feat: add temporal Mol explorer

backend/app/services/raster_operations_service.py

@@ -12,7 +12,7 @@ from shapely.ops import transform as shapely_transform
 from shapely.validation import make_valid
 
 from app.core.errors import AppError
-from app.models import Area, Dataset
+from app.models import Area, Dataset, DatasetVersion
 from app.services.raster_service import extract_raster_metadata
 from app.services.storage_service import StorageService
 
@@ -333,6 +333,21 @@ class RasterOperationsService:
             name=output_name,
             dataset_type="raster",
             source=f"operation:{operation_name}",
+            dataset_role="derived",
+            source_name=source_dataset.source_name,
+            source_metadata=source_dataset.source_metadata,
+            provenance_metadata=provenance,
+            imported_at=datetime.now(timezone.utc),
+            temporal_series_key=(
+                f"{source_dataset.temporal_series_key}:{operation_name}"
+                if source_dataset.temporal_series_key
+                else None
+            ),
+            observed_at=source_dataset.observed_at,
+            valid_from=source_dataset.valid_from,
+            valid_to=source_dataset.valid_to,
+            temporal_granularity=source_dataset.temporal_granularity,
+            source_version=source_dataset.source_version,
             storage_path=str(output_file),
             original_filename=storage_metadata["original_filename"],
             stored_filename=storage_metadata["stored_filename"],
@@ -348,6 +363,20 @@ class RasterOperationsService:
             status="ready",
         )
         db.add(derived_dataset)
+        db.add(
+            DatasetVersion(
+                dataset_id=derived_dataset.id,
+                version=1,
+                storage_path=derived_dataset.storage_path,
+                source_version=derived_dataset.source_version,
+                observed_at=derived_dataset.observed_at,
+                valid_from=derived_dataset.valid_from,
+                valid_to=derived_dataset.valid_to,
+                checksum_sha256=derived_dataset.checksum_sha256,
+                source_metadata=derived_dataset.source_metadata,
+                provenance_metadata=derived_dataset.provenance_metadata,
+            )
+        )
         db.commit()
         db.refresh(derived_dataset)
         return derived_id