add rag test

.env

@@ -0,0 +1,14 @@
+# LLM API Configuration
+# Get your API key from:
+# - OpenAI: https://platform.openai.com/api-keys
+# - Together.ai: https://api.together.xyz/settings/api-keys
+# - Groq: https://console.groq.com/keys
+# - Or any OpenAI-compatible API
+
+OPENAI_API_KEY=your_api_key_here
+
+# Optional: Custom base URL for OpenAI-compatible APIs
+# LLM_BASE_URL=https://api.openai.com/v1
+
+# Optional: Model name (default: gpt-4o-mini)
+# LLM_MODEL=gpt-4o-mini