FilterSelect renders value rows with +/- (include/exclude) buttons, check/cross
pills for the included/excluded sets, and an optional set of pinned modifier
pseudo-options (e.g. (Any)/(None)) that stay visible above the value rows. A
selected modifier is mutually exclusive with value pills. It delegates assembly
to _combobox_shell and supports both pre-rendered options (complete set) and
search_url + prefetch (windowed); included/excluded are passed as resolved
value+label so pills show labels even outside the fetched window. Styling is
inline (ported from the old SelectableFilter CSS) so nothing lives in input.css.
https://claude.ai/code/session_01XzhXvMvw42CQGc9kmin3GS
Claude
lukas