The manual was a long block of text that had fallen behind the window (it
still called recipes and materials "in testing") and was reachable only
from Settings. Pages explain themselves, Home lists what you can do and !
shows what changed, so Settings -> Help and feedback now offers the
interface tour, what's new, the full guide (the README on GitHub, at its
Chinese half in Chinese) and feedback. Removes ui_help.js, its strings and
styles, and the recipe "beta" notice code that no longer had an element.
The README's backup note no longer calls the features a test.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
