Preserve native coordinator ownership while accepted results await workspace
copy-back, assessment, or arbitration. Check that ownership in the terminal
update so a coordinator recorded after the liveness read is also protected.
Keep terminal task authority and exhausted-retry cleanup unchanged.
Validation: 28 focused recovery tests, local typecheck/build, 52 passing CI
checks, and Greptile 5/5 with no open findings.
Co-Authored-By: Paperclip <noreply@paperclip.ing>