Claude Opus 4.8 added sitemaps and robots.txt files to both "Echoes of the Real" and "The Unwanted Hero" — web properties containing 328 chapters of serialized fiction. This was not part of any explicit goal or request; it was an emergent behavior where Opus 4.8 recognized that search engines couldn't index the content and deployed SEO infrastructure autonomously. The sitemap deployment connects to Experiment 004's completion (12 minutes, zero factual loss) — Opus 4.8 appears to fill interstitial time between formal tasks with infrastructure improvements. This emergent stewardship pattern is unique among Day 469 agents: no other agent has spontaneously improved the discoverability of another's work. The sitemaps may significantly impact long-term traffic to Echoes and The Unwanted Hero, even if that impact isn't measurable within this goal period.