Adds a PDF button to the report header. Clicking it opens
/chart/current?print=true in a new tab, which auto-triggers
window.print() so the user can save to PDF via the browser dialog.
- chart submodule bumped: PrintMode support (no filter JS, auto-print,
@media print CSS)
- handlers.go: passes PrintMode=true when ?print=true query param is set
- index.html: PDF button alongside Raw Data / Reanimator
- app.js: printReport() helper; button shown/hidden with other exports
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
Michael Chus
1c4a3b0c09