Explicit memory disabling

When building LLM agents for AgentCore/runtime environments, don’t rely on framework defaults for memory. If your agent does not use conversational/session memory, explicitly disable it (e.g., set memory_mode='NO_MEMORY') to prevent the runtime/framework from automatically creating/using STM.

Example (pattern):

# Only enable memory if you actually need it.
agent = Agent(
    model=bedrock_model,
    system_prompt=system_prompt,
    tools=[web_search],
    memory_mode='NO_MEMORY',
)

If you later add memory, make that change intentional (and document why), rather than leaving defaults enabled inadvertently.