diff --git a/frontend/src/app/workspace/chats/[thread_id]/page.tsx b/frontend/src/app/workspace/chats/[thread_id]/page.tsx
index 8d40ad62..1fc94353 100644
--- a/frontend/src/app/workspace/chats/[thread_id]/page.tsx
+++ b/frontend/src/app/workspace/chats/[thread_id]/page.tsx
@@ -67,10 +67,19 @@ export default function ChatPage() {
   // 新逻辑：历史渲染和新会话仅由路由 /chats/new 控制，不再读取 isnew/is_chatting 参数。
   const shouldRenderHistory = !showWelcomeStyle;
   const createNewSession = useMemo(() => isNewThread, [isNewThread]);
+  const safeThreadId = useMemo(() => {
+    if (!threadId || threadId === "new") {
+      return undefined;
+    }
+    return threadId;
+  }, [threadId]);
 
   const streamThreadId = useMemo(() => {
-    return isNewThread && createNewSession ? undefined : threadId;
-  }, [createNewSession, isNewThread, threadId]);
+    if (isNewThread && createNewSession) {
+      return undefined;
+    }
+    return safeThreadId;
+  }, [createNewSession, isNewThread, safeThreadId]);
 
   const { showNotification } = useNotification();
 
@@ -79,7 +88,7 @@ export default function ChatPage() {
     skillError: selectedSkillError,
     clearSkillError: clearSelectedSkillError,
     isBootstrapping: isSelectedSkillBootstrapping,
-  } = useSelectedSkillListener({ threadId });
+  } = useSelectedSkillListener({ threadId: safeThreadId ?? null });
   // 对话行为控制器
   const [thread, sendMessage, isUploading] = useThreadStream({
     threadId: streamThreadId,
@@ -495,7 +504,7 @@ export default function ChatPage() {
                   if (threadId && threadId !== "new") {
                     nextQuery.set("thread_id", threadId);
                   }
-                  router.replace(`/workspace/chats/new?${nextQuery.toString()}`);
+                  router.replace(`/workspace/chats/${threadId}?is_chatting=false`);
                 }}
               >
                 确定
diff --git a/frontend/src/components/workspace/chats/use-thread-chat.ts b/frontend/src/components/workspace/chats/use-thread-chat.ts
index b056898f..209f7113 100644
--- a/frontend/src/components/workspace/chats/use-thread-chat.ts
+++ b/frontend/src/components/workspace/chats/use-thread-chat.ts
@@ -1,7 +1,7 @@
 "use client";
 
 import { useParams, usePathname, useSearchParams } from "next/navigation";
-import { useCallback, useEffect, useState } from "react";
+import { useEffect, useState } from "react";
 
 
 export function useThreadChat() {
@@ -26,53 +26,13 @@ export function useThreadChat() {
   const rawPathThreadId = params?.thread_id ?? threadIdFromPathname;
 
