testing update + docs

backend/handlers/scheduling/scheduling_test.go

@@ -1,6 +1,23 @@
 //go:build test
 // +build test
 
+// Package scheduling contains tests for working hours and availability endpoints.
+//
+// Test Coverage:
+//   - GetDefaultHours: GET /api/scheduling/default-hours - Get default weekly hours
+//   - UpdateDefaultHours: PUT /api/scheduling/default-hours - Update default hours (admin)
+//   - ListExceptionalGroups: GET /api/scheduling/exceptional-groups - List holiday hour groups
+//   - CreateExceptionalGroup: POST /api/scheduling/exceptional-groups - Create group (admin)
+//   - DeleteExceptionalGroup: DELETE /api/scheduling/exceptional-groups?id=X - Delete (admin)
+//   - GetWorkingHours: GET /api/scheduling/working-hours?start=X&end=Y - Get hours for date range
+//   - GetAvailableHours: GET /api/scheduling/available-hours?start=X&end=Y - Get available slots
+//   - UpdateExceptionalApplications: PUT /api/scheduling/exceptional-applications - Apply holidays
+//
+// Authentication: Update/Create/Delete endpoints require admin role (403 for non-admins).
+package scheduling
+//go:build test
+// +build test
+
 package scheduling
 
 import (