chore: drop legacy auth.users fks blocking Logto users

supabase/migrations/20260902134400_drop_legacy_auth_fks.sql

@@ -0,0 +1,14 @@
+DO $$
+DECLARE
+    r RECORD;
+BEGIN
+    FOR r IN (
+        SELECT conrelid::regclass AS table_name, conname AS constraint_name
+        FROM pg_constraint 
+        WHERE confrelid = 'auth.users'::regclass
+        AND conrelid::regclass::text LIKE '"TS_ERP"%'
+    ) LOOP
+        EXECUTE 'ALTER TABLE ' || r.table_name || ' DROP CONSTRAINT IF EXISTS ' || r.constraint_name || ' CASCADE;';
+        RAISE NOTICE 'Dropped constraint % on %', r.constraint_name, r.table_name;
+    END LOOP;
+END $$;