Description of problem:

Developer confusion about the RHDH plugin development model: Why Backstage is needed, which versions/dependencies to use, and why local development does not guarantee deployment success.

Prerequisites (if any, like setup, operators/versions):

RHDH 1.7.1, developing a custom plugin locally against Backstage.

Steps to Reproduce

1. Develop a plugin locally with Backstage using standard/latest dependencies (e.g., MUI X Charts).
2. Export, package, and deploy the plugin to RHDH.

Actual results:

The plugin worked locally with Backstage but failed when deployed to RHDH due to a dependency mismatch (e.g., required downgrading MUI X Charts).

Expected results:

Documentation should clearly explain the relationship between RHDH and Backstage development, how to manage dependencies, and what versions to target to avoid post-deployment failures.

Reproducibility (Always/Intermittent/Only Once):

Intermittent (dependency-dependent).

Build Details:

Additional info (Such as Logs, Screenshots, etc):

Developer questions to address: Why do we use Backstage? What versions should we use?

https://docs.google.com/document/d/1CiuWpdpn-6ckr-pwLEW4ovPHD1iejBOJfDSdnpqngNg/edit?tab=t.0