* fix(chat): make search bar clickable by giving ChatMessageList a vertical layout
The search bar (AnimatedVisibility) and the message LazyColumn were
emitted as siblings with no container. The call site is a Box, which
overlays children — so the LazyColumn rendered on top of the search bar,
intercepting every pointer event. The bar stayed visible but was dead
(nothing inside clickable: input, nav arrows, close).
Wrap ChatMessageList's children in a Column so the bar occupies real
layout space above the list; the LazyColumn now takes weight(1f) and
scrolls independently. Fixes#490.
* refactor(chat): simplify search-list LazyColumn modifier
Use fillMaxWidth().weight(1f) instead of fillMaxSize().weight(1f) inside
the new Column — weight already claims the remaining vertical space, so
fillMaxSize was redundant/contradictory (Sourcery review nit).
Note: the Sourcery 'use LocalHermesStatusColors' suggestion on the search
bar Surface is a false positive — that rule covers SEMANTIC status colors
(success/warning/error/info) only. surfaceContainerLow/outline are neutral
Material surface chrome, not status colors; LocalHermesStatusColors does
not even expose them. The corresponding status dot correctly uses StatusRed.
M57
089eaf06e5