add go bench client

backend/migrations/015_add_utilisation.sql

@@ -0,0 +1,8 @@
+-- Migration 015: Add utilisation field
+-- This field stores the host/device where the peripheral is used
+-- Can be a reference to a host in host.yaml or "non-utilisé"
+
+ALTER TABLE peripherals ADD COLUMN utilisation VARCHAR(255);
+
+-- Add index for faster lookups
+CREATE INDEX idx_peripherals_utilisation ON peripherals(utilisation);