feat(ofsted): add Report Card system support alongside legacy OEIF grades

Ofsted replaced single overall grades with Report Cards from Nov 2025.
Both systems are retained during the transition period.

- DB: new framework + 9 RC columns on ofsted_inspections (schema v4)
- Integrator: auto-detect OEIF vs Report Card from CSV column headers;
  parse 5-level RC grades and safeguarding met/not-met
- API: expose all new fields in the ofsted response dict
- Frontend: branch on framework='ReportCard' to show safeguarding badge
  + 8-category grid; fall back to legacy OEIF layout otherwise;
  always show inspection date in both layouts
- CSS: rcGrade1–5 and safeguardingMet/NotMet classes

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

backend/data_loader.py

@@ -575,6 +575,10 @@ def get_supplementary_data(db: Session, urn: int) -> dict:
     # Ofsted inspection
     o = safe_query(OfstedInspection, "urn")
     result["ofsted"] = {
+        "framework": o.framework,
+        "inspection_date": o.inspection_date.isoformat() if o.inspection_date else None,
+        "inspection_type": o.inspection_type,
+        # OEIF fields (old framework)
         "overall_effectiveness": o.overall_effectiveness,
         "quality_of_education": o.quality_of_education,
         "behaviour_attitudes": o.behaviour_attitudes,
@@ -582,8 +586,16 @@ def get_supplementary_data(db: Session, urn: int) -> dict:
         "leadership_management": o.leadership_management,
         "early_years_provision": o.early_years_provision,
         "previous_overall": o.previous_overall,
-        "inspection_date": o.inspection_date.isoformat() if o.inspection_date else None,
-        "inspection_type": o.inspection_type,
+        # Report Card fields (new framework, from Nov 2025)
+        "rc_safeguarding_met": o.rc_safeguarding_met,
+        "rc_inclusion": o.rc_inclusion,
+        "rc_curriculum_teaching": o.rc_curriculum_teaching,
+        "rc_achievement": o.rc_achievement,
+        "rc_attendance_behaviour": o.rc_attendance_behaviour,
+        "rc_personal_development": o.rc_personal_development,
+        "rc_leadership_governance": o.rc_leadership_governance,
+        "rc_early_years": o.rc_early_years,
+        "rc_sixth_form": o.rc_sixth_form,
     } if o else None
 
     # Parent View