FIX: PAAL 206 supress excessive logging

Author: qa-jil-kamerling

adk/agenticlayer/agent_to_a2a.py

@@ -43,6 +43,9 @@ def to_a2a(agent: BaseAgent) -> Starlette:
         app = to_a2a(agent)
         # Then run with: uvicorn module:app
     """
+    # Suppress Gemini/LiteLLM warnings
+    os.environ.setdefault("ADK_SUPPRESS_GEMINI_LITELLM_WARNINGS", "true")
+
     # Set up ADK logging to ensure logs are visible when using uvicorn directly
     log_level = os.environ.get("LOGLEVEL", "INFO")
     setup_adk_logger(log_level)  # type: ignore