feat(members,header): overhaul members page with CV dialog and english-ify navigation

- Rewrite Members page to English: LAB MEMBERS, Prof. Seok-Joo Koh, Active Researchers, and Graduates
- Add ProfessorDetailsDialog component with comprehensive CV modal
- Standardize degree course label mappings (Ph. D., M. S.)
- Translate mobile navigation panel and header aria-labels to English
- Update E2E test suite assertions for the updated members structure

refer_landing_page/components/Header.tsx

@@ -12,11 +12,11 @@ const NAV_SETTLE_MS = 300;  // ms — 라우트 전환 직후 방향 판정 유
 
 // CUSTOMIZATION HOOK: edit nav labels / routes here.
 const navItems = [
-  { href: "/", ko: "홈", en: "Home", no: "01" },
-  { href: "/members", ko: "구성원", en: "Members", no: "02" },
-  { href: "/publications", ko: "논문", en: "Publications", no: "03" },
-  { href: "/lectures", ko: "강의", en: "Lectures", no: "04" },
-  { href: "/standardization", ko: "표준화", en: "Standardization", no: "05" },
+  { href: "/", en: "Home", no: "01" },
+  { href: "/members", en: "Members", no: "02" },
+  { href: "/publications", en: "Publications", no: "03" },
+  { href: "/lectures", en: "Lectures", no: "04" },
+  { href: "/standardization", en: "Standardization", no: "05" },
 ];
 
 export default function Header() {
@@ -170,7 +170,7 @@ export default function Header() {
 
         {/* Desktop nav — small caps, wide tracking (visible at >= 1240px) */}
         <div className="hidden items-center gap-4 desktop:flex">
-          <nav className="flex items-center gap-2" aria-label="주 메뉴">
+          <nav className="flex items-center gap-2" aria-label="Main Navigation">
             {navItems.map((item) => {
               const active = isActive(item.href);
               return (
@@ -206,7 +206,7 @@ export default function Header() {
           <button
             type="button"
             className="inline-flex items-center justify-center border border-ink p-2 text-ink transition hover:bg-ink hover:text-ivory"
-            aria-label={open ? "메뉴 닫기" : "메뉴 열기"}
+            aria-label={open ? "Close menu" : "Open menu"}
             aria-expanded={open}
             aria-controls="mobile-menu"
             onClick={() => setOpen((v) => !v)}
@@ -227,7 +227,7 @@ export default function Header() {
         <nav
           id="mobile-menu"
           className="mobile-menu-panel border-t border-ink bg-ivory desktop:hidden"
-          aria-label="모바일 메뉴"
+          aria-label="Mobile Navigation"
         >
           <ul className="container-content flex flex-col py-2">
             {navItems.map((item) => {
@@ -252,14 +252,14 @@ export default function Header() {
                       >
                         {item.no}
                       </span>
-                      <span className="headline-ko text-lg">{item.ko}</span>
+                      <span className="font-sans text-base">{item.en}</span>
                     </span>
                     <span
-                      className={`text-[0.7rem] font-semibold uppercase tracking-[0.18em] ${
-                        active ? "text-white dark:text-ivory" : "text-ink-mute"
+                      className={`text-xs font-mono ${
+                        active ? "text-white/80 dark:text-ivory/80" : "text-ink-mute"
                       }`}
                     >
-                      {item.en}
+                      →
                     </span>
                   </Link>
                 </li>