Log structured details when Discord persistent component registry state falls back after a store failure.
- Format Error name, message, stack, and cause metadata at the Discord registry warning call site.
- Forward plugin runtime logger metadata to the underlying child logger.
- Add focused regression coverage for the Discord fallback warning and runtime logging adapter.
- Add changelog credit for @100menotu001.
Fixes#84185.
Co-authored-by: OpenClaw Contributor <100menotu001@users.noreply.github.com>
Co-authored-by: Craig <froelich@craigs.mac.studio.froho>
