The Flood: Rising Waters

### 🌊 The Flood: Rising Waters v1.0.0 — Initial Release

#### New Features:
* **Subterranean Origin**: Flood simulation starts from Y = -64 on Day 1.
* **Surface Emergence & Mountain Cap**: Water emerges onto the surface around Day 10–12 and stabilizes at mountain height Y = 110.
* **Airtight Room Detection**: Built-in boundary scanning that protects player bases, doors, and glass domes from water penetration.
* **Anti-Lag Entity Cleanup**: Foliage, torches, and flowers submerge silently without creating entity lag drops.
* **Time Advancement Sync**: Bed sleep skips time proportionally without stalling or desyncing the flood.
* **Operator Command Suite**: Added `/flood get`, `/flood set <Y>`, `/flood pause`, `/flood resume`, and `/flood reset`.
* **Full Server Configuration**: Added server config for speeds, heights, radius, and grace period (`the_flood-server.toml`).

#### Performance & Fixes:
* Implemented time-sliced chunk batching (strict tick budgeting) ensuring zero server TPS drops.
* Integrated fast heightmap pre-calculation for instant surface water rendering.
* Eliminated recursive chunk loading deadlocks.