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controllerHealthy reads RestartCount (running&&rc>0 -> not ok) + signals needsDwell for no-healthcheck; verify requires verifyDwell(=3) consecutive ok polls for a no-healthcheck image (real healthcheck trusted immediately). Closes the F1 hole (alpine crash-loop passed the point-in-time check). Red-proof + dwell + real-image tests. No sudoers/orchestration change. Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Pg8ANF97SEeKYSN5Jxw3qJ