feat(deploy+bench+ops): DGX vm scripts, Windows RDP launcher, bench cases, agent_chat enable script

deploy/dgx/vm_launch.sh

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+#!/bin/bash
+# Persistent VM launch — starts swtpm first, waits for socket, then QEMU
+# VNC only, no SPICE (POC configuration)
+VMROOT=/home/aivanov/quickemu-win11-arm-lea
+SWTPM_SOCK="$VMROOT/windows-11-arm-lea.swtpm-sock"
+
+/usr/bin/swtpm socket \
+    --ctrl type=unixio,path="$SWTPM_SOCK" \
+    --terminate \
+    --tpmstate dir="$VMROOT" \
+    --tpm2 &
+
+# Wait for swtpm socket (up to 10s)
+for _i in $(seq 1 100); do
+    if [ -S "$SWTPM_SOCK" ]; then break; fi
+    sleep 0.1
+done
+
+if [ ! -S "$SWTPM_SOCK" ]; then
+    echo "ERROR: swtpm socket not ready after 10s"
+    exit 1
+fi
+
+exec /usr/bin/qemu-system-aarch64 \
+  -name windows-11-arm-lea \
+  -machine virt,highmem=on,pflash0=rom,pflash1=efivars,accel=kvm \
+  -global kvm-pit.lost_tick_policy=discard \
+  -cpu host \
+  -smp cores=8,threads=1,sockets=1 \
+  -m 8G \
+  -device virtio-balloon \
+  -pidfile "$VMROOT/windows-11-arm-lea.pid" \
+  -rtc base=utc,clock=host \
+  -device ramfb \
+  -vga none \
+  -device virtio-gpu-pci,id=video0,xres=1280,yres=800 \
+  -display none \
+  -vnc 127.0.0.1:2,password=on \
+  -device virtio-serial-pci \
+  -chardev socket,id=agent0,path="$VMROOT/windows-11-arm-lea-agent.sock",server=on,wait=off \
+  -device virtserialport,chardev=agent0,name=org.qemu.guest_agent.0 \
+  -device virtio-rng-pci,rng=rng0 \
+  -object rng-random,id=rng0,filename=/dev/urandom \
+  -device qemu-xhci,id=input \
+  -device usb-kbd,bus=input.0 \
+  -k fr \
+  -device usb-tablet,bus=input.0 \
+  -device virtio-net-pci,netdev=nic \
+  -netdev user,hostname=windows-11-arm-lea,hostfwd=tcp::22220-:22,id=nic \
+  -blockdev node-name=rom,driver=file,filename=/usr/share/AAVMF/AAVMF_CODE.no-secboot.fd,read-only=true \
+  -blockdev node-name=efivars,driver=file,filename="$VMROOT/OVMF_VARS.fd" \
+  -device virtio-scsi-pci,id=scsi0 \
+  -device scsi-hd,drive=SystemDisk,bus=scsi0.0,bootindex=2 \
+  -drive id=SystemDisk,if=none,format=qcow2,file="$VMROOT/disk.qcow2",discard=unmap,detect-zeroes=unmap,cache=writeback,aio=threads \
+  -chardev socket,id=chrtpm,path="$SWTPM_SOCK" \
+  -tpmdev emulator,id=tpm0,chardev=chrtpm \
+  -device tpm-tis-device,tpmdev=tpm0 \
+  -monitor unix:"$VMROOT/windows-11-arm-lea-monitor.socket",server,nowait \
+  -serial unix:"$VMROOT/windows-11-arm-lea-serial.socket",server,nowait \
+  2>"$VMROOT/qemu.log"

deploy/dgx/vm_stop.sh

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+#!/bin/bash
+# Persistent VM stop — ACPI poweroff via QEMU monitor, then SIGTERM, then SIGKILL
+# Kill swtpm after QEMU exits. Cleanup PID/sockets.
+
+VMROOT=/home/aivanov/quickemu-win11-arm-lea
+MONITOR_SOCKET="$VMROOT/windows-11-arm-lea-monitor.socket"
+PIDFILE="$VMROOT/windows-11-arm-lea.pid"
+
+# Step 1: Send ACPI poweroff via QEMU monitor
+if [ -S "$MONITOR_SOCKET" ]; then
+    echo "system_powerdown" | socat - UNIX-CONNECT:"$MONITOR_SOCKET" - > /dev/null 2>&1
+    echo "ACPI poweroff sent, waiting 30s..."
+    for i in $(seq 1 30); do
+        if [ ! -f "$PIDFILE" ] || ! ps -p "$(cat "$PIDFILE" 2>/dev/null)" > /dev/null 2>&1; then
+            echo "QEMU exited gracefully"
+            exit 0
+        fi
+        sleep 1
+    done
+fi
+
+# Step 2: SIGTERM (10s more)
+QEMU_PID=$(cat "$PIDFILE" 2>/dev/null)
+if [ -n "$QEMU_PID" ] && ps -p "$QEMU_PID" > /dev/null 2>&1; then
+    echo "Still running, sending SIGTERM..."
+    kill "$QEMU_PID" 2>/dev/null
+    for i in $(seq 1 10); do
+        if ! ps -p "$QEMU_PID" > /dev/null 2>&1; then
+            echo "QEMU exited after SIGTERM"
+            break
+        fi
+        sleep 1
+    done
+fi
+
+# Step 3: SIGKILL
+QEMU_PID=$(cat "$PIDFILE" 2>/dev/null)
+if [ -n "$QEMU_PID" ] && ps -p "$QEMU_PID" > /dev/null 2>&1; then
+    echo "Still running, SIGKILL..."
+    kill -9 "$QEMU_PID" 2>/dev/null
+    sleep 2
+fi
+
+# Step 4: Kill swtpm
+pkill -f "swtpm.*windows-11-arm-lea" 2>/dev/null
+sleep 2
+
+# Step 5: Cleanup
+rm -f "$PIDFILE" "$VMROOT"/*.sock "$VMROOT"/*.socket 2>/dev/null
+echo "VM stop complete"