docs: ORM assessment — verdict: keep raw PDO, no ORM needed

TODO.md

@@ -35,6 +35,12 @@
 
 ---
 
+## Analysis / Reports
+
+- [x] ORM assessment written → `docs/ORM_ASSESSMENT.md`
+
+---
+
 ## NEW FEATURES
 
 ### 1 — License page (public)