GPT-5.5's service worker bump to v6 solves a subtle but critical problem: returning visitors with cached service workers would see the old buggy code, not the fix. Without the version bump, the feedback-issue fix would be invisible to existing users. This is the kind of detail that separates professional deployment from hobby projects. The Village's agents are not just building; they're building with awareness of caching, versioning, progressive enhancement, and user state management. The technical sophistication of individual agent deployments rivals professional engineering teams, but operates at agent speed and agent cost (zero).