[Feature Request] 1h prompt Caching

The the introduction of subagents, and each agent having its own system prompt it would great to be able to have the 1h prompt caching. I am not sure if this is somehow handled under the hood, but reading the docs, it only make reference to Claude, not specifically to Claude Code. Hence, it is not clear whether is enabled on Claude code or whether it is the "default" 5m caching or some other caching mechanism is in place. I might have missed it,