Improve the frontend and repository layer

services/pos/app/api/configurations.py

@@ -13,6 +13,8 @@ from shared.auth.decorators import get_current_user_dep
 from shared.auth.access_control import require_user_role, admin_role_required
 from shared.routing import RouteBuilder
 from shared.security import create_audit_logger, AuditSeverity, AuditAction
+from app.services.pos_config_service import POSConfigurationService
+from app.schemas.pos_config import POSConfigurationListResponse
 
 router = APIRouter()
 logger = structlog.get_logger()
@@ -22,23 +24,41 @@ route_builder = RouteBuilder('pos')
 
 @router.get(
     route_builder.build_base_route("configurations"),
-    response_model=dict
+    response_model=POSConfigurationListResponse
 )
 @require_user_role(['viewer', 'member', 'admin', 'owner'])
 async def list_pos_configurations(
     tenant_id: UUID = Path(...),
     pos_system: Optional[str] = Query(None),
     is_active: Optional[bool] = Query(None),
+    skip: int = Query(0, ge=0),
+    limit: int = Query(100, ge=1, le=100),
     current_user: dict = Depends(get_current_user_dep),
     db=Depends(get_db)
 ):
     """List all POS configurations for a tenant"""
     try:
-        return {
-            "configurations": [],
-            "total": 0,
-            "supported_systems": ["square", "toast", "lightspeed"]
-        }
+        service = POSConfigurationService()
+        
+        configurations = await service.get_configurations_by_tenant(
+            tenant_id=tenant_id,
+            pos_system=pos_system,
+            is_active=is_active,
+            skip=skip,
+            limit=limit
+        )
+        
+        total = await service.count_configurations_by_tenant(
+            tenant_id=tenant_id,
+            pos_system=pos_system,
+            is_active=is_active
+        )
+        
+        return POSConfigurationListResponse(
+            configurations=configurations,
+            total=total,
+            supported_systems=["square", "toast", "lightspeed"]
+        )
     except Exception as e:
         logger.error("Failed to list POS configurations", error=str(e), tenant_id=tenant_id)
         raise HTTPException(status_code=500, detail=f"Failed to list configurations: {str(e)}")