Validate legacy GRB snapshot evidence

backend/tests/test_sprint187_temporal_map_foundation.py

@@ -142,8 +142,12 @@ def governed_grb_dataset(*, project_id, observed_day: int) -> Dataset:
     dataset.temporal_series_key = "grb:buildings:kempen-transport-region"
     dataset.source_metadata = {
         "authority_level": "authoritative",
-        "geometry_clipped_to_area": True,
         "collection": "GRB/GBG",
+        "coverage_scope": "kempen-transport-region",
+        "scope_type": "transport_region",
+        "member_count": 28,
+        "partition_count": 28,
+        "partition_strategy": "municipality_bbox_maximum_boundary_intersection",
         "selection_aggregation": {
             "method": "intersection_area",
             "label": "Bebouwde grondoppervlakte",
@@ -153,7 +157,13 @@ def governed_grb_dataset(*, project_id, observed_day: int) -> Dataset:
     dataset.provenance_metadata = {
         "operator_tool": "provision_regional_grb_buildings.py",
         "reference_truncated": False,
+        "manifest_path": "/storage/operator/grb/manifest.json",
+        "source_url": "https://geo.api.vlaanderen.be/GRB/ogc/features/v1/collections/GBG/items",
+        "artifact_sha256": "a" * 64,
+        "partition_checksums": {f"{index:05d}": "b" * 64 for index in range(28)},
     }
+    if observed_day > 14:
+        dataset.source_metadata["geometry_clipped_to_area"] = True
     return dataset
 
 
@@ -414,6 +424,13 @@ def test_governed_grb_object_history_fails_closed_for_unverified_identity() -> N
     assert warnings == ["De geselecteerde objecten bevatten geen volledig verifieerbare stabiele bronidentiteit."]
 
 
+def test_legacy_grb_identity_requires_complete_partition_evidence() -> None:
+    dataset = governed_grb_dataset(project_id=uuid4(), observed_day=14)
+    dataset.provenance_metadata["partition_checksums"] = {"13025": "b" * 64}
+
+    assert TemporalAnalysisService._identity_contract(dataset) is None
+
+
 def test_temporal_frontend_and_official_operator_contracts_exist() -> None:
     workspace = (ROOT / "frontend/src/components/map/MapWorkspace.tsx").read_text(encoding="utf-8")
     temporal_api = (ROOT / "frontend/src/services/api/temporal.ts").read_text(encoding="utf-8")