Add Nerd Font icon fallback to the Terminal so Starship-style prompts render correctly

Bundles Symbols Nerd Font Mono (MIT, ryanoasis/nerd-fonts) as a glyph-only @font-face and appends it to every Terminal font-family option, so distro icons / git branch glyphs / etc. from prompts like Starship show up instead of broken-glyph boxes. It carries no letterforms, so it never changes how normal text renders.

public/fonts/NERD-FONTS-LICENSE.txt

@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Ryan L McIntyre
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

src/index.css

@@ -1,5 +1,13 @@
 @import "tailwindcss";
 
+@font-face {
+  font-family: 'Symbols Nerd Font Mono';
+  src: url('/fonts/SymbolsNerdFontMono-Regular.woff2') format('woff2');
+  font-weight: normal;
+  font-style: normal;
+  font-display: swap;
+}
+
 @theme {
   --color-page: #0D0E10;
   --color-card: #141518;

src/lib/terminalPrefs.ts

@@ -38,7 +38,7 @@ export interface TabState {
 const PREFS_KEY = 'archnest-terminal-prefs'
 
 export function defaultPrefs(): TerminalPrefs {
-  return { themeName: TERM_THEMES[0].name, fontSize: 13, fontFamily: 'ui-monospace, SFMono-Regular, Menlo, monospace' }
+  return { themeName: TERM_THEMES[0].name, fontSize: 13, fontFamily: 'ui-monospace, SFMono-Regular, Menlo, monospace, "Symbols Nerd Font Mono"' }
 }
 
 export function loadPrefs(): TerminalPrefs {

src/pages/Terminal.tsx

@@ -8,10 +8,15 @@ const GOLD = '#C8A434'
 const TEXT_SECONDARY = '#7A7D85'
 
 const FONT_SIZES = [11, 12, 13, 14, 15, 16]
+// "Symbols Nerd Font Mono" is appended as a glyph-only fallback to every option, so
+// distro icons / git branch / etc. from prompts like Starship render instead of
+// showing as boxes — it has no letterforms of its own, so it never overrides the
+// chosen base font for normal text.
+const NERD_FALLBACK = '"Symbols Nerd Font Mono"'
 const FONT_FAMILIES = [
-  { name: 'Monospace', value: 'ui-monospace, SFMono-Regular, Menlo, monospace' },
+  { name: 'Monospace', value: `ui-monospace, SFMono-Regular, Menlo, monospace, ${NERD_FALLBACK}` },
-  { name: 'Fira Code', value: '"Fira Code", ui-monospace, monospace' },
+  { name: 'Fira Code', value: `"Fira Code", ui-monospace, monospace, ${NERD_FALLBACK}` },
-  { name: 'JetBrains Mono', value: '"JetBrains Mono", ui-monospace, monospace' },
+  { name: 'JetBrains Mono', value: `"JetBrains Mono", ui-monospace, monospace, ${NERD_FALLBACK}` },
 ]
 
 export default function Terminal() {