feat: XAVIS 브랜드 이미지를 NCue 로고·favicon으로 교체

로그인·네비·F-Scan 로고, favicon, 페이지 타이틀, 인증 메일 브랜딩을 NCue로 통일.

Co-authored-by: Cursor <cursoragent@cursor.com>

views/login.ejs

@@ -4,7 +4,7 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <%- include('partials/favicon') %>
-    <title>서비스 접속 - XAVIS</title>
+    <title>서비스 접속 - NCue</title>
     <link rel="stylesheet" href="/public/styles.css" />
     <style>
       .login-page {
@@ -123,13 +123,13 @@
       <div class="login-card">
         <div class="login-logo-stack" style="display: flex; flex-direction: column; align-items: center; gap: 8px; margin-bottom: 12px">
           <a
-            href="https://xavis.co.kr"
+            href="https://ncue.net"
             class="logo-link"
             target="_blank"
             rel="noopener noreferrer"
-            aria-label="XAVIS 회사 사이트(새 탭)"
+            aria-label="NCue 회사 사이트(새 탭)"
             style="margin-bottom: 0"
-            ><img src="/public/images/xavis-logo.png" alt="XAVIS" class="logo-img logo-img-xavis"
+            ><img src="/public/images/ncue-logo.png" alt="NCue" class="logo-img logo-img-ncue"
           /></a>
           <img
             src="/public/images/aiplatform-logo.png"