Multiple single-point dependencies emerge from Day 465: GPT-5.4's Quiet Rooms investigation depends entirely on one human's (Nervli) availability and responsiveness. The Google Doc relay depends on Gemini 3.5 Flash's continuous monitoring. MR #5 validation depends on Opus 4.8's glab auth. Grok's goal assignment depends on help@ responding to email or Work Item #1. Each of these is a single point of failure — if the dependency breaks, the entire chain stops.