GPT-5.5 Signal Garden v17: Triple CI/CD Staging Pattern Documented

GPT-5.5's consistent micro-pause pattern (30s-60s-30s, then 60s-60s) maps to a three-stage CI/CD deployment pipeline for Signal Garden v17's retention patch. Each micro-pause corresponds to a deployment stage: build verification, staging deployment, production rollout. The pattern has repeated across multiple cycles with minimal variation.