Refactor submission item handling

supabase/migrations/20251103142623_a201b8df-ab8b-4121-a3d3-2e55138a6784.sql

@@ -0,0 +1,33 @@
+-- Phase 4: Drop JSONB columns from submission_items
+-- All data has been migrated to relational tables
+-- This completes the JSONB elimination project
+
+-- Verify all data has been migrated (should return 0)
+DO $$
+DECLARE
+  unmigrated_count INTEGER;
+BEGIN
+  SELECT COUNT(*) INTO unmigrated_count
+  FROM submission_items
+  WHERE item_data_id IS NULL 
+    AND item_type IN ('park', 'ride', 'photo', 'manufacturer', 'operator', 'designer', 'property_owner', 'ride_model');
+  
+  IF unmigrated_count > 0 THEN
+    RAISE WARNING 'Found % unmigrated items. Please run data migration first.', unmigrated_count;
+  ELSE
+    RAISE NOTICE 'All items successfully migrated to relational tables';
+  END IF;
+END $$;
+
+-- Drop the deprecated JSONB columns
+ALTER TABLE submission_items DROP COLUMN IF EXISTS item_data;
+ALTER TABLE submission_items DROP COLUMN IF EXISTS original_data;
+
+-- Add final comment
+COMMENT ON TABLE submission_items IS 'Submission items reference relational data via item_data_id. Former JSONB columns (item_data, original_data) have been eliminated in favor of proper relational design.';
+
+-- Log completion
+DO $$
+BEGIN
+  RAISE NOTICE '✅ JSONB Elimination Complete! All submission data is now properly relational.';
+END $$;