refactor(pages,a11y,seo): enhance subpage metadata, semantic HTML, accessibility, and E2E regression tests

- Standardize Next.js Metadata and dynamic generateMetadata across all subpages
- Fix duplicate main landmark in publications page by replacing nested main with div
- Unify Members page spacing (space-y-10 sm:space-y-14, pt-6 md:pt-8) and responsive H2s
- Add aria-label and focus ring to CategoryNav View All links for a11y
- Derive dynamic course history semester ranges in Lectures page
- Add 3 comprehensive E2E test cases (test_08, test_09, test_10) for highlights, active border, CITE brand links, and English H1 headers

refer_landing_page/app/publications/_components/CategoryNav.tsx

@@ -89,7 +89,8 @@ export function CategoryNav({ currentCategory }: CategoryNavProps) {
                 ) : (
                   <Link
                     href={`/publications/${cat.slug}`}
-                    className="inline-flex items-center text-xs font-bold text-vermillion-dark hover:underline"
+                    aria-label={`View all ${cat.label} records`}
+                    className="inline-flex items-center text-xs font-bold text-vermillion-dark hover:underline focus:outline-none focus:ring-1 focus:ring-vermillion-dark rounded"
                   >
                     View All &rarr;
                   </Link>