   const isNewRoute = rawPathThreadId === "new";
-  const threadIdFromPathOrParams:string = isNewRoute
-    ? threadIdFromSearchParams?? params.thread_id
-    : params.thread_id;
+  const threadIdFromPathOrParams = isNewRoute
+    ? normalizeThreadId(threadIdFromSearchParams)
+    : normalizeThreadId(rawPathThreadId);
   // console.log("[useThreadChat] pathname", pathname);
   // console.log("[useThreadChat] params.thread_id", params?.thread_id);
   // console.log("[useThreadChat] threadIdFromPathname", threadIdFromPathname);
   // console.log("[useThreadChat] threadIdFromPath", threadIdFromPath);
-  // 持久化兜底：用于处理首屏水合或 params 时序问题。
-  const readStoredThreadId = () => {
-    if (typeof window === "undefined") {
-      return undefined;
-    }
-    const stored = window.sessionStorage.getItem("workspace.thread_id");
-    return isValidThreadId(stored) ? stored : undefined;
-  };
-
-  // 读取 query 的 thread_id（先用 hook，必要时用 window 兜底）。
-  const readQueryThreadId = () => {
-    const fromHook = threadIdFromSearchParams;
-    if (isValidThreadId(fromHook)) {
-      return fromHook;
-    }
-    if (typeof window === "undefined") {
-      return undefined;
-    }
-    const fromLocation = new URLSearchParams(window.location.search).get(
-      "thread_id",
-    );
-    if (isValidThreadId(fromLocation)) {
-      return fromLocation.trim();
-    }
-    return undefined;
-  };
-
-  const queryThreadIdFromParams = readQueryThreadId();
-  // console.log("[useThreadChat] query.thread_id", queryThreadIdFromParams);
-  // 归一化：当值为 "new" 时，替换为 query 中的 thread_id（如果存在）。
-  const normalizeThreadId = useCallback(
-    (value?: string | null) => {
-      if (!value) {
-        return undefined;
-      }
-      return value === "new" ? queryThreadIdFromParams : value;
-    },
-    [queryThreadIdFromParams],
-  );
-
   // New session is only controlled by `/workspace/chats/new`.
   const [isNewThread, setIsNewThread] = useState(() => isNewRoute);
 
@@ -82,7 +42,7 @@ export function useThreadChat() {
   // console.log("[useThreadChat] effectiveThreadIdFromPath", effectiveThreadIdFromPath);
 
   const [threadId, setThreadId] = useState<string>(() => {
-    return threadIdFromPathOrParams;
+    return threadIdFromPathOrParams ?? "";
   });
 
 
@@ -93,11 +53,10 @@ export function useThreadChat() {
     }
     setIsNewThread(isNewRoute);
     // Prefer path thread id, fall back to query thread_id when path is /new.
-    setThreadId(threadIdFromPathOrParams);
+    setThreadId(threadIdFromPathOrParams ?? "");
     setShowWelcomeStyle(isNewRoute || !isChattingFromQuery);
   }, [
     isNewRoute,
-    normalizeThreadId,
     pathname,
     searchParams,
     isChattingFromQuery,
@@ -114,6 +73,11 @@ export function useThreadChat() {
   };
 }
 
+function normalizeThreadId(value?: string | null): string | undefined {
+  if (!value) return undefined;
+  return isValidThreadId(value) ? value.trim() : undefined;
+}
+
 function isValidThreadId(value?: string | null): value is string {
   if (!value) return false;
   const normalized = value.trim().toLowerCase();
diff --git a/frontend/src/core/i18n/locales/zh-CN.ts b/frontend/src/core/i18n/locales/zh-CN.ts
index 3f4de941..734060ce 100644
--- a/frontend/src/core/i18n/locales/zh-CN.ts
+++ b/frontend/src/core/i18n/locales/zh-CN.ts
@@ -117,31 +117,31 @@ export const zhCN: Translations = {
         prompt:
           "为[主题/产品]撰写吸引人的自媒体文案，包括标题、正文和话题标签。",
         icon: PenLineIcon,
-        children: [{ id: "1245", name: "自媒体文案" }],
+        children: [{ id: "1245", name: "微信文章撰写" }],
       },
       {
         suggestion: "需求文档",
         prompt: "编写[项目/功能]的需求文档，包含功能描述、用户故事和验收标准。",
         icon: CompassIcon,
-        children: [{ id: "520", name: "需求文档" }],
+        children: [{ id: "520", name: "分解功能产品需求文档" }],
       },
       {
         suggestion: "使用指南",
         prompt: "编写[产品/功能]的使用指南，包含操作步骤、注意事项和常见问题。",
         icon: GraduationCapIcon,
-        children: [{ id: "409", name: "使用指南" }],
+        children: [{ id: "409", name: "用户指南编写" }],
       },
       {
         suggestion: "Excel数据分析",
         prompt: "对[Excel文件/数据]进行分析，生成数据洞察和可视化建议。",
         icon: MicroscopeIcon,
-        children: [{ id: "5", name: "Excel数据分析" }],
+        children: [{ id: "5", name: "数据分析" }],
       },
       {
         suggestion: "市场调研",
         prompt: "针对[行业/产品]进行市场调研，分析市场规模、竞品和趋势。",
         icon: ShapesIcon,
-        children: [{ id: "1216", name: "市场调研" }],
+        children: [{ id: "1216", name: "市场研究报告" }],
       },
     ],
     suggestionsCreate: [
diff --git a/frontend/src/core/threads/hooks.ts b/frontend/src/core/threads/hooks.ts
index 522f8123..bfc8dfec 100644
--- a/frontend/src/core/threads/hooks.ts
+++ b/frontend/src/core/threads/hooks.ts
@@ -328,15 +328,20 @@ export function useThreadStream({
       }
       setOptimisticMessages(newOptimistic);
 
