ML Generator SR/CR
==================

Generate map sheet polygons for Slovakia and Czechia.

Rules
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- Bundled 1:5000 grids for SR and CR
- SR coarse scales follow UGKK SR rules
- CR coarse scales use bundled CR 1:50000 + 1:5000 grids
- Fine scales use recursive 2x2 subdivision: 1=NW, 2=NE, 3=SW, 4=SE

AOI
---
- Polygon geometry from a polygon layer
- Bounding box of any loaded vector or raster layer

Output
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- Temporary layer
- GeoPackage saved to a selected folder

Fields
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- sheet_name
- sheet_code
- parent_code
- scale
- country
- root_name
- base_5000


