chore: bring the token-list enrichment tooling into script/lib (closes #495)
The two node programs and the data file from f7a2437 regenerate the name and
url of each token in src/shared/tokenList.js. They are now CommonJS under
script/lib/, find their files from their own location, and read
ethereum-lists at a pinned commit. The apply step also rewrites an entry that
already has a name and url, so it runs on the current list; on the committed
data it leaves the list unchanged. make enrich-tokens and make
apply-enrichment run them, and README.md names both targets. The data file
carries the MUSD token's on-chain name, so script/check-censored allows that
one literal there too.
Model: opus-5-5
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