Expand failed regional building contexts

backend/tests/test_belgium_training_portfolio.py

@@ -32,3 +32,19 @@ def test_portfolio_bbox_is_metric_sized() -> None:
     bounds = to_metric.transform_bounds(bbox["min_x"], bbox["min_y"], bbox["max_x"], bbox["max_y"])
     assert 255 <= bounds[2] - bounds[0] <= 258
     assert 255 <= bounds[3] - bounds[1] <= 258
+
+
+def test_failure_driven_expansion_is_train_only_and_context_complete() -> None:
+    additions = [aoi for aoi in module.AOIS if aoi.slug.endswith("-v31") or "-v31-bg" in aoi.slug]
+    assert len(additions) == 18
+    assert {aoi.split for aoi in additions} == {"train"}
+    assert {aoi.region for aoi in additions} == {"flanders", "wallonia"}
+    contexts = {(aoi.region, aoi.context) for aoi in additions}
+    assert {
+        ("flanders", "industrial"),
+        ("flanders", "ribbon-development"),
+        ("flanders", "coastal-urban"),
+        ("wallonia", "dense-urban"),
+        ("wallonia", "rural-town"),
+        ("wallonia", "regional-architecture"),
+    } <= contexts

docs/BELGIUM_BUILDING_TRAINING_LOOP.md

@@ -67,6 +67,15 @@ contexts. Its remaining known gaps are:
 
 The active production model remains unchanged while any gate fails.
 
+The v31 expansion adds eighteen independent train-only AOIs after the v30
+rotated-holdout calibration isolated the remaining domain gaps. Nine Flemish
+AOIs cover industrial roofs, ribbon development and coastal urban fabric. Nine
+Walloon AOIs add dense urban, rural-town, regional-architecture and difficult
+industrial/rail/quarry negatives. Existing validation, calibration, test and
+background-test AOIs remain frozen. The provisioner can load a short-lived
+operator session from a mode-0600 token file, allowing governed acquisition on
+an authenticated runtime without exposing credentials in process arguments.
+
 ## Reproducible evidence
 
 - corpus assembler: `scripts/assemble_belgium_building_corpus.py`;

docs/CODEX_EXECUTION_LOG.md

@@ -6,6 +6,11 @@
   per-AOI calibration evidence. Protected calibration, test, background-test
   and validation tiles remain excluded; manifests now record targeted contexts
   and their stronger repeat factors for reproducible follow-up iterations.
+- Prepared the next immutable corpus expansion with eighteen spatially
+  independent train-only AOIs: nine Flemish industrial/ribbon/coastal samples
+  and nine Walloon dense/rural/architecture or difficult-negative samples.
+  Added mode-0600 session-token-file support to the official provisioner so
+  authenticated Tower acquisition does not expose session material in argv.
 
