fix(platform): govern geospatial analysis and raster handoffs

backend/app/services/flood_hazard_analysis_service.py

@@ -232,7 +232,6 @@ class FloodHazardAnalysisService:
         try:
             import numpy as np
             import rasterio
-            from rasterio.features import geometry_mask
             from rasterio.mask import mask
         except ImportError as exc:
             raise AppError(code="RASTER_PROCESSING_UNAVAILABLE", message="Rasterio and numpy are required for flood-hazard analysis", status_code=503) from exc