Merge remote-tracking branch 'origin/master' into ji

# Conflicts:
#	frontend-web/src/components/workspace/messages/message-list-item.tsx
#	offline-backend-20260512/backend/app/gateway/app.py
#	offline-backend-20260512/backend/packages/harness/deerflow/runtime/scheduler/html_page.py
#	offline-backend-20260512/backend/packages/harness/deerflow/runtime/scheduler/service.py

frontend-web/src/core/threads/hooks.ts

@@ -350,9 +350,12 @@ export function useThreadStream({
         // agent thread URL — otherwise fall back to the global new chat.
         const hash = typeof window !== "undefined" ? window.location.hash : "";
         const agentMatch = hash.match(/#\/page\/workspace\/agents\/([^/]+)\//);
-        const target = agentMatch
-          ? `/page/workspace/agents/${agentMatch[1]}/chats/new`
-          : "/page/workspace/chats/new";
+        const iframeMatch = hash.match(/#\/page\/workspace\/chats_iframe\//);
+        const target = agentMatch
+          ? `/page/workspace/agents/${agentMatch[1]}/chats/new`
+          : iframeMatch
+            ? "/page/workspace/chats_iframe/new"
+            : "/page/workspace/chats/new";
         // First navigate to a safe URL so the post-reload page lands on a
         // valid route. Then full-reload so TanStack Query cache, context
         // providers and any other state captured under the previous user's

frontend-web/src/core/threads/utils.ts

@@ -80,3 +80,15 @@ export function titleOfThread(thread: AgentThread, fallback = "Untitled") {
 
   return fallback;
 }
+
+export function sanitizeThreadTitleForDisplay(title: string | null | undefined) {
+  if (!title) return "Untitled";
+
+  const cleaned = title
+    .replace(/<\/?[^>\n]+>/g, " ")
+    .replace(/<[^>\n]*$/g, " ")
+    .replace(/\s+/g, " ")
+    .trim();
+
+  return cleaned || "Untitled";
+}