| # Proposal | |
| ## Why | |
| The developers who run the app need their own tools: a lab for testing tools, and a view of what the AI costs (PRD 4.20). | |
| ## What Changes | |
| - An empty lab page for testing and development tools. | |
| - An AI usage page: calls and estimated cost by day, class and kind. | |
| ## Capabilities | |
| ### New Capabilities | |
| - `developer-tools`: the lab and the AI usage page (PRD DEV-3, DEV-4). The prompter (DEV-2) is its own change, `add-prompter`. | |
| ### Modified Capabilities | |
| ## Impact | |
| - Reads the cost records of `ai-help`. | |