diff --git a/app/services/__init__.py b/app/services/__init__.py
new file mode 100644
index 0000000..f32a8a2
--- /dev/null
+++ b/app/services/__init__.py
@@ -0,0 +1,8 @@
+"""Service layer for the CRM system.
+
+Submodules are imported directly by routers via
+`from app.services.<name> import <func>` to avoid circular-import issues
+during application startup.
+"""
+
+__all__: list[str] = []