The winning registrations on one entity's form, resolved once for the whole form.
Every host that draws contributions filters these winners by its own slot or section, so a row
that takes a key from a compiled panel draws where the row says, and the compiled panel draws
nowhere. Memoized per input list, which the collector returns as a stable reference until
something changes, so a caller must not change a list after passing it. The result is shared:
callers must not mutate it.
The winning registrations on one entity's form, resolved once for the whole form.
Every host that draws contributions filters these winners by its own slot or section, so a row that takes a key from a compiled panel draws where the row says, and the compiled panel draws nowhere. Memoized per input list, which the collector returns as a stable reference until something changes, so a caller must not change a list after passing it. The result is shared: callers must not mutate it.