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fix(xsysinfo): make reported system RAM total cgroup/lxcfs-aware (#8059) GetSystemRAMInfo derived Total from memory.TotalMemory(), which on Linux uses syscall.Sysinfo().Totalram - the HOST kernel total. lxcfs/LXD does NOT virtualize that value, while MemAvailable (used for Free/Available) IS virtualized. Inside an LXD/container with a 128Gi host but a ~10Gi container view this produced Total=128Gi, Available=10Gi => Used=118Gi, reporting ~92% RAM usage on an idle container. Derive Total instead from the minimum of all non-zero, non-unlimited candidates: cgroup v2 memory.max, cgroup v1 memory.limit_in_bytes (the kernel unlimited sentinel is ignored), /proc/meminfo MemTotal (which lxcfs virtualizes), and the syscall.Sysinfo total as the bare-metal fallback. On bare metal every candidate is unlimited or equals the host total, so behavior is unchanged. The selection/parsing lives in a pure function chooseTotalMemory(...) taking file CONTENTS, unit-tested without a real LXD host; OS file reads stay in a thin wrapper. Assisted-by: claude:claude-opus-4-8 [Claude Code] Signed-off-by: Ettore Di Giacinto <mudler@localai.io> Co-authored-by: Ettore Di Giacinto <mudler@localai.io>