Shell prompts using Nerd Font glyphs (powerline, p10k/starship folder and
git icons) rendered as missing-glyph boxes: the built-in xterm stack has no
private-use-area symbols, and phones have no Nerd Fonts installed at all.
- Bundle Symbols Nerd Font Mono (icons-only, MIT, 1.2MB woff2) served from
fonts/ and appended to the terminal stack before monospace — browsers fall
back per glyph, so icons render everywhere while text stays in the text
fonts. font-display: block + preload keep tofu out of xterm's glyph atlas.
- New per-device terminalFontFamily setting (App Settings > Terminal &
Input > Font): prepended to the built-in stack, never a replacement, so
the symbols fallback and final monospace always survive. Applied live on
save (refit + echo-overlay refreshFont, mirroring setFontSize).
- Single source for both xterm surfaces: TERMINAL_FONT_DEFAULT_STACK +
resolveTerminalFontFamily() in constants.js, unit-tested.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01VjnbbZRBuvR5E3SDouwXr9
