Write 21 new Guide entries for all core systems (24 total with the 3 existing), plus the Guide index with preface and 6 sector chapter files (core complete, cardinal stubs in Guide voice). In-universe publication by Adams & Ford Publishing Syndicate. Voice inspired by Douglas Adams — homage, not pastiche. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>