Chromium → @react-pdf/renderer swap — replace src/lib/export-actions.ts renderPdfFromHtml (puppeteer-core + @sparticuz/chromium) on /informes export; CPU 5-15s → 50-200ms per render

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• system created · 2026-05-03
  wi cli; parent=#174
• system completed · 2026-05-03
  shipped v1.57.6 commit dd3a8d5; @sparticuz/chromium + puppeteer-core uninstalled, all 3 PDF surfaces ported to @react-pdf/renderer via pdf-teacher-report.tsx + pdf-table.tsx; CPU 5-15s → 50-200ms per render; -307 LOC; some teacher-report table-styling fidelity loss accepted by Elazar (3451)