* test: focus assertions on behavioral evidence
Prune redundant and wording-coupled checks while retaining diagnostic, parser, recovery, and cleanup coverage.
* refactor: remove test-only wrappers and duplicate checks
Exercise production operations through test fixtures, remove unused adapters, and keep managed-member uncertainty guidance under its existing owner.
* test: focus process validation on diagnostic facts
* refactor: remove test-only runtime helpers
Move semantic evidence fixture setup out of runtime and remove unused Windows settle recovery helpers while checking configured defaults independently.
* test: focus artifact diagnostics on format facts
* test: verify retained cleanup guidance delivery
Allow independently bounded Darwin helper compilation to finish before the five-second Java deadline starts. Keep Linux process-table preparation under command supervision.
Share preparation failure translation between both stages so physical compiler outcomes, exact cancellation reasons and cleanup capabilities retain one owner. Adapt contributor PR #4795 and extend preparation handoff and retry controls.
Fixes#4793
Co-authored-by: J0UH <217747670+J0UH@users.noreply.github.com>
morluto