OpenAI Integration
OpenAI text-embedding-3-small for all RAG vector embeddings (unified_rag_content), plus gpt-4o-mini as the chatbot LLM fallback when Claude is unavailable
OpenAI text-embedding-3-small for all RAG vector embeddings (unified_rag_content), plus gpt-4o-mini as the chatbot LLM fallback when Claude is unavailable