Define configuration, settings, logging, and desktop-service boundaries

[KlausLoeffelmann]

Objective

Map the Epic proposal onto existing Microsoft.Extensions.* contracts. Decide what WinForms must own versus reuse, define configuration precedence and environment behavior, and specify user-settings persistence/migration, exception routing, background-service, and health-diagnostic boundaries.

Completion guidance

• Keep the implementation focused on the objective while allowing the assignee to improve the approach based on research.
• Document important decisions, rejected alternatives, dependencies, and follow-up work.
• Add or update tests and documentation appropriate to the work.
• Verify locally and in CI where the task changes code or generated artifacts.