The test lab — nothing is mocked
A SQL database living entirely inside Vercel Blob storage. Try the dialect in the console, export the escape hatch, then hammer the commit protocol with concurrent writers below.
SQL console
a seeded demo database (customers, orders) living entirely in Blob storage — full v1 dialect, honest errors
Commit-protocol stress lab
Concurrent writers hammer one Larva database — appends exercise the rebase path, shared-counter increments force full re-execution — then the final state is audited for lost updates, duplicates, and version drift. Design §6, tested for real.