Checkpoint: netboot debug state before model swap

configs/installer-init.sh

@@ -19,6 +19,24 @@ fail() { log "FATAL: $*"; sleep 3600; reboot -f; }
 report() { wget -q -O /dev/null "$HTTP/events/$1" 2>/dev/null; }
 
 log "planck installer starting"
+
+# test mode (kexec): verify kernel+initramfs+network without touching disks
+if grep -q planck_test /proc/cmdline 2>/dev/null; then
+    SERIAL=$(awk '/Serial/ {print $3}' /proc/cpuinfo)
+    HOST=$(awk -v s="$SERIAL" 'tolower($1)==tolower(s) {print $2}' /conf/hostmap)
+    log "TEST MODE on $HOST"
+    report "$HOST-test-start"
+    ifconfig eth0 up
+    udhcpc -i eth0 -n -q -s /etc/udhcpc.script >/dev/null 2>&1 && log "dhcp ok" || log "dhcp FAIL"
+    IP=$(ip -4 -o addr show eth0 | awk '{print $4}' | cut -d/ -f1)
+    log "ip $IP"
+    report "$HOST-test-dhcp-$IP"
+    wget -q -O /tmp/test.bin "$HTTP/planck-http-server.py" && log "http get ok" || log "http FAIL"
+    report "$HOST-test-http"
+    sleep 5
+    poweroff -f
+fi
+
 report "started"
 
 # --- identify this node -------------------------------------------------