Rewrite documentHtml to a restrained, print-first GST layout: hairline table
rules, tabular money aligned to the paisa, a single accent driving every
structural color (letterhead rule, title, table-header rule + color-mix tint,
docmeta edge, amount-in-words edge, filled grand-total band).
Add optional template.accent setting (validated hex-or-fallback #334155
slate-indigo) read from the settings map and interpolated only after
validation, so a raw setting string can never be injected into the CSS.
print-color-adjust:exact so the accent tint and grand-total fill survive
puppeteer. DRAFT stays: accent chip in docmeta + optional watermark for
un-issued docs. lineRow/totalsRows untouched; @media screen paper + @page
14mm preserved; renderer stays one pure function so preview===pdf identity holds.
Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Thomas Joise