feat(audit): make device names clickable in audit log

Add device_id to the audit log API response and frontend type, then
use DeviceLink to make device hostnames navigable in AuditLogTable.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

frontend/src/lib/api.ts

@@ -835,6 +835,7 @@ export interface AuditLogEntry {
   action: string
   resource_type: string | null
   resource_id: string | null
+  device_id: string | null
   device_name: string | null
   details: Record<string, unknown>
   ip_address: string | null