refactor: expand RWM to "Reading, Writing & Maths" in user-facing text

Expand the abbreviation in metric names (backend schemas), the home page
sort dropdown, README/QA docs, and pipeline comments. Short_name fields
and the compact row/map-card labels remain abbreviated for space.

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

pipeline/plugins/extractors/tap-uk-ees/tap_uk_ees/tap.py

@@ -484,12 +484,12 @@ _LEGACY_KS2_COLUMN_MAP = {
     "PTREAD_AT": "reading_absence_pct",
     "PTMAT_AT": "maths_absence_pct",
     "PTGPS_AT": "gps_absence_pct",
-    # Gender breakdown for RWM
+    # Gender breakdown for Reading, Writing & Maths
     "PTRWM_EXP_B": "rwm_expected_boys_pct",
     "PTRWM_HIGH_B": "rwm_high_boys_pct",
     "PTRWM_EXP_G": "rwm_expected_girls_pct",
     "PTRWM_HIGH_G": "rwm_high_girls_pct",
-    # Disadvantaged breakdown for RWM
+    # Disadvantaged breakdown for Reading, Writing & Maths
     "PTRWM_EXP_FSM6CLA1A": "rwm_expected_disadvantaged_pct",
     "PTRWM_EXP_NotFSM6CLA1A": "rwm_expected_non_disadvantaged_pct",
     "DIFFN_RWM_EXP": "disadvantaged_gap",

pipeline/transform/models/staging/stg_ees_ks2.sql

@@ -18,7 +18,7 @@ pivoted as (
         cast(trim(school_urn) as integer) as urn,
         cast(trim(time_period) as integer) as year,
 
-        -- RWM combined (All pupils / Total)
+        -- Reading, Writing & Maths combined (All pupils / Total)
         max(case when subject = 'Reading, writing and maths'
                   and breakdown_topic = 'All pupils' and breakdown = 'Total'
             then {{ safe_numeric('expected_standard_pupil_percent') }} end) as rwm_expected_pct,
@@ -96,7 +96,7 @@ pivoted as (
                   and breakdown_topic = 'All pupils' and breakdown = 'Total'
             then {{ safe_numeric('absent_or_not_able_to_access_percent') }} end) as science_absence_pct,
 
-        -- Gender breakdown for RWM
+        -- Gender breakdown for Reading, Writing & Maths
         max(case when subject = 'Reading, writing and maths' and breakdown = 'Boys'
             then {{ safe_numeric('expected_standard_pupil_percent') }} end) as rwm_expected_boys_pct,
         max(case when subject = 'Reading, writing and maths' and breakdown = 'Boys'
@@ -106,7 +106,7 @@ pivoted as (
         max(case when subject = 'Reading, writing and maths' and breakdown = 'Girls'
             then {{ safe_numeric('higher_standard_pupil_percent') }} end) as rwm_high_girls_pct,
 
-        -- Disadvantaged breakdown for RWM
+        -- Disadvantaged breakdown for Reading, Writing & Maths
         max(case when subject = 'Reading, writing and maths' and breakdown = 'Disadvantaged'
             then {{ safe_numeric('expected_standard_pupil_percent') }} end) as rwm_expected_disadvantaged_pct,
         max(case when subject = 'Reading, writing and maths' and breakdown = 'Not disadvantaged'