style(chat): simplify greeting and highlight username

components/canvas/CanvasChatPanel.tsx

@@ -2284,9 +2284,6 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
     }
     return "";
   }, [session?.user?.email, session?.user?.name]);
-  const greetingTitle = greetingUserName
-    ? `Hi, ${greetingUserName}，我是你的AI设计师`
-    : "Hi, 我是你的AI设计师";
   const totalGeneratedImages = Number(userImageStats?.totalImages ?? NaN);
   const aiDetailGenerationEnabled = siteSettings?.aiDetailGenerationEnabled === true;
   const canvasSkillTagsEnabled = canvasSkillTagsData?.enabled !== false;
@@ -6316,9 +6313,17 @@ export function CanvasChatPanel({ chatId, initialMessages = [], onClose, onOpenF
             <div className={cn("flex flex-col h-full", isDetailGenerationMode ? "pt-0" : "pt-4")}>
               {/* Greeting */}
               <div className={cn(isDetailGenerationMode ? "mb-4" : "mb-8")}>
-                <h1 className="text-2xl font-bold mb-2">{greetingTitle}</h1>
+                <h1 className="mb-2 text-2xl font-bold">
+                  <span>Hi</span>
+                  {greetingUserName ? (
+                    <>
+                      <span>, </span>
+                      <span className="text-blue-600">{greetingUserName}</span>
+                    </>
+                  ) : null}
+                </h1>
                 <p className="text-muted-foreground">
-                  让我们开始今天的创作吧!
+                  开始创作吧!
                   {Number.isFinite(totalGeneratedImages) ? (
                     <>
                       {" "}累计为你生成了{" "}