Add Mol multi-zone operational validation

backend/README.md

@@ -460,6 +460,13 @@ manifests generated for AI handoff include source CRS metadata so pixel-space
 model outputs can be transformed to WGS84 GeoJSON coordinates. Current V1 upload
 support is limited to GeoTIFF-style rasters and GeoJSON/JSON reference vectors.
 
+When `REAL_AREA_BBOX=minx,miny,maxx,maxy` is supplied, the same workflow also
+persists an EPSG:4326 project Area before uploading data. `REAL_AREA_NAME` and
+`REAL_PROJECT_REGION` retain operator context. The multi-sample runner fills
+these values from manifest `wgs84_bbox` and municipality metadata, so generated
+projects are immediately usable in the map without an alternate persistence
+path or API contract.
+
 To prepare the documented operator sample corpus inside the all-in-one runtime
 container, run:
 
@@ -477,6 +484,12 @@ empty GRB FeatureCollections for negative-tile training; normal reference AOIs
 still fail when GRB returns no buildings. These are runtime artifacts only and
 are not committed to Git.
 
+Mol additionally has operational holdouts for Achterbos, Gompel, Donk and
+Postel, with Mol center as the historical baseline and Postel-bos as a separate
+background control. Prepare and execute that pack with the documented
+`prepare_operator_real_data_samples.py` and
+`run_mol_operational_validation.sh` commands in `scripts/README.md`.
+
 The current recommended local building model is
 `geointel-building-yolov8s-smallbld-minpx3-img640-ft30-pt` with tile size
 `512`, overlap `64` and confidence threshold `0.15`. Its SHA256 is