client = OpenAIClient()
+
+    async def _generate_internal(self, system_prompt: str, user_message: str) -> Optional[str]:
+        api_key = getattr(self.client, "api_key", None)
+        if not api_key or api_key in ["your_openai_key", "your_openai_api_key", ""]:
+            return None
+        return await self.client.generate_response(system_prompt, user_message)