Hunk defaults and wrapping no longer belong to a staging panel. Rename both
public keys with automatic migration, and remove panel-era English strings so
config, UI, schema, and generated docs describe the surviving interface.
Co-Authored-By: GitHub Copilot <copilot@github.com>
Removing a whole or partial patch from its source commit, and replacing
a patch when the user selects another commit, must not depend on
entering a patch-building panel. Keep those state transitions covered
through the diff that now owns patch selection.
Co-Authored-By: GitHub Copilot <copilot@github.com>