MCSERVERVE Bosses

Adds four GeckoLib-animated vampire bosses and a thrall minion: Vampire Overlord, Blood Countess, Crimson Beast, and Night Bat Lord. Each has a spawn egg in the spawn-egg tab plus themed loot items.
Boss highlights:
- Vampire Overlord: three phases with slows/weakness lifedrain, frequent thrall summons, and an enraged damage boost when low.
- Blood Countess: poison/weakness aura, veil strikes that blind and heal her, summons thralls when hurt, goes invisible mid-fight.
- Crimson Beast: leap-and-slam brawler that knocks targets back, applies weakness, and speeds up when enraged.
- Night Bat Lord: flying rushes that levy targets, periodic sonar blindness pulses, and night-vision/haste as health drops.
Thrall minions use melee AI to pressure players and are spawned by boss abilities; a dedicated spawn egg is provided for testing.
Custom loot tables drop unique tokens (Overlord Signet, Countess Veil, Crimson Core, Bat Lord Wing) plus small bonus loot; items live in the combat and tools tabs.
Simple 3D models/animations and solid-color placeholder textures are provided for all entities and items; GeckoLib powers idle/walk/run/attack/death controllers.

Usage

Use the provided spawn eggs to summon bosses in creative mode. Survival encounters are tuned for multiplayer or late-game gear; none spawn naturally.
Defeating bosses awards their signature items via entity loot tables.

Animations and textures are intentionally lightweight placeholders; swap them with detailed assets for a richer presentation.
Loot items are cosmetic/collectible by default. They can be hooked into progression or crafting recipes if desired.