The installation guide says malformed client configuration stops
`rea uninstall`, but uninstall reported that client as failed and still
removed other clients' registrations, the bundled skill, and with
--purge-data REA's cache and state.
Inspect every client configuration first, using the conditions setup
already treats as blocking (unsafe path, unreadable file, malformed
document), and stop before any removal when one fails. Purge paths that are
symbolic links are still retained and reported per item, as the guide now
states.
Fixes#1164
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>