# Plan-and-Execute caching
def plan(user_query):
    return client.messages.create(
        system=[{"text": PLANNING_PROMPT, "cache_control": {"ttl": "1h"}}],
        messages=[{"role": "user", "content": user_query}],
    )
 
def execute(plan_steps, step_idx):
    # Her execution call için system + plan + tools cache'le
    return client.messages.create(
        system=[
            {"text": EXECUTOR_PROMPT, "cache_control": {"ttl": "1h"}},
            {"text": f"Plan:\n{plan_steps}", "cache_control": {"ttl": "5m"}},  # plan stabil olduğu sürece
        ],
        tools=tools,
        messages=[{"role": "user", "content": f"Şu adımı yap: {step_idx}"}],
    )