feat(M14): add deployment artifacts and secret check

Co-authored-by: Codex/gpt-5.6-terra <codex-gpt-5.6-terra@agents.invalid>

deploy/logrotate/pronote_sync

@@ -0,0 +1,9 @@
+/var/log/pronote-sync/pronote-sync.log {
+    daily
+    missingok
+    rotate 7
+    compress
+    delaycompress
+    notifempty
+    create 0640 pronote-sync pronote-sync
+}

deploy/systemd/pronote-sync.service

@@ -0,0 +1,23 @@
+[Unit]
+Description=Synchronisation Pronote vers CalDAV et XMPP
+Wants=network-online.target
+After=network-online.target
+
+[Service]
+Type=oneshot
+User=pronote-sync
+Group=pronote-sync
+WorkingDirectory=/var/lib/pronote-sync
+EnvironmentFile=/etc/pronote-sync/pronote-sync.env
+Environment=PYTHONUNBUFFERED=1
+StateDirectory=pronote-sync
+LogsDirectory=pronote-sync
+ExecStartPre=/opt/pronote-sync/.venv/bin/python /opt/pronote-sync/scripts/check_secrets.py
+ExecStart=/opt/pronote-sync/.venv/bin/pronote-sync
+StandardOutput=append:/var/log/pronote-sync/pronote-sync.log
+StandardError=append:/var/log/pronote-sync/pronote-sync.log
+NoNewPrivileges=true
+PrivateTmp=true
+ProtectHome=true
+ProtectSystem=strict
+ReadWritePaths=/var/lib/pronote-sync /var/log/pronote-sync

deploy/systemd/pronote-sync.timer

@@ -0,0 +1,10 @@
+[Unit]
+Description=Exécution quotidienne de pronote-sync
+
+[Timer]
+OnCalendar=*-*-* 18:00:00
+Persistent=true
+Unit=pronote-sync.service
+
+[Install]
+WantedBy=timers.target