JobView.kind was typed as the merge-extensible JobKind, so the job-controller program, which compiles only the merges it can see, generated a strict codec of bash | subagent for job.rows and job.observe. The first pwsh, pty-send, or workflow job failed frame validation on both ends and the browser dropped the whole roster. The projection now carries kind as a string; JobSpec.kind keeps the Host-side JobKind. A built-artifact smoke parses a pty-send row through the generated schemas, and the seam spec pins the open type.