refactor: Keep logging setup in same place

Move basic console logger setup into module init the same as the
structlog is - since we need logging to be configured *before*
modules start creating their `logger`s.

Author: athewsey

cx-agent-backend/cx_agent_backend/__init__.py

@@ -1,9 +1,20 @@
 """CX demo agent package including agent definition and AgentCore-compatible REST server"""
 
-# Configure structured logging here during module initialization, before other local and external
-# imports start creating loggers:
+# TODO: Review how log level configuration can fit together with other settings
+# We need to configure logging here during module initialization, **before** other local and
+# external imports start creating loggers with their own default levels, formats, etc.
+import logging
+from os import environ
 import structlog
 
+# Basic terminal logging:
+logging.basicConfig(
+    level=environ.get("LOG_LEVEL", "INFO").upper(),
+    format='%(asctime)s %(name)s [%(levelname)s] %(message)s',
+    datefmt='%Y-%m-%dT%H:%M:%S'
+)
+
+# Structured logging:
 structlog.configure(
     processors=[
         structlog.stdlib.filter_by_level,

cx-agent-backend/cx_agent_backend/server.py

@@ -8,15 +8,6 @@
 from fastapi import FastAPI, HTTPException, Request
 import structlog
 
-# Configure basic logging to terminal
-logging.basicConfig(
-    level=logging.INFO,
-    format='%(asctime)s - %(name)s - %(levelname)s - %(message)s',
-    handlers=[
-        logging.StreamHandler(sys.stdout)
-    ]
-)
-
 from cx_agent_backend.infrastructure.config.container import Container
 from cx_agent_backend.infrastructure.config.settings import settings
 from cx_agent_backend.presentation.api.conversation_router import (