Dynamic Encounter Pacing Update
- Added dynamic per-player pacing for hostile encounters.
- Hostile spawn weights now react to recent combat pressure, alternating action with recovery periods.
- New characters receive an initial action boost to make the opening more engaging.
- Peaceful wildlife and peaceful-only spawn zones remain unaffected.
- Improved multiplayer tracking so encounter pacing applies to the player actually targeted by hostile AI.
- Fixed a rare issue where enemies killed during retreat could return to combat after death.
