Hacker News Roundup — Apr 19, 2026: Vercel Breach, Notion Email Leak, Opus 4.7 Cost Rage

Vercel confirms unauthorized internal access; Notion allegedly exposes editor emails on public pages; HN erupts over Claude Opus 4.7 token bloat vs 4.6; plus NIST any-wavelength lasers and Blizzard kills Turtle WoW.

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