v0.1.2

GeoDebug 0.1.2

Added

• Add geodebug demo for a zero-setup GEO501 buffer failure.
• Add five runnable geospatial failure cases for CRS, grid alignment, dataset overlap,
  and NoData/mask semantics.
• Add a half-pixel raster shift visual for GEO404.

Changed

• Exercise the failure cases in integration CI.
• Smoke-test geodebug demo from the built wheel before release.