D237: derive the fallback snapshot from the v1.4.2 release artifact

Card: name current release v1.4.2 and its top five

Publish JevBench v1.4.2 data

Publish JevBench v1.4.1 data (#1)

Publish JevBench v1.4 Space and update its card branding

Add snapshot.json

Add style.css

Add README.md

Initial JevBench leaderboard Space

initial commit