Replace old evaluation/ with evaluation_long_short/ and add evaluation_buy_sell/

tradingagents/default_config.py

@@ -42,7 +42,8 @@ DEFAULT_CONFIG = {
     },
     # Tool-level configuration (takes precedence over category-level)
     "tool_vendors": {
-        # Example: "get_stock_data": "alpha_vantage",  # Override category default
-        # Example: "get_news": "openai",               # Override category default
+        # "get_stock_data": "alpha_vantage",  # Override category default
+        "get_news": "alpha_vantage",   
+        "get_global_news" :"openai"           # Override category default
     },
 }