Every component type has its own icon, drawn from a bike built part by part
Components
Each component in a bike's list now shows an icon of its part. A chain looks like a chain, a cassette like a cassette, a rotor like a rotor. The same icon appears in the component details and on the home page when a part needs attention.
The icons are one drawing, not a clip-art set. We built a bike from real frame geometry, part by part, and each icon is that part cut from the bike. They follow the text colour, so they look right in light and dark mode.
Home page wear alerts now show the component type in plain words instead of its internal name.