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

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

backend/app.py

@@ -1048,6 +1048,11 @@ async def get_school_details(request: Request, urn: int):
             "age_range": latest.get("age_range", ""),
             "has_sixth_form": latest.get("has_sixth_form"),
             "nursery_provision": latest.get("nursery_provision"),
+            # What the Ofsted badge may say when there is no inspection record
+            # (audit H4): the inspectorate GIAS names, and whether Ofsted's own
+            # data lists the school at all.
+            "inspectorate": latest.get("inspectorate"),
+            "ofsted_listed": latest.get("ofsted_listed"),
             # The header's Selective flag reads it (lib/schoolFacts).
             "admissions_policy": latest.get("admissions_policy"),
             "status": latest.get("status"),
@@ -1210,6 +1215,9 @@ async def compare_schools(
                     # schools get entrance-test framing, never the distance template.
                     "admissions_policy": convert_to_native(latest.get("admissions_policy")),
                     "has_sixth_form": convert_to_native(latest.get("has_sixth_form")),
+                    # Audit H4: what compare may say when there is no inspection record.
+                    "inspectorate": convert_to_native(latest.get("inspectorate")),
+                    "ofsted_listed": convert_to_native(latest.get("ofsted_listed")),
                     "capacity": convert_to_native(latest.get("capacity")),
                     "gias_total_pupils": convert_to_native(latest.get("gias_total_pupils")),
                     "trust_name": convert_to_native(latest.get("trust_name")),