 ## 2026-07-27 - Guest demo and product professionalization
 

scripts/provision_belgium_building_training_portfolio.py

@@ -81,6 +81,17 @@ AOIS = (
     Aoi("brasschaat-heath-train-v12-bg", "flanders", "heath-hard-negative", "train", 4.525, 51.350, "background_candidate"),
     Aoi("limburg-pine-train-v12-bg", "flanders", "forest-hard-negative", "train", 5.680, 51.020, "background_candidate"),
     Aoi("westhoek-field-train-v12-bg", "flanders", "farmland-hard-negative", "train", 2.720, 50.990, "background_candidate"),
+    # v31 failure-driven corpus expansion: independent examples matching the
+    # protected Genk/Lokeren/Ostend calibration failure contexts.
+    Aoi("tessenderlo-industry-train-v31", "flanders", "industrial", "train", 5.087, 51.065),
+    Aoi("maasmechelen-industry-train-v31", "flanders", "industrial", "train", 5.691, 50.963),
+    Aoi("izegem-industry-train-v31", "flanders", "industrial", "train", 3.209, 50.920),
+    Aoi("zele-ribbon-train-v31", "flanders", "ribbon-development", "train", 4.040, 51.066),
+    Aoi("putte-ribbon-train-v31", "flanders", "ribbon-development", "train", 4.632, 51.053),
+    Aoi("overpelt-ribbon-train-v31", "flanders", "ribbon-development", "train", 5.424, 51.211),
+    Aoi("nieuwpoort-coastal-train-v31", "flanders", "coastal-urban", "train", 2.749, 51.130),
+    Aoi("knokke-coastal-train-v31", "flanders", "coastal-urban", "train", 3.289, 51.340),
+    Aoi("bredene-coastal-train-v31", "flanders", "coastal-urban", "train", 2.976, 51.235),
     Aoi("bruges-val", "flanders", "historic-urban", "val", 3.224, 51.209),
     Aoi("turnhout-val", "flanders", "suburban", "val", 4.944, 51.322),
     Aoi("hasselt-cal", "flanders", "suburban", "calibration", 5.340, 50.930),
@@ -119,6 +130,17 @@ AOIS = (
     Aoi("peruwelz-train-v12", "wallonia", "mixed-urban", "train", 3.591, 50.509),
     Aoi("ardenne-clearing-train-v12-bg", "wallonia", "forest-hard-negative", "train", 5.460, 50.080, "background_candidate"),
     Aoi("condroz-open-train-v12-bg", "wallonia", "farmland-hard-negative", "train", 5.020, 50.390, "background_candidate"),
+    # v31 precision correction: independent positives plus difficult negatives
+    # for the weak Walloon dense/rural/regional-architecture contexts.
+    Aoi("herstal-dense-train-v31", "wallonia", "dense-urban", "train", 5.630, 50.665),
+    Aoi("dison-dense-train-v31", "wallonia", "dense-urban", "train", 5.854, 50.612),
+    Aoi("gembloux-rural-train-v31", "wallonia", "rural-town", "train", 4.692, 50.561),
+    Aoi("soignies-rural-train-v31", "wallonia", "rural-town", "train", 4.071, 50.579),
+    Aoi("stavelot-architecture-train-v31", "wallonia", "regional-architecture", "train", 5.931, 50.395),
+    Aoi("aubel-architecture-train-v31", "wallonia", "regional-architecture", "train", 5.859, 50.704),
+    Aoi("liege-brownfield-train-v31-bg", "wallonia", "industrial-hard-negative", "train", 5.607, 50.624, "background_candidate"),
+    Aoi("charleroi-rail-train-v31-bg", "wallonia", "rail-hard-negative", "train", 4.467, 50.421, "background_candidate"),
+    Aoi("condroz-quarry-train-v31-bg", "wallonia", "quarry-hard-negative", "train", 5.190, 50.365, "background_candidate"),
     Aoi("tournai-val", "wallonia", "historic-urban", "val", 3.389, 50.606),
     Aoi("arlon-val", "wallonia", "small-city", "val", 5.817, 49.683),
     Aoi("verviers-cal", "wallonia", "suburban", "calibration", 5.860, 50.590),
@@ -212,8 +234,18 @@ def main() -> int:
     parser.add_argument("--side-m", type=float, default=256.0)
     parser.add_argument("--resolution-m", type=float, default=0.25)
     parser.add_argument("--force-refresh", action="store_true")
+    parser.add_argument(
+        "--session-token-file",
+        type=Path,
+        help="Read an operator session token from a local mode-0600 file instead of exposing it on the command line.",
+    )
     args = parser.parse_args()
     session = requests.Session()
+    if args.session_token_file:
+        token = args.session_token_file.read_text(encoding="utf-8").strip()
+        if not token:
+            raise SystemExit("--session-token-file is empty")
+        session.cookies.set("geointel_session", token)
     samples: list[dict[str, Any]] = []
     if args.output_spec.is_file():
         existing = json.loads(args.output_spec.read_text(encoding="utf-8-sig"))