fix: use correct AI model configuration in brain.py instead of embedding model

GramAddict/core/navigation/brain.py

@@ -15,12 +15,8 @@ def ask_brain_for_action(
         return None
 
     cfg = Config()
-    url = (
-        getattr(cfg.args, "ai_embedding_url", "http://localhost:11434/api/chat")
-        if hasattr(cfg, "args")
-        else "http://localhost:11434/api/chat"
-    )
-    model = getattr(cfg.args, "ai_embedding_model", "llama3") if hasattr(cfg, "args") else "llama3"
+    url = getattr(cfg.args, "ai_model_url", "http://localhost:11434/api/generate") if hasattr(cfg, "args") else "http://localhost:11434/api/generate"
+    model = getattr(cfg.args, "ai_model", "llama3") if hasattr(cfg, "args") else "llama3"
 
     prompt = (
         f"You are an autonomous Instagram agent. Your ultimate goal is: '{goal}'.\n"