ae9bfafb1f
ctask resume <archived-workspace> printed both the helpful [ctask] diagnostic + restore hint AND a redundant trailing "Error: workspace archived" line from Cobra's default error rendering. Cosmetic but unprofessional. Add an errArchivedWorkspace sentinel and have runResume flip SilenceErrors only when the inner error is that sentinel. All other resume errors (lookup failure, metadata write failure, etc.) continue to flow through Cobra's default rendering unchanged — we only silence the case where we have already printed an equivalent diagnostic ourselves. Verified end-to-end through Cobra Execute (not just runResume direct invocation) so the SilenceErrors-flip-from-RunE timing is exercised.