restructure: move backend into backend/

backend/app/routers/radgroupreply.py

@@ -0,0 +1,17 @@
+"""radgroupreply — raw group reply attributes (all attributes, not just VLAN).
+
+The VLAN-specific abstraction lives in ``routers/vlan.py`` (``/vlan``); this router
+stays as generic CRUD over the raw table for any other reply attributes.
+"""
+from ..models import RadGroupReply
+from ..schemas import GroupAttrCreate, GroupAttrOut, GroupAttrUpdate
+from ._attr_factory import build_group_attr_router
+
+router = build_group_attr_router(
+    model=RadGroupReply,
+    prefix="/radgroupreply",
+    tag="radgroupreply",
+    out_schema=GroupAttrOut,
+    create_schema=GroupAttrCreate,
+    update_schema=GroupAttrUpdate,
+)