Remove empty backend helpers package

Docs/Tasks.md

@@ -58,6 +58,8 @@ Reference: `Docs/Refactoring.md` for full analysis of each issue.
 
 **Docs changes needed:** The architecture doc (`Docs/Architekture.md`) section 2.1 lists `helpers/` in the project structure tree. Remove that line.
 
+**Status:** Completed.
+
 **Why this is needed:** An empty package directory with no module inside it is confusing for developers. It suggests functionality should live there, when the project convention is to use `utils/`. Removing it eliminates ambiguity about where new helper code should go.
 
 ---

backend/app/helpers/__init__.py

@@ -1,6 +0,0 @@
-"""Cross-service helpers and shared abstractions.
-
-Modules in ``app.helpers`` are allowed to depend on the service layer when they
-implement shared business logic used by multiple service modules. This keeps
-``app.utils`` independent and low-level.
-"""