fix: clear logging handlers for LiteLLM to prevent duplicate logs

- Adds a function to clear existing logging handlers for LiteLLM components to ensure logs are not duplicated.
- Updates the logging configuration to force basic logging handlers, preventing interference with Loguru.

Author: liblaf

src/llm_cli/logging/__init__.pyi

@@ -1,4 +1,5 @@
+from ._fix_litellm import fix_litellm
 from ._init import init
 from ._loguru import init_loguru
 
-__all__ = ["init", "init_loguru"]
+__all__ = ["fix_litellm", "init", "init_loguru"]

src/llm_cli/logging/_fix_litellm.py

@@ -0,0 +1,8 @@
+import logging
+
+import litellm  # noqa: F401
+
+
+def fix_litellm() -> None:
+    for name in ["LiteLLM Proxy", "LiteLLM Router", "LiteLLM"]:
+        logging.getLogger(name).handlers.clear()

src/llm_cli/logging/_loguru.py

@@ -29,4 +29,5 @@ def emit(self, record: logging.LogRecord) -> None:
 
 
 def init_loguru() -> None:
+    logging.basicConfig(handlers=[InterceptHandler()], level=0, force=True)
     logger.configure(handlers=[{"sink": sys.stderr, "level": "INFO"}])