The old README was the whole manual in one file. Someone who opened the
repo saw a wall of config paths before seeing the app. The new one leads
with the app: a hero screenshot, six highlights, then a section for each
part (picking models, providers, routing groups and intent routing,
subscriptions and plugins, usage, sharing, the library), with the site's
light and dark screenshots in <picture> tags. A supported-agents list, a
three-step quick start and a CLI sample follow. README.zh-CN.md is the
same page in Chinese, with the Chinese screenshots where the site has
them.
The full manual moves, word for word, to docs/reference.md, with its two
relative links fixed. Both READMEs link to it, so no detail is lost.