GenesisGapFill

# GENESISFILL – PATCH 1
### Automatic Terrain-to-Block Gap Smoothing
**NEW**
- Added the initial standalone **GenesisFill** module.
- Automatically improves terrain transitions around newly placed building blocks.
- No hotkey or manual interaction required.
- GenesisFill reacts directly during normal block placement.
- Detects when a newly placed construction block is directly adjacent to terrain.
- Automatically adjusts the placed block's density so nearby voxel terrain can form a smoother transition around it.
- Uses the existing 7 Days to Die terrain density system instead of replacing or spawning terrain blocks.
- Density correction is applied as part of the normal block placement process.
- Uses the current V3.2.0 b10 block-change and multiplayer synchronization path.
- The placed `BlockValue` itself is not replaced or modified by GenesisFill.
- No automatic terrain blocks are created.
- No terrain blocks are removed.
- No additional savegame data or savegame migration is required.
**SAFETY**
- Terrain blocks themselves are not modified by the fill operation.
- Air and water targets are ignored.
- Blocks using TileEntities are excluded from automatic density modification.
- Functional blocks with persistent data are protected from the fill operation.
- Multi-block objects are currently excluded as a safety measure.
- GenesisFill does not alter inventories, workstation data or other persistent block data.
- Structural Integrity remains controlled entirely by the normal 7 Days to Die system.
**TECHNICAL**
- Developed specifically against **7 Days to Die V3.2.0 b10**.
- Replaces the incompatible legacy `Terrain Block Gap Fill / DVS_Terrainfill` approach.
- Does not use the obsolete `BlockChangeInfo.pos` field.
- Uses the current `BlockChangeInfo` / `BlockValueRef` structure.
- Automatic processing is tied to actual block placement instead of `EntityPlayerLocal.Update`.
- No continuous per-frame terrain scanning.
- No player raycast monitoring.
- No configurable h…