FuzNugz Special Creeper configuration notes

Target: Minecraft Java Edition 1.20.1
Loader: Forge 47.2.0
Java: 17
Visual requirement: OptiFine HD U I6

Phase timing:
Phase 1: 0-23999 world ticks
Phase 2: 24000-47999
Phase 3: 48000-95999
Phase 4: 96000-143999
Phase 5: 144000+

New Phase 5 behaviors:
- vanilla creeper AI restored for walking/chasing
- nearby window glass/glass panes may be broken as a player-structure heuristic
- mine clues from torches, lanterns, rails, and open tunnel/shaft spaces are used during stalking
- at close range in Phase 5, the special creeper deals a lethal hit and is permanently removed; the global finished flag prevents recreation

Unkillable: the special creeper has Invulnerable:1b enforced every tick and cannot be damaged/hit. Normal creepers are unaffected.
