chore: regenerate openapi.json and schema.d.ts from live server

Updated types now include attributes on ExecutionDetail, ProcessorNode,
and ExecutionSummary from the actual API. Removed stale detail.children
fallback that no longer exists in the schema.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

ui/src/pages/Dashboard/Dashboard.tsx

@@ -371,9 +371,7 @@ export default function Dashboard() {
 
   // ─── Detail panel data ───────────────────────────────────────────────────
   const procList = detail
-    ? detail.processors?.length
-      ? detail.processors
-      : (detail.children ?? [])
+    ? (detail.processors ?? [])
     : []
 
   const routeFlows = useMemo(() => {

ui/src/pages/ExchangeDetail/ExchangeDetail.tsx

@@ -100,7 +100,7 @@ export default function ExchangeDetail() {
   const [replayTab, setReplayTab] = useState('headers')
 
   const procList = detail
-    ? (detail.processors?.length ? detail.processors : (detail.children ?? []))
+    ? (detail.processors ?? [])
     : []
 
   // Subscribe to tracing state for badge rendering