This update is a major combat polish + stability release focused on modular legacy systems, better knockback consistency, stronger region/PvP handling, improved lag compensation, and more configuration control.

Added

• Added a new Legacy Reach module with configurable survival reach, creative reach, and hitbox margin settings for servers that support the newer interaction range attributes.
  
  
• Added more custom item behavior controls, including configurable shield disable/durability behavior for axes, shield reactions to arrows and fishing rods, and expanded chorus fruit/totem behavior options.
  
  
• Expanded knockback profile configuration with projectile punch scaling, projectile speed multipliers, per-profile combat cooldown toggles, and attack speed / hit delay values.
  

Improved

• The legacy PvP system is now much more modularized, with the main legacy manager enabling dedicated feature modules for elytra, offhand, no-lapis, burn delay, regen, projectile damage, armor, sword sweep, tool damage, potion handling, projectile randomization, golden apples, reach, and player collisions.
  
  
• Improved region protection handling so player-vs-player checks flow through registered hooks, including WorldGuard plus vanilla world PvP, with clearer debug logging when damage is denied.
  
  
• Improved the WorldGuard PvP check so it verifies PvP at both the victim location and the attacker location, helping prevent safezone edge cases.
  
  
• Improved lag compensation for modern Paper/Folia environments by using concurrent history storage, de-duplicated sampling, safer interpolation, chunk-loaded guards, and configurable move-event sampling.
  
  
• Improved ping tracking by smoothing RTT/jitter more safely, supporting transaction-based tracking when available, and falling back cleanly when the server version does not support those packets.
  
  
• Improved PvP sound suppression and custom sound filtering so sound keys are normalized more reliably across versions and packet formats.
  

Fixed

• Fixed multiple custom knockback consistency issues, including runtime config toggle checks, per-profile combat state application, safer projectile handling, and cleaner protection checks before applying custom PvP effects.
  
  
• Fixed vertical knockback stacking / instability by clamping vertical values more aggressively, reducing upward carry, and handling shield/netherite scaling more safely.
  
  
• Fixed the long-standing fire aspect / fire tick i-frame issue where low fire damage could interfere with the real combat damage baseline and cause extra knockback behavior.
  
  
• Fixed random hit detection misses caused by unsafe ray-box intersection math that could previously divide by zero and produce invalid values.
  
  
• Fixed several production-readiness issues across config loading, projectile behavior, sound filtering, and hit/damage processing as part of the broader 2.6.0 stabilization work. This is reflected in the enlarged config surface and the more defensive handling now present across combat managers and listeners.