Add pupil absence data to school details modal

Display test absence percentages (reading, maths, GPS, writing, science)
in a new section in the school modal. Requires database re-import.

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

backend/models.py

@@ -96,7 +96,14 @@ class SchoolResult(Base):
     sen_support_pct = Column(Float)
     sen_ehcp_pct = Column(Float)
     stability_pct = Column(Float)
-    
+
+    # Pupil Absence from Tests
+    reading_absence_pct = Column(Float)
+    gps_absence_pct = Column(Float)
+    maths_absence_pct = Column(Float)
+    writing_absence_pct = Column(Float)
+    science_absence_pct = Column(Float)
+
     # Gender Breakdown
     rwm_expected_boys_pct = Column(Float)
     rwm_expected_girls_pct = Column(Float)
@@ -173,6 +180,12 @@ RESULT_FIELD_MAPPING = {
     'sen_support_pct': 'sen_support_pct',
     'sen_ehcp_pct': 'sen_ehcp_pct',
     'stability_pct': 'stability_pct',
+    # Absence
+    'reading_absence_pct': 'reading_absence_pct',
+    'gps_absence_pct': 'gps_absence_pct',
+    'maths_absence_pct': 'maths_absence_pct',
+    'writing_absence_pct': 'writing_absence_pct',
+    'science_absence_pct': 'science_absence_pct',
     # Gender
     'rwm_expected_boys_pct': 'rwm_expected_boys_pct',
     'rwm_expected_girls_pct': 'rwm_expected_girls_pct',