ClayGrounds v0.3.3 — Floating Island Patch

- Replaced the unresolved custom native-ocean world preset with proven minecraft:flat save creation.
- Removed the ocean requirement entirely.
- ClayGrounds now forms one large connected floating island beneath the existing authored map.
- The island top is an ellipse roughly 392 x 376 blocks at Y55, large enough to support all current authored terrain (map extents are about +/-176).
- The underside tapers through 13 solid layers down to Y43 for an actual hanging-island silhouette.
- Foundation is generated in 55 conservative steps, four modest fills per tick after a 2-second settle period.
- Existing Solmere, Sunwash Strand, Verdant Steps, Claycrest Ruins, Sunken Grotto, class altars, encounters, boss arena, and coordinates are preserved.
- Existing terrain still builds at the proven two-steps-per-three-ticks TamaCrafti-style cadence.
- Total visible work units: 399 (55 foundation + 344 authored terrain).
- No broad ocean-fill phase exists. Only the existing small fountain/Verdant decorative water remains.
- Custom claygrounds_ocean/claygrounds_void Create World presets were removed from this pack because the latest DAI log proved they are unavailable to Minecraft's Create World registry at experience creation time.
