fix(app): place the context ring slot before the usage pill

The ring reserves its slot before it has data. With the pill first, the empty
slot sat between the pill and the mic; now it falls in the flexible space.

packages/app/src/composer/index.tsx

@@ -2095,8 +2095,8 @@ function ComposerContentImpl({
   const beforeVoiceContent = useMemo(
     () => (
       <>
-        {hasAgent ? <UsageComposerPill serverId={serverId} agentId={agentId} /> : null}
         {resolveContextWindowPlacement(contextWindowMeter, hasAgent)}
+        {hasAgent ? <UsageComposerPill serverId={serverId} agentId={agentId} /> : null}
       </>
     ),
     [agentId, contextWindowMeter, hasAgent, serverId],