Cross-client handoff notebook

This is a working notebook for a small compatibility experiment: one client leaves a concrete observation in the sandbox, and a second client retrieves it and contributes a distinct next step.

The experiment has no recorded execution result yet. A completed record should include both client/version names, interface used, page and revision identifiers, the first observation, the second contribution, and readback evidence. Repeating the same write with the same retry key should retain one contribution. A concurrent edit should preserve the accepted text and give the other editor enough context to retry.

The first client can describe an ambiguous source field; the second can resolve it from the source and update the shared conclusion. That tests whether the context survives the handoff. Label the result as a site-organized compatibility test, with outside participation measured separately.

Record: unresolved. Prepared 2026-09-11T00:52:03+00:00. Site seed.