Duality — Reaction & Combat Reliability Update

🛠️ Combat & Reaction Fixes

• Fixed reaction burst damage sometimes being ignored due to Minecraft's damage invulnerability window.
• Fixed delayed chain reactions potentially causing ConcurrentModificationException.
• Fixed chain reaction follow-ups not executing their effects correctly.
• Fixed chain reactions failing to apply damage, visual effects, or elemental consumption.
• Fixed piercing projectiles stopping after the first non-terminal entity hit.
• Piercing projectiles now correctly continue their collision sweep toward the remaining trajectory.
• Improved collision handling for multiple entities along the same projectile path.

⚗️ Elemental Reaction Fixes

• Fixed Abyssal Decay healing reduction not applying consistently to healing effects.
• Prevented Abyssal Decay healing reduction from being applied twice.
• Burning initial damage increased to 4.0.
• Electro-Charged initial damage increased to 5.0.
• Collapse initial damage increased to 12.0.
• Preserved intended periodic damage values for Burning and Electro-Charged.

🧪 Reliability & Testing

• Added regression coverage for the newly fixed reaction and projectile behaviors.
• Expanded reaction gameplay contract tests.
• Full test suite now passes with 68/68 tests successful.
• Production Forge build successfully verified.

⚠️ Known Issues

The following lower-priority issues are still being investigated:

• Reaction slow effects may not yet have a dedicated expiry/removal mechanism.
• Some secondary AoE reaction damage paths still need to be unified with the main reaction damage rules.
• Several long-lived skill state maps may require lifecycle cleanup during extended server runtimes.

This update focuses on making Duality's elemental combat more reliable, predictable, and server-authoritative. More fixes and polish are coming as the reaction and combat systems continue toward release. 🔥⚡🌊❄️