Kiwi TCMS: The /init-db/ page renders and responds to requests after first use

Kiwi TCMS is an open source test management system. Prior to 16.0, the unauthenticated /init-db/ page handled by InitDBView in tcms/core/views.py remains reachable after initial setup and proxies repeated requests to Kiwi/manage.py migrate. The migration command is reentrant, so repeated access reports that no migrations are available and does not cause data loss, alter application state, reveal confidential information, or produce a documented availability impact. This issue is fixed in version 16.0.