EmakiAttribute | RPG Attributes and Damage

Added

• Effect-group temporary attributes with explicit combination and replacement policies.
• Registrable derived-attribute providers and third-party equipment-slot providers.

Changed

• Snapshot collection now uses registered slots and enforces declared value ranges.
• Damage stages, PDC-source lifecycle, and live-entity operations follow the current role, formula, and owner-thread contracts.

Fixed

• Restored MythicMobs targeter support for emaki_damage.
• Made perfect-takeover pending-event tracking safe for concurrent region execution.

Upgrade Notes

• Back up data, run the CoreLib PDC migration dry-run, and verify custom MythicMobs skills and provider registrations after updating.