update sync chicken counting realtime mirrored from weight sync, remove panel iot cron

docker/edge_sync_loop.sh

@@ -0,0 +1,8 @@
+#!/bin/sh
+# Sub-minute chicken counting + mortality + weight edge sync.
+set -eu
+cd /app
+while true; do
+  /usr/local/bin/python manage.py sync_chicken_counting_from_edge >> /var/log/cron.log 2>&1 || true
+  sleep 30
+done