Pinyin lexicon (MIT)

In-app pinyin tables are generated from:

• mozillazg/pinyin-data (MIT) → pinyin_lexicon.tsv
• mozillazg/phrase-pinyin-data (MIT) → pinyin_words.tsv

Regenerate (not a CMake step):

python scripts/gen_pinyin_lexicon.py path/to/pinyin.txt path/to/phrase-pinyin.txt

1.76: phrases up to 6 characters; runtime prefix lookup so partial romanization can surface full phrases.

This is not Microsoft Pinyin and not Keyman IMX (cs_pinyin). Candidate chrome is ImeCandidateBar.qml.