X_BROWSER_SERVER_BARREL
Means
browser-reachable code imports a package's server barrel where the package publishes a browser entry
Typical cause
an island's import closure reaches, for example, @ultimat3/entity, whose barrel retains ~1 MB of SQL rendering and @ultimat3/db, while @ultimat3/entity/record is the entry published for a browser (@ultimat3/query → @ultimat3/query/client). The browser entries are derived from each installed manifest's exports (a record, browser or client subpath, packages/cli/src/server-barrels.ts), never listed. Reported by x verify's boundaries step in every app, As of 2026-10
Fix
x verify --only boundaries --json after importing from the browser entry the finding names instead of the barrel