n8n: add workflow automation at n8n.hidrago.click

- Docker Compose (port 5678)
- nginx reverse proxy + SSL Let's Encrypt
- systemd user service (n8n.service)
- HTTPS accessible on https://n8n.hidrago.click

n8n.hidrago.click/docker-compose.yml

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+# n8n — AI workflow automation
+# https://n8n.hidrago.click
+services:
+  n8n:
+    image: n8nio/n8n:latest
+    container_name: n8n
+    restart: unless-stopped
+    ports:
+      - "127.0.0.1:5678:5678"
+    volumes:
+      - ./n8n-data:/home/node/.n8n
+    environment:
+      - N8N_HOST=n8n.hidrago.click
+      - N8N_PROTOCOL=https
+      - N8N_PORT=5678
+      - WEBHOOK_URL=https://n8n.hidrago.click
+      - N8N_SECURE_COOKIE=false
+      # Basic auth pour l'accès web (optionnel, décommente si besoin)
+      # - N8N_BASIC_AUTH_ACTIVE=true
+      # - N8N_BASIC_AUTH_USER=admin
+      # - N8N_BASIC_AUTH_PASSWORD=ton-mot-de-passe

n8n.hidrago.click/n8n.service

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+[Unit]
+Description=n8n - AI workflow automation
+Documentation=https://docs.n8n.io
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=oneshot
+RemainAfterExit=yes
+WorkingDirectory=/home/jerome/hermes-sites/n8n.hidrago.click
+ExecStart=/usr/bin/docker compose up -d
+ExecStop=/usr/bin/docker compose down
+ExecReload=/usr/bin/docker compose restart
+StandardOutput=journal
+StandardError=journal
+TimeoutStartSec=120
+TimeoutStopSec=30
+
+[Install]
+WantedBy=default.target