Persist map selections as derived datasets

backend/app/schemas/__init__.py

@@ -72,6 +72,7 @@ from .operations import (
     VectorOperationRequest,
     VectorOperationResult,
     VectorSelectionBBox,
+    VectorSelectionDeriveRequest,
     VectorSelectionRequest,
     VectorSelectionResponse,
     VectorStatsRequest,
@@ -126,6 +127,7 @@ __all__ = [
     "VectorOperationRequest",
     "VectorOperationResult",
     "VectorSelectionBBox",
+    "VectorSelectionDeriveRequest",
     "VectorSelectionRequest",
     "VectorSelectionResponse",
     "RasterClipRequest",

backend/app/schemas/operations.py

@@ -213,6 +213,10 @@ class VectorSelectionRequest(BaseModel):
     limit: int = Field(default=100, ge=1, le=1000)
 
 
+class VectorSelectionDeriveRequest(VectorSelectionRequest):
+    output_name: str | None = None
+
+
 class VectorSelectionResponse(BaseModel):
     selection_bbox: VectorSelectionBBox
     feature_count: int