-      if (resolvedThreadId) {
+      // For "new chat with prefilled thread_id" flows, calling onStart before
+      // submit can trigger route switch too early, which causes the new page to
+      // fetch history before the thread/run is actually created.
+      // Let useStream.onCreated -> handleStreamStart drive onStart instead.
+      if (resolvedThreadId && !createNewSession) {
         _handleOnStart(resolvedThreadId);
       }
 
       let uploadedFileInfo: UploadedFileInfo[] = [];
 
       try {
-        // 新会话模式下，删除旧线程并创建同名新线程
-        if (createNewSession && resolvedThreadId) {
+        // 新会话模式下，仅在本地已有历史消息时才重置旧线程。
+        // 对于全新 thread_id，避免多发一次 DELETE /threads/{id}（通常会 404）。
+        if (createNewSession && resolvedThreadId && thread.messages.length > 0) {
           await apiClient.threads.delete(resolvedThreadId).catch(() => undefined);
         }
 
diff --git a/scripts/deploy-frontend-standalone.sh b/scripts/deploy-frontend-standalone.sh
index 4fd80e7b..d7c2e238 100644
--- a/scripts/deploy-frontend-standalone.sh
+++ b/scripts/deploy-frontend-standalone.sh
@@ -5,16 +5,21 @@ set -euo pipefail
 REPO_ROOT="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
 cd "$REPO_ROOT"
 
+# Default deploy target (can be overridden by positional args)
+DEFAULT_REMOTE="root@111.228.39.147"
+DEFAULT_REMOTE_APP_DIR="/root/deerflow2"
+
 usage() {
   cat <<'EOF'
 Usage:
-  ./scripts/deploy-frontend-standalone.sh <remote> <remote_app_dir>
+  ./scripts/deploy-frontend-standalone.sh [remote] [remote_app_dir]
 
 Arguments:
-  remote          SSH target, e.g. user@example.com
-  remote_app_dir  Remote deerflow2 root dir, e.g. /home/user/deerflow2
+  remote          SSH target, optional. Default: root@111.228.39.147
+  remote_app_dir  Remote deerflow2 root dir, optional. Default: /root/deerflow2
 
 Example:
+  ./scripts/deploy-frontend-standalone.sh
   ./scripts/deploy-frontend-standalone.sh ubuntu@1.2.3.4 /opt/deerflow2
 
 Notes:
@@ -31,13 +36,17 @@ if [ "${1:-}" = "-h" ] || [ "${1:-}" = "--help" ]; then
   exit 0
 fi
 
-if [ "$#" -ne 2 ]; then
+if [ "$#" -gt 2 ]; then
   usage
   exit 1
 fi
 
-REMOTE="$1"
-REMOTE_APP_DIR="$2"
+REMOTE="${1:-$DEFAULT_REMOTE}"
+REMOTE_APP_DIR="${2:-$DEFAULT_REMOTE_APP_DIR}"
+
+echo "==> Deploy target:"
+echo "    remote: $REMOTE"
+echo "    app dir: $REMOTE_APP_DIR"
 
 echo "==> Building frontend (standalone)..."
 pnpm -C frontend build