add go bench client

backend/migrations/012_add_pci_device_id.sql

@@ -0,0 +1,5 @@
+-- Migration 012: Add pci_device_id field to peripherals table
+-- Date: 2026-01-05
+-- Description: Add PCI device ID field (vendor:device format, e.g., 10ec:8168)
+
+ALTER TABLE peripherals ADD COLUMN pci_device_id VARCHAR(20);