Refactor code structure for improved readability and maintainability

Author: yanivvak

backend/pyproject.toml

@@ -6,7 +6,7 @@ readme = "README.md"
 requires-python = ">=3.10, <3.13"
 dependencies = [
     "azure-identity==1.19.0",
-    "python-dotenv==1.0.1",
+    "python-dotenv>=1.1.0",
     "autogen-agentchat==0.5.7",
     "autogen-ext[azure,docker,mcp]==0.5.7",
     "autogen-core==0.5.7",