Help me apply arc42 to the material below.
Reader and existing knowledge: [describe]
Task and desired outcome: [describe]
Use these principles: State goals, quality priorities, and constraints before explaining a solution.; Connect context, building blocks, runtime, and deployment views.; Record decisions, risks, and a shared glossary rather than hiding them behind diagrams..
Preserve source facts, identifiers, quantities, conditions, exceptions, and uncertainty.
Separate supplied facts from assumptions. Ask for missing information instead of inventing it.
Explain your representation choices and provide a review checklist. Do not claim formal compliance or correctness from formatting alone.
Material: [paste only information you are permitted to share]