feat: Add device user labels to notifications #48
Description
Summary
Include optional user-provided device labels in notification payloads to make notifications easier to identify in large deployments.
Why
Currently notifications only include device WWN/serial which can be hard to identify. User-defined labels would provide better context.
File
webapp/backend/pkg/notify/notify.go (line 129)
Acceptance Criteria
- DeviceLabel field added to notification payload
- Label propagated from Device model
- Backwards compatible (empty label doesn't break notifications)
- Documentation updated