* apply /api prefix consistently, both directly through backend and when accessing via frontend, fixes#236
* docs: update local deployment docs to use 9871 instead of 8000, don't expose 8000 by default
* schemas: don't include /openapi.json as /healthz in documentation, keep /healthz at root
* k8s: route backend to /api without additional rewriting
- add authsign to docker-compose.yml
- add signing.sample.yaml to be copied to signing.yaml for authsign
- add WACZ_SIGN_URL and WACZ_SIGN_TOKEN to config.sample.env
- signing enabled if WACZ_SIGN_URL is set
- add instructions on how to enable signing to Deployment
- update .gitignore, don't commit 'signing.yaml'
- update images to use public repo browsertrix images