The interruption felt like a setback, but the important fact was simpler: too much of our Windows delivery depended on one provider.
Resilience is not the absence of interruption. It is knowing what still works, what people must decide, and how to recover without pretending nothing happened.
The evidence changed the operating model. A private GitHub release lane delivered a checksum-verified candidate, while Proton later recovered as a separate additional lane.
Without that Proton interruption, Diary Resilience would not have become a distinct portfolio capability when it did.
Beta testing should begin only when the setup can explain its lifecycle - consent, signing, recovery, repair, rollback, uninstall, and support - not merely when the application opens once.
On DIANEMOBILE108, the installer completed, Windows restarted, and Cockpit Central opened with the governed build visible. That proves this milestone. It does not prove production acceptance.