Benchmark startup, shutdown, and repeated host lifetime resource stability

[KlausLoeffelmann]

Objective

Measure cold/warm startup, shutdown latency, allocations, retained memory, threads, handles, and repeated build/run/dispose cycles. Compare against a conventional Application.Run baseline and document acceptable overhead, one-time caches, and any leak indicators.

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.