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-whatsapp.service

@@ -0,0 +1,47 @@
+# Unit systemd de UTILIZATOR pentru puntea WhatsApp (Baileys) a lui Maria.
+#
+# Se instaleaza in ~/.config/systemd/user/maria-whatsapp.service (vezi install.sh).
+#
+#   systemctl --user daemon-reload
+#   systemctl --user enable --now maria-whatsapp
+#   journalctl --user -u maria-whatsapp -f
+
+[Unit]
+Description=Punte WhatsApp (Baileys) pentru Maria (LXC 171 claude-agent)
+Documentation=file:///workspace/romfastsql/proxmox/lxc171-claude-agent/maria-whatsapp-bridge/README.md
+After=network-online.target
+Wants=network-online.target
+
+StartLimitIntervalSec=300
+StartLimitBurst=5
+
+[Service]
+Type=simple
+WorkingDirectory=/workspace/romfastsql/proxmox/lxc171-claude-agent/maria-whatsapp-bridge/whatsapp
+EnvironmentFile=%h/.maria-bridge/env
+Environment=MARIA_BRIDGE_DIR=%h/.maria-bridge
+Environment=NODE_ENV=production
+# nvm — acelasi PATH ca discord-bridge, pe acelasi container.
+Environment=PATH=%h/bin:%h/.nvm/versions/node/v20.19.6/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
+
+ExecStartPre=/bin/mkdir -p %h/.maria-bridge/logs %h/.maria-bridge/whatsapp-auth
+ExecStart=%h/.nvm/versions/node/v20.19.6/bin/node index.js
+
+KillMode=control-group
+KillSignal=SIGTERM
+TimeoutStopSec=15
+
+Restart=on-failure
+RestartSec=5
+RestartSteps=5
+RestartMaxDelaySec=120
+
+MemoryHigh=384M
+MemoryMax=768M
+
+StandardOutput=append:%h/.maria-bridge/logs/whatsapp.log
+StandardError=append:%h/.maria-bridge/logs/whatsapp.log
+SyslogIdentifier=maria-whatsapp
+
+[Install]
+WantedBy=default.target