Fix: Remove versioning helpers

supabase/migrations/20251015181349_54c2065b-f677-4df1-b4ec-946d7bbc4e03.sql

@@ -0,0 +1,27 @@
+-- Archive old JSONB versions table before dropping
+-- This preserves historical data while allowing us to move forward
+
+CREATE TABLE IF NOT EXISTS public.entity_versions_archive (
+  LIKE public.entity_versions INCLUDING ALL
+);
+
+-- Copy all old versions to archive
+INSERT INTO public.entity_versions_archive
+SELECT * FROM public.entity_versions
+ON CONFLICT DO NOTHING;
+
+-- Verify counts match
+DO $$
+DECLARE
+  original_count INTEGER;
+  archive_count INTEGER;
+BEGIN
+  SELECT COUNT(*) INTO original_count FROM public.entity_versions;
+  SELECT COUNT(*) INTO archive_count FROM public.entity_versions_archive;
+  
+  IF original_count != archive_count THEN
+    RAISE EXCEPTION 'Archive verification failed: original=%, archive=%', original_count, archive_count;
+  END IF;
+  
+  RAISE NOTICE 'Successfully archived % versions to entity_versions_archive', archive_count;
+END $$;