Fix import issue in ai_providers.py

ai_providers.py

@@ -4,7 +4,11 @@ import logging
 import anthropic
 from openai import OpenAI
 from abc import ABC, abstractmethod
-from functions import functions
+from tools.github_tool import GitHubTool
+
+# Initialize GitHubTool and get functions
+github_tool = GitHubTool()
+functions = github_tool.get_functions()
 
 class AIProvider(ABC):
     @abstractmethod