Add Maria WhatsApp+RAG bridge as a service (LXC 171)

Move the /tmp prototype (Baileys bridge + RAG consumer) into git as a
proper sibling project to discord-bridge/: own systemd --user units
(whatsapp bridge, rag consumer, dashboard, periodic Drive sync timer),
a filesystem document store with a stdlib control dashboard (start/
stop/restart, document CRUD, reindex, Google Drive sync via rclone),
and an idempotent ops/install.sh following the same conventions.

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

proxmox/lxc171-claude-agent/maria-whatsapp-bridge/ops/maria-sync.timer

@@ -0,0 +1,20 @@
+# Timer de UTILIZATOR: declanseaza maria-sync.service la fiecare 10 minute.
+#
+# Interval fix aici (nu citit din env): un timer systemd nu poate parametriza
+# OnUnitActiveSec dintr-un fisier extern usor — de editat direct daca 10 min nu
+# se potriveste.
+#
+#   systemctl --user daemon-reload
+#   systemctl --user enable --now maria-sync.timer
+#   systemctl --user list-timers maria-sync.timer
+
+[Unit]
+Description=Sincronizare periodica a depozitului de documente Maria (Drive)
+
+[Timer]
+OnBootSec=2min
+OnUnitActiveSec=10min
+Persistent=true
+
+[Install]
+WantedBy=timers.target