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/models.py

@@ -171,6 +171,10 @@ class OfstedInspection(Base):
     inspection_date = Column(Date)
     publication_date = Column(Date)
     inspection_type = Column(String(100))   # Section 5 / Section 8 etc.
+    # Which inspection framework was used: 'OEIF' or 'ReportCard'
+    framework = Column(String(20))
+
+    # --- OEIF grades (old framework, pre-Nov 2025) ---
     # 1=Outstanding 2=Good 3=Requires improvement 4=Inadequate
     overall_effectiveness = Column(Integer)
     quality_of_education = Column(Integer)
@@ -180,8 +184,20 @@ class OfstedInspection(Base):
     early_years_provision = Column(Integer)   # nullable — not all schools
     previous_overall = Column(Integer)        # for trend display
 
+    # --- Report Card grades (new framework, from Nov 2025) ---
+    # 1=Exceptional 2=Strong 3=Expected standard 4=Needs attention 5=Urgent improvement
+    rc_safeguarding_met = Column(Boolean)          # True=Met, False=Not met
+    rc_inclusion = Column(Integer)
+    rc_curriculum_teaching = Column(Integer)
+    rc_achievement = Column(Integer)
+    rc_attendance_behaviour = Column(Integer)
+    rc_personal_development = Column(Integer)
+    rc_leadership_governance = Column(Integer)
+    rc_early_years = Column(Integer)               # nullable — not all schools
+    rc_sixth_form = Column(Integer)                # nullable — secondary only
+
     def __repr__(self):
-        return f"<OfstedInspection(urn={self.urn}, overall={self.overall_effectiveness})>"
+        return f"<OfstedInspection(urn={self.urn}, framework={self.framework}, overall={self.overall_effectiveness})>"
 
 
 class OfstedParentView(Base):