The Assistant/Workspace switch and the menu toggle rendered as unstyled native
buttons in the app sidebar. Their CSS was in assistant.css, which is pulled in by
the assistant COMPONENT — so it is simply absent on "/", where those controls now
also render.
Both moved to styles.css, which every page loads. A stale duplicate of the switch
rules was also still sitting in assistant.css; that is exactly how two copies
drift and one silently wins, so it is gone.
Adds a test that walks the classes rendered in index.html and asserts each is
defined in styles.css and NOT duplicated in assistant.css, which would have
caught this before it shipped.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01WjVc5oaAaYFNbZGLeJp6TX
6c2bafbe02