feat(ai): update n8n and paperless model stack

n8n/README.md

@@ -19,17 +19,14 @@ Este stack despliega n8n con:
 2. **Registro DNS**: Configura el registro A para tu dominio n8n
 3. **Clave de cifrado**: Genera una clave segura para cifrar credenciales
 
-### Desde Portainer
+### Desde Docker Compose
 
-1. Ve a **Stacks** → **Add stack**
-2. Nombre: `n8n`
-3. Selecciona **Repository** o **Git repository**
-4. Configura:
-   - Repository URL: `<tu-repositorio>`
-   - Repository reference: `main`
-   - Compose path: `n8n/docker-compose.yml`
-5. Copia `n8n/stack.env` a `n8n/.env` y carga `n8n/.env` como archivo de variables de entorno
-6. Haz clic en **Deploy the stack**
+Asegurate de tener `n8n/.env` configurado y despliega:
+
+```bash
+cd n8n
+docker compose --env-file .env up -d
+```
 
 ### Variables de Entorno Importantes
 
@@ -334,7 +331,7 @@ También puedes exportar workflows manualmente:
    ```env
    N8N_IMAGE=n8nio/n8n:latest
    ```
-3. Actualiza el stack en Portainer
+3. Redespiega con Docker Compose
 4. Verifica los logs: `docker logs n8n`
 5. Prueba algunos workflows críticos
 

n8n/UPGRADE-2.30.5.md

@@ -0,0 +1,92 @@
+# n8n upgrade to 2.30.5
+
+Prepared: 2026-07-15T10:28Z
+
+## Current state
+
+- Current running version before upgrade: `2.22.5`
+- Target version: `2.30.5`
+- Target image pulled locally: `n8nio/n8n:2.30.5`
+- Target image digest: `sha256:450853cd21a2ce36587c4c860eb26927c1ceba9496bf55f4c213b5d3a6dc8c6f`
+- Previous image digest: `sha256:a49bc161141d6c4b9c495b5a6e3c7c1932e61d2ed2fe3fdca01262064b4b23ca`
+
+## Backup
+
+Backup directory:
+
+```bash
+/opt/backups/n8n-upgrade-20260715T102759Z
+```
+
+Contents:
+
+- `n8n-postgres.dump`
+- `n8n-data.tgz`
+- `SHA256SUMS`
+
+Verify backup:
+
+```bash
+sudo sha256sum -c /opt/backups/n8n-upgrade-20260715T102759Z/SHA256SUMS
+sudo cat /opt/backups/n8n-upgrade-20260715T102759Z/n8n-postgres.dump | docker exec -i n8n-pg pg_restore -l | head
+sudo tar -tzf /opt/backups/n8n-upgrade-20260715T102759Z/n8n-data.tgz | head
+```
+
+## Upgrade
+
+```bash
+cd /home/felidae/Portainer_repo/n8n
+docker compose --env-file .env up -d n8n
+```
+
+## Verification
+
+```bash
+docker exec n8n n8n --version
+docker ps --filter name=n8n --format 'table {{.Names}}\t{{.Image}}\t{{.Status}}'
+health-results
+docker logs --since 10m n8n
+```
+
+Expected:
+
+- `docker exec n8n n8n --version` prints `2.30.5`
+- `health-results` reports `11/11 up`
+- No recurring `ERR_ERL_UNEXPECTED_X_FORWARDED_FOR`
+
+## Rollback
+
+If the container fails to start or workflows fail after migration:
+
+1. Stop n8n:
+
+```bash
+docker compose --env-file .env stop n8n
+```
+
+2. Restore the previous image in `docker-compose.yml`:
+
+```yaml
+image: n8nio/n8n@sha256:a49bc161141d6c4b9c495b5a6e3c7c1932e61d2ed2fe3fdca01262064b4b23ca
+```
+
+3. If DB migrations need rollback, restore Postgres from backup. This is destructive to current n8n DB state:
+
+```bash
+docker compose --env-file .env stop n8n
+docker exec -i n8n-pg dropdb -U n8n n8n
+docker exec -i n8n-pg createdb -U n8n n8n
+sudo cat /opt/backups/n8n-upgrade-20260715T102759Z/n8n-postgres.dump | docker exec -i n8n-pg pg_restore -U n8n -d n8n --clean --if-exists
+```
+
+4. Restore `/opt/n8n/data` only if needed:
+
+```bash
+sudo tar -C /opt/n8n -xzf /opt/backups/n8n-upgrade-20260715T102759Z/n8n-data.tgz
+```
+
+5. Start old n8n:
+
+```bash
+docker compose --env-file .env up -d n8n
+```

n8n/docker-compose.yml

@@ -1,7 +1,6 @@
 services:
   n8n:
-    image: n8nio/n8n:latest
-    pull_policy: always
+    image: n8nio/n8n:2.30.5
     container_name: n8n
     restart: unless-stopped
     environment:
@@ -16,6 +15,7 @@ services:
       N8N_PORT: ${N8N_PORT}
       N8N_PROTOCOL: ${N8N_PROTOCOL}
       WEBHOOK_URL: ${N8N_WEBHOOK_URL}
+      N8N_PROXY_HOPS: ${N8N_PROXY_HOPS}
 
       GENERIC_TIMEZONE: ${N8N_TIMEZONE}
       N8N_ENCRYPTION_KEY: ${N8N_ENCRYPTION_KEY}
@@ -59,7 +59,6 @@ services:
 
   n8n-db:
     image: postgres:16
-    pull_policy: always
     container_name: n8n-pg
     restart: unless-stopped
     environment:

n8n/stack.env

@@ -11,6 +11,7 @@ N8N_HOST=
 N8N_PORT=5678
 N8N_PROTOCOL=https
 N8N_WEBHOOK_URL=https://app.example.com
+N8N_PROXY_HOPS=1
 
 N8N_TIMEZONE=Europe/Madrid