Validator hardcodes maximum durations for dangerous effects:
- Levitation: 15s max (player floats into sky and dies from fall)
- Wither: 30s max (drains health, can kill)
- Poison: 60s max
- Nausea: 30s max
12 training examples: levitation safety, emergency clear, duration caps,
"I can't stop floating" → clear levitation + slow falling
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
