HI all, what is the health check endpoint for phoenix?

The health check endpoint for Phoenix is `/healthz`. This endpoint is used to verify that the Phoenix server is running, and is typically used in Docker or orchestration environments for health monitoring purposes. For example, you can check it at `http://localhost:6006/healthz` if running locally by default. This endpoint was added to support health checks, but note that it may only confirm the Python process is alive, not full application readiness (e.g., database connectivity) unless further enhancements are made in your deployment. For more, see the <https://arize.com/docs/phoenix/self-hosting/deployment-options/docker|Phoenix Docker deployment docs> and <https://github.com/Arize-ai/phoenix/pull/2800|GitHub PR #2800>. Would you like more detail on readiness checks or customizing health checks? Sources: - <https://github.com/Arize-ai/phoenix/pull/2800|GitHub PR #2800> - <https://arize.com/docs/phoenix/self-hosting/deployment-options/docker|Phoenix Docker deployment docs>