CrashFixer

Fixed

• Fixed a startup crash chain involving CrashFixerConfig initialization during early client bootstrap (seen with Iris/ETF stacks).
• Fixed fireworks-related crash (setTrail(...) NPE) by removing the null-return particle throttle path.
• Improved Elder Guardian area-effect mitigation to use ELECTRIC_SPARK as the lightweight fallback particle.

Changed

• Refactored config handling to lazy, fail-safe initialization with fallback defaults if config handler/load fails.
• Added safer config defaults access for the config screen path.
• Updated version to 3.1.0 for Minecraft 1.21.11.