fix(api): inspectorate and Ofsted listing in payloads; Ofsted links that resolve (H4)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

backend/tests/test_inspection_status_payload.py

@@ -0,0 +1,63 @@
+"""Audit H4: every payload that feeds an Ofsted badge carries the inspectorate
+GIAS names and whether Ofsted's own data lists the school, so the site never
+says "Not yet inspected" on the strength of missing data."""
+
+import pandas as pd
+import pytest
+from fastapi.testclient import TestClient
+
+
+def _df():
+    base = dict(year=202425, local_authority='Cambridgeshire', local_authority_code=873,
+                postcode='CB1 1AA', latitude=52.2, longitude=0.12, address='1 High St',
+                status='Open', town='Cambridge')
+    return pd.DataFrame([
+        dict(base, urn=136083, school_name='Abbey College Cambridge', phase='Secondary',
+             school_type='Other independent school', inspectorate='ISI', ofsted_listed=False),
+        dict(base, urn=150031, school_name='Abbas and Templecombe Church School', phase='Primary',
+             school_type='Academy converter', inspectorate='Not applicable', ofsted_listed=True),
+    ])
+
+
+@pytest.fixture()
+def client(monkeypatch):
+    from backend import app as app_module
+    from backend import database as database_module
+
+    def _no_db():
+        raise RuntimeError('no database in this test')
+
+    monkeypatch.setattr(app_module, 'load_latest_school_data', _df)
+    monkeypatch.setattr(app_module, 'load_school_data', _df)
+    monkeypatch.setattr(app_module, 'get_supplementary_data', lambda db, urn: {})
+    monkeypatch.setattr(app_module, '_place_registry', None)
+    monkeypatch.setattr(database_module, 'SessionLocal', _no_db)
+    return TestClient(app_module.app, raise_server_exceptions=False)
+
+
+def test_the_list_carries_inspectorate_and_listing(client):
+    resp = client.get('/api/schools?page_size=50')
+    assert resp.status_code == 200, resp.text
+    by_urn = {s['urn']: s for s in resp.json()['schools']}
+    assert by_urn[136083]['inspectorate'] == 'ISI'
+    assert by_urn[150031]['ofsted_listed'] is True
+
+
+def test_the_school_page_carries_them(client):
+    info = client.get('/api/schools/136083').json()['school_info']
+    assert info['inspectorate'] == 'ISI'
+    assert info['ofsted_listed'] is False
+
+
+def test_compare_carries_them(client):
+    body = client.get('/api/compare?urns=136083,150031').json()
+    assert body['comparison']['150031']['school_info']['ofsted_listed'] is True
+    assert body['comparison']['136083']['school_info']['inspectorate'] == 'ISI'
+
+
+def test_a_mart_built_before_the_columns_still_loads():
+    # Missing columns make the main query retry with NULLs (data_loader).
+    from backend import data_loader
+    assert {'inspectorate', 'ofsted_listed'} <= set(data_loader._EXTRA_OPTIONAL_COLUMNS)
+    fallback = str(data_loader._MAIN_QUERY_NO_EXTRA_COLS)
+    assert 'NULL AS inspectorate,' in fallback and 'NULL AS ofsted_listed,' in fallback