Elementals 1.48.6 GeckoLib Forge 4.8.4 Connector Compat
Server NBT Bootstrap + Built-In Fire Wisp

Based on working jar:
- elementals-1.48.6-geckolib-forge-4.8.4-connector-compat-server-nbt-bootstrap.jar
- sha256: c5a3906254825f42f1a4cec8bcd22758be8b7bd47139534bce61ce63cfa4a60a

This build keeps:
- GeckoLib Forge 4.8.4 renderer compatibility fix
- Dedicated-server NBT bootstrap fix
- Disabled fragile Elementals upgrade-list NBT sync

Added:
- Built-in multiplayer-safe Fire Wisp behavior
- Active Nether spawning near players
- Manual test function: /function elementals:summon_fire_wisp

Fire Wisp implementation:
- Uses vanilla minecraft:vex as the base entity
- Tags it with elementals_fire_wisp
- Gives invisibility and fire resistance
- Emits flame/smoke/lava particles
- Deals fire contact damage

Why this method:
- Avoids custom entity registration
- Avoids custom attribute registration
- Avoids custom network packets
- Avoids custom NBT reads/writes
- Avoids the previous join/kick crashes
