fix(web): match subagent timestamp fonts to chat (#16151)

Author: StiensWout

apps/web/src/components/chat/MessagesTimeline.tsx

@@ -3075,7 +3075,7 @@ const V2SubagentGroup = memo(function V2SubagentGroup({
               {statusSummary}
             </span>
           </span>
-          <span className="shrink-0 font-mono text-3xs text-muted-foreground">
+          <span className="shrink-0 text-xs text-muted-foreground tabular-nums">
             <SubagentElapsed agent={subagentGroupTiming(agents)} />
           </span>
           <ChevronDownIcon

apps/web/src/components/chat/V2LifecycleRow.tsx

@@ -471,7 +471,7 @@ function SubagentTimelineLink(props: {
           )}
         </span>
       </span>
-      <span className="shrink-0 font-mono text-3xs text-muted-foreground/80">
+      <span className="shrink-0 text-xs text-muted-foreground tabular-nums">
         {props.event ? props.event.timestamp : <SubagentElapsed agent={timing} />}
       </span>
       {threadId !== null ? (