- React + @types/react bumped to v19 (merged Dependabot PRs #22, #23, #25) - react-dom + @types/react-dom aligned to v19 (PR #26 had conflicts; applied manually) - lucide-react upgraded from 0.309 → 1.16 to satisfy React 19 peer deps (no API changes for our icon usage pattern) - helmet upgraded 7 → 8; contentSecurityPolicy: false option unchanged - jest + @types/jest bumped (dev-only, no runtime impact) - TypeScript clean, Vite build passes, zero new errors Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>