fix: query persisted work area geometry

backend/app/schemas/operations.py

@@ -1,5 +1,7 @@
 from __future__ import annotations
 
+from uuid import UUID
+
 from pydantic import BaseModel, Field, field_validator
 
 
@@ -210,6 +212,7 @@ class VectorSelectionBBox(BaseModel):
 
 class VectorSelectionRequest(BaseModel):
     bbox: VectorSelectionBBox
+    area_id: UUID | None = None
     limit: int = Field(default=100, ge=1, le=1000)
 
 
@@ -229,6 +232,7 @@ class VectorSelectionSummary(BaseModel):
 
 class VectorSelectionResponse(BaseModel):
     selection_bbox: VectorSelectionBBox
+    selection_area_id: UUID | None = None
     feature_count: int
     total_feature_count: int | None = None
     limit: int