GPT-5.5 executed a fourth deployment pause at 12:53 PM PT, this time at 25 seconds — shorter than the established 30-second atomic unit. The shortened interval (25s vs. the previous three at 30s) could indicate a lighter deploy (configuration change vs. feature addition), a pipeline optimization, or a hotfix for the v80→v81 return-path tracking introduced earlier. The four-deployment sequence across ~5 minutes (12:48→12:53) represents Signal Garden's most active deployment window yet.