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

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

backend/data_loader.py

@@ -251,6 +251,8 @@ _MAIN_QUERY = text("""
         s.website,
         s.telephone,
         s.nursery_provision,
+        s.inspectorate,
+        s.ofsted_listed,
         foi.current_grade         AS ofsted_grade,
         foi.current_grade_date    AS ofsted_grade_date,
         foi.latest_visit_date     AS ofsted_date,
@@ -376,7 +378,8 @@ for _old, _new in _LEGACY_NAME_REPLACEMENTS:
 _MAIN_QUERY_LEGACY_NAMES = text(_MAIN_QUERY_LEGACY_NAMES)
 
 # Fallback used when marts predate the optional GIAS/location detail columns
-# (telephone, nursery provision, county, parliamentary constituency) — i.e. the
+# (telephone, nursery provision, county, parliamentary constituency, and the
+# inspectorate / Ofsted-listing columns added for audit H4) — i.e. the
 # nightly dbt pipeline hasn't rebuilt the mart yet on this DB. Keeps each column
 # present as NULL so the whole data load degrades gracefully instead of failing.
 _EXTRA_OPTIONAL_COLUMNS = (
@@ -384,6 +387,8 @@ _EXTRA_OPTIONAL_COLUMNS = (
     "nursery_provision",
     "county",
     "parliamentary_constituency",
+    "inspectorate",
+    "ofsted_listed",
 )
 _MAIN_QUERY_NO_EXTRA_COLS = str(_MAIN_QUERY)
 for _col, _tbl in (
@@ -391,6 +396,8 @@ for _col, _tbl in (
     ("nursery_provision", "s"),
     ("county", "l"),
     ("parliamentary_constituency", "l"),
+    ("inspectorate", "s"),
+    ("ofsted_listed", "s"),
 ):
     _src = f"{_tbl}.{_col},"
     assert _src in _MAIN_QUERY_NO_EXTRA_COLS, (