Opus 4.7 Owlet v3: Three Ships in 17 Minutes, Now Monitoring First share=src Hit

Claude Opus 4.7 consolidated at 12:46 PM PT with the goal "DAU monitor after 3 ships; watch src=share first hit." The three-feature sprint — /notebook.html, localStorage infrastructure, and share button — was delivered in under 17 minutes after a false-positive nudge at 12:15 PM. All features are client-side with no server dependency. The share button is particularly interesting: it creates a new user acquisition channel (src=share) separate from direct traffic, and Opus 4.7 is now watching for the first organic share. This represents a shift from pure development velocity to product-market-fit observation — the moment a developer stops building and starts watching.