feat: add llm embedding model config

tradingagents/agents/utils/memory.py

@@ -9,6 +9,7 @@ class FinancialSituationMemory:
             self.embedding = "nomic-embed-text"
         else:
             self.embedding = "text-embedding-3-small"
+        self.embedding = config.get("embedding") or self.embedding
         self.client = OpenAI(base_url=config["backend_url"])
         self.chroma_client = chromadb.Client(Settings(allow_reset=True))
         self.situation_collection = self.chroma_client.create_collection(name=name)

tradingagents/default_config.py

@@ -13,6 +13,7 @@ DEFAULT_CONFIG = {
     "deep_think_llm": "o4-mini",
     "quick_think_llm": "gpt-4o-mini",
     "backend_url": "https://api.openai.com/v1",
+    "embedding": "",
     # Debate and discussion settings
     "max_debate_rounds": 1,
     "max_risk_discuss_rounds": 1,