Add regional historical land-use operator

backend/README.md

@@ -1046,7 +1046,7 @@ storage. They never run on app startup.
 Historical land-use work can be bounded explicitly:
 
 ```bash
-docker exec geointel python /app/scripts/provision_mol_historical_landuse.py --years 1778 1969 --themes forest water
+docker exec geointel python /app/scripts/provision_mol_historical_landuse.py --years 1778,1969 --themes forest,water
 ```
 
 `GET /api/v1/projects/{project_id}/temporal/series` discovers the series and
@@ -1066,7 +1066,8 @@ docker exec geointel python /app/scripts/provision_regional_timeseries.py
 
 This resolves the retained official boundary and imports five Statbel
 population snapshots plus five modern forest, water, built-function and
-transport-infrastructure snapshots into
+transport-infrastructure snapshots, followed by the 1778/1873/1969 historical
+building, water and road snapshots, into
 `Kempen Regional Workbench`. Mol and regional series keys remain separate and
 existing immutable datasets are reused. Complete statistical sectors use exact
 published totals; a rectangle cutting a sector remains an area-weighted
@@ -1076,6 +1077,20 @@ The regional forest path partitions WCS requests by official municipality to
 stay within upstream response limits, then builds one retained 10 m mosaic and
 one normal regional vector Dataset. A failed source request leaves completed
 partition artifacts reusable and never lowers source resolution silently.
+Historical WFS retrieval is likewise partitioned by all 28 municipality
+boundaries because broad WFS counts stop at 10,000. Exact source responses are
+retained as checksummed gzip artifacts before clipping and regional assembly.
+Run that stage independently when needed:
+
+```bash
+docker exec geointel python /app/scripts/provision_regional_historical_landuse.py
+```
+
+Use `--fetch-only` for source/artifact validation without persistence. The
+historical building class represents mapped built land-use surfaces, not
+individual building footprints; water remains surface area, not depth or
+volume; historical roads are mapped road surfaces, not present-day centerline
+length.
 
 Official operator datasets record that their geometries were clipped to the
 persisted Area. When that exact Area is selected, vector totals and aggregate