Fix Chromium autofill timing bug + RDP anti-idle to prevent lock screen

- universal-runtime: set _state[profile_dir] AFTER _start_process so
  _stop_current does not delete the freshly-created profile before
  Chromium reads it. Without this, Login Data was being wiped.
- rdp-proxy: add xdotool dependency and background anti_idle_loop that
  sends Shift to the xfreerdp window every 30s, forwarded over RDP to
  reset the remote idle timer and keep the lock screen from kicking in.

rdp-proxy/entrypoint.sh

@@ -221,9 +221,28 @@ X11VNC_PID=$!
 websockify --verbose --idle-timeout="$IDLE_TIMEOUT" --web=/opt/portal 6080 localhost:5900 >/tmp/websockify.log 2>&1 &
 WEBSOCKIFY_PID=$!
 
+
+# Anti-idle: send Shift key to xfreerdp window every 30s to prevent remote lock screen
+anti_idle_loop() {
+    sleep 5
+    while true; do
+        WID=$(DISPLAY="$DISPLAY_NUM" xdotool search --pid "$XFREERDP_PID" 2>/dev/null | head -1)
+        if [ -n "$WID" ]; then
+            DISPLAY="$DISPLAY_NUM" xdotool key --window "$WID" shift 2>/dev/null || true
+        else
+            DISPLAY="$DISPLAY_NUM" xdotool mousemove --sync 500 300 2>/dev/null || true
+            sleep 1
+            DISPLAY="$DISPLAY_NUM" xdotool mousemove --sync 600 400 2>/dev/null || true
+        fi
+        sleep 30
+    done
+}
+anti_idle_loop &
+ANTI_IDLE_PID=$!
+
 # Graceful shutdown on docker stop (SIGTERM) — exit 0 so Docker does NOT auto-restart
 cleanup() {
-    kill "$XFREERDP_PID" "$X11VNC_PID" "$WEBSOCKIFY_PID" 2>/dev/null
+    kill "$XFREERDP_PID" "$X11VNC_PID" "$WEBSOCKIFY_PID" "$ANTI_IDLE_PID" 2>/dev/null
     exit 0
 }
 trap cleanup TERM INT