‖ (U+2016) and ▾ (U+25BE) are absent from FiraMono and rendered as
boxes on device. Replace with || (ASCII) and ↓ (U+2193, Arrows block)
which are confirmed FiraMono-safe alongside the existing ≡ ← →.
Also removes the erroneous Android-only TextFont split introduced in
22303c6: that split accidentally used Bevy's built-in ASCII-only bitmap
font instead of FiraMono on Android, causing ALL non-ASCII HUD glyphs
to render as boxes. Now both platforms use the same FiraMono handle.
Separately, suppress the "Tab = next field" hint in the sync login
modal on Android (no Tab key on mobile).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
funman300
4f0080dfbc