codexart-lab/CF-Workers-UsagePanel ? reverse-engineered prompt

Build me a Cloudflare Workers based dashboard that lets me track the free quota usage for multiple Cloudflare accounts in one place.

I want a clean, modern page that shows Workers and Pages requests, plus D1, KV, and R2 usage, with progress bars and clear percentages so I can quickly see how close each account is to its limits. It should support logging in with a username and password, let me add and remove accounts from an admin area, and save everything so it keeps working after refreshes. The main page should show a combined overview, and the admin area should show each account separately with its latest usage data.

Please make it responsive for mobile, support light and dark mode, and keep the interface polished and easy to read. If you need current Cloudflare docs or limits, look them up online first.