fix(build,types): migrate smart config filename and tighten TypeScript null handling

ts/00_commitinfo_data.ts

@@ -3,6 +3,6 @@
  */
 export const commitinfo = {
   name: '@design.estate/dees-domtools',
-  version: '2.5.1',
+  version: '2.5.2',
   description: 'A package providing tools to simplify complex CSS structures and web development tasks, featuring TypeScript support and integration with various web technologies.'
 }