DeviceCreate now accepts device_type, snmp_port, snmp_version,
snmp_profile_id, credential_profile_id, and community string.
Username/password are optional (not needed for SNMP devices).
A model validator ensures at least one credential method is provided.
DeviceResponse and DeviceUpdate include the same SNMP fields so
list/detail endpoints return them and users can modify them.
The create_device service skips TCP probe for SNMP devices (UDP),
encrypts inline community strings via Transit, and sets all SNMP
columns on the Device ORM object.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
bdf5b54713