Add usage safeguards to AI Client (limits, visibility, and cost awareness) #345
Description
What problem does this address?
As originally requested by @ifahimreza via https://make.wordpress.org/core/2026/03/24/introducing-the-ai-client-in-wordpress-7-0/#comment-48592:
This looks like a great step toward a unified AI layer in WordPress. One concern, though, is that since plugins can send prompts through the AI Client, it may be helpful to have safeguards for usage. For example, allowing site owners to set monthly token/request limits and a simple WP-Admin usage dashboard that shows calls by plugin, with estimated costs and alerts. That could help avoid surprise bills and build more trust in the ecosystem.