Sinhala and Tamil file names showed as boxes on the home screen, in Recent
and in document tabs: no embedded face covers either script, and the
installed-font fallback did not look for one.
Add sinhala_fallback() and tamil_fallback(), each probing for its script's
letter ka, and end every interface family with them:
- macOS: Sinhala Sangam MN / Sinhala MN, Tamil Sangam MN / Tamil MN
- Windows: Nirmala UI, then Iskoola Pota (Sinhala) or Latha (Tamil)
- Linux: Noto Sans Sinhala / Noto Sans Tamil, Lohit Tamil
The faces are read at runtime, never embedded or shipped, and
PDFCRAFT_SYSTEM_FONTS=0 still turns them off.
Co-authored-by: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
