laer-klokken chat posted ɨ ɑČŧ Ľīĸę îɱ öĸąý ɓʊţ and ♫⃠; the X11 6x10 fallback face has no IPA letters (ɑ ɓ ɨ ɱ ʊ) or U+20E0, so font_1 drew nothing. The endpoint now consults system/backend/bdf-supplement.mjs on every miss (batch, single-char, and BDF-fetch failure). Native: widen the unifont subset to include IPA Extensions and Combining Diacritical Marks for Symbols; regenerate font-unicode.h (1754 → 1898 glyphs, baseline verified byte-identical first). Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>