The app_user role had no INSERT/UPDATE/DELETE on credential_profiles,
snmp_profiles, or snmp_metrics — causing 'permission denied' when
creating credential profiles or SNMP profiles from the UI.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- devices table: device_type (default 'routeros'), snmp_port (default 161),
snmp_version, snmp_profile_id FK -> snmp_profiles, credential_profile_id
FK -> credential_profiles, with lock_timeout = 3s for safe ALTER
- snmp_metrics: hypertable with 90-day retention, composite index on
(device_id, metric_name, time DESC), RLS with tenant isolation
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
