fix: script.py guillemets, cron bad minute, system_prompt scripts bash

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

scripts/publish_updates.sh

@@ -0,0 +1,12 @@
+#!/usr/bin/env bash
+
+# Récupération des mises à jour en filtrant l'en‑tête \"Listing...\"
+updates=$(apt list --upgradable 2>/dev/null | grep -v \"^Listing\")
+
+if [ -z \"$updates\" ]; then
+  payload='{\"type\":\"updates\",\"payload\":\"Aucune mise à jour disponible\"}'
+else
+  payload=$(jq -nc --arg p \"$updates\" '{\"type\":\"updates\",\"payload\":$p}')
+fi
+
+mosquitto_pub -h \"${MQTT_BROKER}\" -t \"${MQTT_REPLY_TOPIC}\" -m \"${payload}\"