Defaults matchar servern: intern CODE över HTTPS (ssl.enable=true)

- collaboraUrl -> https://code:9980 överallt (config-node, example-flows,
  .env.example, docker-compose.yml, install.sh, resolve_collabora_url);
  http://code:9980 failar när CODE kör SSL
- verifyTls=false är nu ett krav (self-signed internt) i hjälptext/dok
- integrate: connect_nodered_bridge efter container-up (docker network
  connect bridge, ignorerar already connected) + verifiering via
  docker exec curl -sk https://code:9980/hosting/capabilities (HTTP 200)
- Publik URL förblir https://docs.domain.name i docs

flows/example-flows.json

@@ -11,7 +11,7 @@
         "type": "nc-collab-config",
         "name": "cloud.domain.name",
         "nextcloudUrl": "https://cloud.domain.name",
-        "collaboraUrl": "http://code:9980",
+        "collaboraUrl": "https://code:9980",
         "collaboraPublicUrl": "https://cloud.domain.name",
         "username": "FILL_IN_USER",
         "verifyTls": false