style(web): put the timestamp first in HistoryEntry to match NetworkEntry

Move the Client/Server direction badge to the right of the timestamp so the
monospace timestamp is leftmost, matching the NetworkEntry header layout.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

clients/web/src/components/groups/HistoryEntry/HistoryEntry.tsx

@@ -124,12 +124,12 @@ export function HistoryEntry({
       <Stack gap="sm">
         <HeaderRow>
           <Group gap="sm">
+            <TimestampText>{formatTimestamp(entry.timestamp)}</TimestampText>
             {entry.origin && (
               <MessageDirectionBadge
                 direction={entry.origin === "client" ? "outgoing" : "incoming"}
               />
             )}
-            <TimestampText>{formatTimestamp(entry.timestamp)}</TimestampText>
             <Badge color="dark">{method}</Badge>
             {target && <TargetText>{target}</TargetText>}
           </Group>