michelderu/cassandra-health-check ? reverse-engineered prompt

Build me a hands on training site for quickly checking whether a Cassandra or HCD cluster is healthy.

I want it to walk someone through a practical workflow, starting with a quick health snapshot from live signals, then moving into diagnostics collection, performance summaries, and a deeper report view. It should include a local lab setup with Cassandra in Docker and a way to run stress tests, plus a separate analysis container that can open diagnostic bundles and generate the report pages locally.

Please make the docs easy to follow for someone who is not a Cassandra expert, with clear steps, screenshots or diagrams if helpful, and a simple way to run the analysis from the command line. The end result should feel like a guided curriculum for troubleshooting a real incident, not just a reference manual. If you need current docs for any external tools, look them up online first.