RHDH Coding

Patterns for Backstage and RHDH plugin development that agents need but can't reliably get from training data or codebase discovery alone. This covers what you'd learn after six months of getting burned by non-obvious conventions.

Before You Write Code

1. Check for existing specs

Look for a spec, PRD, or OpenSpec design for this work — in docs/plans/**/, specifications/, openspec/changes/*/, or linked from the issue. If found, use the component list and acceptance criteria as your implementation blueprint. Read references/frontend-specs.md for what good frontend specs include.

2. Discover the plugin context

Run the detection script to understand what you're working with: