add go bench client

backend/migrations/013_add_device_id.sql

@@ -0,0 +1,10 @@
+-- Migration 013: Add generic device_id field
+-- This field stores the physical identifier of the device:
+-- - For PCI devices: the slot (e.g., "08:00.0")
+-- - For USB devices: the bus-device (e.g., "001-004")
+-- - For other devices: any relevant identifier
+
+ALTER TABLE peripherals ADD COLUMN device_id VARCHAR(50);
+
+-- Add index for faster lookups
+CREATE INDEX idx_peripherals_device_id ON peripherals(device_id);