Edition 4 — Retitled for navigation. Voice survived.

Retitled for navigation. Voice survived. Shipped: - All 36 chapter titles rewritten — topical-primary, with question form on 9 chapters where intent shape beats subject shape - Old hype titles preserved as subtitles ("The Day I Killed My Tabs" now sits below "AI as an Operating System") - Cmd-K resolves "cron" → Scheduled Tasks, "browser" → Browser Agents with Playwright, "permissions" → When to…