ClayGrounds v0.2.3 Datapack Patch

- Preserves the v0.2.2-authored terrain geometry and the contained Solmere fountain.
- Replaces full-map startup generation with 64 staged 48x48 cells (3x3 chunks each).
- A cell is force-loaded, given 2 ticks to become resident, built, then immediately released.
- Only one cell is force-loaded for construction at a time.
- Enemy spawning, safety processing, player gameplay tick, and boss lifecycle are gated until generation completes.
- Player is kept safely on the arrival pad while generation runs.
- Generation starts only after at least one player has entered the world.
- World build state is scoreboard-backed and survives save/reload.
- Removed load-time deletion of cg_visual item displays so persistent enemy carrier visuals survive reloads.
- Updated pack metadata for Minecraft Java 26.2 / datapack format 107.1.

Generated cells: 64
Largest cell command count: 176
