Self-host VictorMono Nerd Font icons for the terminal + editor

- Add Symbols-Only Nerd Font Mono (woff2) under public/fonts; @font-face scoped
  by unicode-range to the Nerd Font glyph ranges, so the ~1.1MB file only loads
  when an icon actually renders (latin text stays on Victor Mono)
- Terminal + editor font stacks fall back to it for icons; terminal prewarms it
  and repaints so powerline/oh-my-posh/eza/nvim icons show
- No server/env changes; ships in the spoon-next image (public/)

apps/next/src/components/agent-workspace/code-editor.tsx

@@ -20,7 +20,7 @@ const MonacoEditor = dynamic(async () => await import('@monaco-editor/react'), {
 });
 
 const EDITOR_FONT_FAMILY =
-  "var(--font-victor-mono), 'Geist Mono', ui-monospace, SFMono-Regular, monospace";
+  "var(--font-victor-mono), 'Symbols Nerd Font Mono', 'Geist Mono', ui-monospace, SFMono-Regular, monospace";
 
 type MonacoEditorInstance = {
   getModel?: () => unknown;