perf(ui): pin Nerd Fonts CDN to v3.4.0 for immutable caching

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: dorlugasigal

public/terminal.html

@@ -42,15 +42,15 @@
       [data-theme='night-owl'] { --key-bg: #1d3b53; --key-border: #264863; --key-shadow: rgba(0, 0, 0, 0.4); --key-special-bg: #0d2a45; }
       @font-face {
         font-family: 'NerdFont';
-        src: url('https://cdn.jsdelivr.net/gh/ryanoasis/nerd-fonts@latest/patched-fonts/JetBrainsMono/Ligatures/Regular/JetBrainsMonoNerdFont-Regular.ttf')
+        src: url('https://cdn.jsdelivr.net/gh/ryanoasis/nerd-fonts@v3.4.0/patched-fonts/JetBrainsMono/Ligatures/Regular/JetBrainsMonoNerdFont-Regular.ttf')
           format('truetype');
         font-weight: normal;
         font-style: normal;
         font-display: swap;
       }
       @font-face {
         font-family: 'NerdFont';
-        src: url('https://cdn.jsdelivr.net/gh/ryanoasis/nerd-fonts@latest/patched-fonts/JetBrainsMono/Ligatures/Bold/JetBrainsMonoNerdFont-Bold.ttf')
+        src: url('https://cdn.jsdelivr.net/gh/ryanoasis/nerd-fonts@v3.4.0/patched-fonts/JetBrainsMono/Ligatures/Bold/JetBrainsMonoNerdFont-Bold.ttf')
           format('truetype');
         font-weight: bold;
         font-style: normal;
@@ -2378,7 +2378,7 @@ <h3>
       // ===== Font Loading (non-blocking) =====
       const nerdFont = new FontFace(
         'NerdFont',
-        "url('https://cdn.jsdelivr.net/gh/ryanoasis/nerd-fonts@latest/patched-fonts/JetBrainsMono/Ligatures/Regular/JetBrainsMonoNerdFont-Regular.ttf')",
+        "url('https://cdn.jsdelivr.net/gh/ryanoasis/nerd-fonts@v3.4.0/patched-fonts/JetBrainsMono/Ligatures/Regular/JetBrainsMonoNerdFont-Regular.ttf')",
       );
       nerdFont
         .load()