feat: migrate Outline + n8n to main server, rename S3 buckets to walava-*
- Add Outline, outline-db, outline-redis, n8n, outline-mcp containers to main docker-compose
- Add env.outline.j2 template with Resend SMTP and S3 (walava-outline bucket)
- Update Traefik routes: wiki → outline:3000, auto → n8n:5678 (local, not cross-server)
- Rename S3 buckets: visual-backup → walava-backup, visual-outline → walava-outline
- Extend backup.sh.j2: add Outline DB, n8n, Plane MinIO to backup scope
- Add outline_image, n8n_image, outline_mcp_image to services/defaults
- Remove Authelia config deployment tasks from configs.yml
- Add outline-internal and n8n-internal networks to docker-compose
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>