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- machines : updateMachine (PATCH /machines/:id) + POST /machines/:id/probe (sonde synchrone → faits + proposition de correction) ; MachineView expose machineKind/virtualization ; CreateMachineInput accepte aptProxyMode persistent - app_settings (clé/valeur, migration 0006) + service appSettings : défaut apt-cacher-ng (mode + url) ; applyProxyToAllMachines - routes /settings : GET, PUT /apt-proxy, POST /apt-proxy/apply-all Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>