The corpus now derives from emoji-test.txt (sha256 pinned), keeps single code points of any digit
count, and lists the emoji Twemoji lacks. The script runs only on linux, Python 3.13, image
python:3.13-slim and records those in the lock; identical pins with a different font exit 1 and
leave the committed font and lock untouched.
Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>
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