fix(device-plane): correct gateway receipt immutable trigger

device-plane/services/device-control-core/migrations/012_device_gateway_message_receipts.sql

@@ -61,6 +61,6 @@ create trigger device_gateway_message_receipts_immutable_guard
 before update or delete or truncate
 on device_gateway_message_receipts
 for each statement
-execute function reject_device_immutable_record_mutation();
+execute function device_reject_immutable_mutation();
 
 commit;

device-plane/services/device-control-core/test/gateway-message-migration.test.mjs

@@ -19,6 +19,8 @@ test("gateway receipts persist only typed bounded Core acceptance evidence", asy
   assert.match(sql, /payload_schema_ref text not null/);
   assert.match(sql, /payload jsonb not null/);
   assert.match(sql, /device_gateway_message_receipts_immutable_guard/);
+  assert.match(sql, /execute function device_reject_immutable_mutation\(\)/);
+  assert.doesNotMatch(sql, /execute function reject_device_immutable_record_mutation\(\)/);
   assert.doesNotMatch(sql, /raw_packet|raw_identifier|password|token|secret/i);
   assert.doesNotMatch(sql, /insert\s+into|arusnavi|gelios|\bb2\b|imei/i);
 });