diff --git a/src/components/chat/GlobalChatbox.utils.ts b/src/components/chat/GlobalChatbox.utils.ts
index 0bab75b..ff0b069 100644
--- a/src/components/chat/GlobalChatbox.utils.ts
+++ b/src/components/chat/GlobalChatbox.utils.ts
@@ -1,11 +1,13 @@
 import type { PersistedChatState } from "./GlobalChatbox.types";
 
-export const createId = () => `${Date.now()}-${Math.random().toString(36).slice(2, 8)}`;
+export const createId = () =>
+  `${Date.now()}-${Math.random().toString(36).slice(2, 8)}`;
 export const CHAT_STORAGE_KEY = "tjwater_copilot_chat_state_v1";
-const THINK_TAG_ALIAS_PATTERN = /<\s*(\/?)\s*(thinking|reasoning|thought)\b[^>]*>/gi;
+const THINK_TAG_ALIAS_PATTERN =
+  /<\s*(\/?)\s*(thinking|reasoning|thought)\b[^>]*>/gi;
 export const PRESET_PROMPTS = [
+  "分析当前管网中的水力瓶颈管道，并给出改造建议。",
   "帮我分析当前管网压力异常点，并按风险等级排序。",
-  "基于当前状态，给出今天的巡检优先级和建议路线。",
   "帮我生成一份今日运行简报，包含问题、原因和建议。",
 ];
 
@@ -47,7 +49,10 @@ export const getInitialChatState = (): PersistedChatState => {
     }
     return { messages: parsed.messages, conversationId: parsed.conversationId };
   } catch (error) {
-    console.error("[GlobalChatbox] Failed to read persisted chat state:", error);
+    console.error(
+      "[GlobalChatbox] Failed to read persisted chat state:",
+      error,
+    );
     window.localStorage.removeItem(CHAT_STORAGE_KEY);
     return { messages: [], conversationId: undefined };
   }