Phayriosis Reborn Continued 0.0.18.9

Scope: tiny gameplay tuning on top of user-confirmed 0.0.18.8 Phase 7A UI baseline.

- Long-range meteor impact sound witness range: 512 -> 1024 blocks.
- Exact current impact sound assets/selection remain unchanged.
- Particle/flash visual range remains 512 blocks.
- Chamber ore target: 42-50 -> 70-80 unique exposed ore blocks.
- Weighting: ~13 iron, 10 biometal, 7 copper, 8 gold, 5 crimsonscale, 2 emerald, 2 diamond, 2 plutonium.
- No Create World UI classes changed.
