Z.ai Usage Helper

https://github.com/nniicckk6/zai-extention

A small browser extension that fills in data the z.ai GLM Coding Plan usage page fetches but doesn't render — most notably the reset time for the 5-hour quota (and a live countdown), plus a subscription summary block.

Works on Chrome, Edge, and Firefox. No background script, no telemetry, no popup. Runs entirely as a content script on the one page it's needed on.

Where	What
5 Hours Quota card	Reset Time: YYYY-MM-DD HH:MM (in Xh Ym) — was missing entirely
Below the cards	Subscription block: plan, price, next renewal (with auto-renew badge), validity range

The page already requests this data from /api/monitor/usage/quota/limit and /api/biz/subscription/list; the extension just makes the same authenticated calls (it reads the token from localStorage) and renders the parts the frontend leaves on the floor.