SUBS-017: parent be post be://localhost?/<proj> recurses into a sub and fails WIRECLFL though the sub's project exists in the remote

A parent be post be://localhost?/dogs recurses (be: post abc) and the submodule push dies WIRECLFL/BEDOGEXIT, even though the sub's project DOES exist in the remote ~/.be (a direct be post --nosub be://localhost?/abc from inside the sub pushes fine). So the sub-recursion derives the wrong remote target / branch for the sub instead of pushing it to its own project in the same peer. See POST, Submodules, CLAUDE, submodule-parent-source-fetch, submodule-synthetic-branch-post.

Issues

The recursive sub push targets the wrong remote coordinate.

Blockers

Depends on how the parent derives a sub's remote target (mirror of the parent-source FETCH logic, submodule-parent-source-fetch).

Planned

Recurse the sub push to the sub's own project on the same peer.