Add governed Statbel edition probe

frontend/README.md

@@ -10,12 +10,15 @@ require local integrity review or are local artifacts. Only attention items are
 expanded by default; all source detail remains available through disclosure.
 The refresh button reruns the local read-only audit and never downloads or
 replaces source data. A separate `Officiële edities controleren` action is the
-only trigger for bounded GRB/orthophoto catalog reads and the official ALZ
-publication-page check. It presents official and local editions,
+only trigger for bounded GRB/orthophoto catalog reads, the official Statbel
+population DCAT check and the official ALZ publication-page check. It presents
+official and local editions,
 layer/publication evidence and honest non-comparable version markers without
 starting an import or background poll. ALZ v1/v2 snapshots are labelled
 provisional; only the latest definitive v3 edition is compared with local
-history.
+history. Statbel reports the current population reference year separately from
+the sector-geometry edition and treats the old 2025 REDEGEO layout only as
+transition evidence.
 After that explicit check, the same surface shows a compact GRB refresh plan
 for buildings, roads, water and parcels. It states whether each local regional
 snapshot is current, updateable or needs review and shows the current object