Collision Effects 1.21.11-1.0

Initial public release backported to 1.21.11

Features

Bug Splatter
- Biome-aware spawn multipliers (jungle/swamp)
- Ground-proximity-based spawn tuning
- Movement-aware spawning and screen-space distribution
Damage and Status Overlays
- Instant damage tint flash
- Low-health tint
- Low-health vignette
Explosion Effects
- Explosion debris overlays with fade-out behavior
- Explosion flash overlay for nearby forward-facing blasts
Mob Interaction Effects
- Bee pollen effects (touch, hit, and pollinated-bee damage cases)
- Chicken feathers (touch and hit)
- Llama spit splatters
- Magma cube splatters (touch, hit, and damaged cases)
- Slime splatters (touch, hit, and damaged cases)
- Spider/cave spider splatters (hit)
- Squid ink vignette
- Sulfur cube splatters (touch and hit)
- Wither vignette
Water and Lava Effects
- Lava splatters on lava entry, lava exit, and surface movement
- Water droplets on water entry, water exit, and surface movement
Weather Effects
- Rain droplets with both stream and splash behavior
- Snowball clumps triggered by nearby snowball impacts
- Snowflakes with continuous weather-based accumulation