refactor: enhance site navigation and styling

- Add view transitions for site title
- Update Navbar with hover effects and improved typography
- Modify index page layout with decorative lines and date formatting
- Adjust post publication dates
- Update VSCode dictionary with new terms

.vscode/settings.json

@@ -63,6 +63,7 @@
     "astrojs",
     "attributify",
     "bmoji",
+    "Frontmatter",
     "gtag",
     "katex",
     "Lightbox",
@@ -76,6 +77,9 @@
     "radishzz",
     "rehype",
     "Retypeset",
+    "Roundhand",
+    "STIX",
+    "titlebar",
     "Umami",
     "unocss",
     "vite",