Allow validated host file and directory mounts outside resource directories
while protecting external paths from deletion.
Clean up cancelled deployment containers and clear tracked process IDs.
Preserve legacy KeyDB and Dragonfly password parsing, accept server backup
paths without extension restrictions, and allow Compose variable proxy ports.
Add audit events for account actions, server and application settings,
services, destinations, storage, backup schedules, and scheduled tasks.
Track changed fields and skip unchanged saves without logging file content.
Add regression coverage for audit events and changed-field detection.