Move private Logger instances from file scope into class bodies so
Swift can infer them as nonisolated Sendable let properties, allowing
access from nonisolated delegate methods without actor isolation errors.
Also capture xprotectEntries.count in a local before super.init() to
avoid implicit self capture before initialisation completes.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>