[RAPID-micro] 메일 관리 타이틀에서 (IMAP) 제거

frontend/app/(main)/mail/imap/page.tsx

@@ -504,7 +504,7 @@ export default function ImapMailPage() {
       <div className="flex items-center justify-between px-4 py-3 border-b">
         <div className="flex items-center gap-2">
           <Mail className="h-5 w-5 text-muted-foreground" />
-          <h1 className="text-lg font-semibold">메일 관리 (IMAP)</h1>
+          <h1 className="text-lg font-semibold">메일 관리</h1>
         </div>
         <div className="flex items-center gap-2">
           <Button size="sm" onClick={() => { setComposeMode("new"); setComposeInitialHtml(""); setComposeTo(""); setComposeCc(""); setComposeSubject(""); setComposeOpen(true); }}>