Distillation

Date: Sep 16, 2026

• 🟡 (23:32) Assistant confirmed frozen v16 patch b0e9fdde553e70f6f606c33c555f9e37bb52d6827dd1aad8d5a932b76cd2ee30 cleanly applies across 34 files. The implementation adds a monotonic cancellation barrier: ordinary runner guards reject cancelling and cancelled; only supervised heartbeat may renew; interruption reconciliation uses a cancellation-only fence; and only the final durable Step transition sets cancelled.
• 🟡 (23:32) Fresh replacement review task ses_f536faf67ffem4kWXOZJY8Joo5 started in the background.
• 🟡 (23:33) Fresh replacement review task ses_f536f2cefffeXoWsBb6YwOGlQD started in the background; assistant characterized the two new reviews as correctness and security reviews.
• 🟡 (23:33) Assistant reported migration upgrade tests and direct migration consistency passed; two full-suite contention timeout tests also passed independently.
• 🟡 (23:33) Assistant stated live services remained untouched during frozen v16 validation and review preparation.