fix(13-08): confirm-response listener TTL follows the 300s gate timeout

130s TTL predated the UAT timeout bump — it disarmed the approve/deny
listener while the dialog was still legitimately open (self-healing via
the next poll's re-announce, but a click in the gap dropped silently).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

neode-ui/src/services/contextBroker.ts

@@ -105,8 +105,12 @@ export class ContextBroker {
 
   /** How long the one-shot aiui:tool-confirm-response listener stays armed
    * before being cleaned up — slightly beyond the node's own CONFIRM_TIMEOUT
-   * (120s), after which the node has already declined the action itself. */
-  private static readonly CONFIRM_LISTENER_TTL_MS = 130_000
+   * (300s since 13-08's UAT bump; was 120s), after which the node has
+   * already declined the action itself. Must stay ABOVE the node timeout:
+   * a TTL below it disarms the listener while the dialog is still
+   * legitimately open, and an approve clicked in that window goes nowhere
+   * until the next poll re-announces. */
+  private static readonly CONFIRM_LISTENER_TTL_MS = 310_000
 
   private confirmPollTimer: ReturnType<typeof setInterval> | null = null
   /** Chat turns currently in flight — polling runs while > 0. */