Update requirement files with new feature templates and fix backend API error message, along with mobile project config updates and documentation improvements

01_Requirements/REQ0122/index.md

@@ -1 +1,21 @@
-# DemoBlogPostUi
+---
+tags:
+---
+
+# REQ0122-NotificationSystem
+
+## description
+
+T.B.A.
+
+## schema
+
+```dbml
+{
+  // To be defined
+}
+```
+
+## related
+
+-