feat(tui): anchor todo panel above streaming output

ui-tui/src/__tests__/createGatewayEventHandler.test.ts

@@ -81,6 +81,9 @@ describe('createGatewayEventHandler', () => {
 
     expect(finalText).toBeDefined()
     expect(trail).toMatchObject({ kind: 'trail', role: 'system', todos, todoIncomplete: true })
+    // Todo archive must sit ABOVE the final assistant text so the panel
+    // doesn't visibly jump across the final answer at end-of-turn.
+    expect(appended.indexOf(trail!)).toBeLessThan(appended.indexOf(finalText!))
     expect(getTurnState().todos).toEqual([])
   })
 

ui-tui/src/app/createGatewayEventHandler.ts

@@ -537,9 +537,14 @@ export function createGatewayEventHandler(ctx: GatewayEventHandlerContext): (ev:
         const { finalMessages, finalText, wasInterrupted } = turnController.recordMessageComplete(ev.payload ?? {})
 
         if (!wasInterrupted) {
+          // Archive the todo list FIRST so it sits above the final assistant
+          // text in the transcript — same position it held during streaming.
+          // Otherwise the panel would visibly jump from "above live answer" to
+          // "below final answer" at message.complete.
+          archiveTodosAtTurnEnd().forEach(appendMessage)
+
           const msgs: Msg[] = finalMessages.length ? finalMessages : [{ role: 'assistant', text: finalText }]
           msgs.forEach(appendMessage)
-          archiveTodosAtTurnEnd().forEach(appendMessage)
 
           if (bellOnComplete && stdout?.isTTY) {
             stdout.write('\x07')

ui-tui/src/components/appLayout.tsx

@@ -59,6 +59,8 @@ const TranscriptPane = memo(function TranscriptPane({
 
           {transcript.virtualHistory.bottomSpacer > 0 ? <Box height={transcript.virtualHistory.bottomSpacer} /> : null}
 
+          <LiveTodoPanel />
+
           <StreamingAssistant
             cols={composer.cols}
             compact={ui.compact}
@@ -67,8 +69,6 @@ const TranscriptPane = memo(function TranscriptPane({
             progress={progress}
             sections={ui.sections}
           />
-
-          <LiveTodoPanel />
         </Box>
       </ScrollBox>