Add rollback to move_task: if delete-from-source fails after write-to-
destination, clean up the duplicate. Reject list names with path separators
or '..' to prevent traversal; canonicalize() failures now return errors
instead of silently falling back to unchecked paths. Add validation and
rollback to CLI workspace migration: check destination is empty, track
moved files, and reverse on failure.
Validate that resolved list paths stay within the workspace root to prevent
directory traversal via malicious list names. Enable Content Security Policy
in Tauri config instead of leaving it null. Fix CLI domain extraction to
strip userinfo (user:pass@) from URLs before using as keyring service name.
Tristan Michael