Render final PDF from LaTeX using server-side or in-browser compiler

[saviobatista]

Business Value
This is the final output the user needs: a tailored, professional PDF résumé ready to submit. Ensuring smooth PDF generation completes the product value loop.

Description
Render the LaTeX .tex file into a downloadable PDF. Start with server-side rendering for simplicity. Later, explore WebAssembly options for client-side export.

Technical Details

• Use tectonic (preferred) or pdflatex in a serverless function
• Implement /lib/latex/renderPdf.ts
• Support local file rendering and return base64 PDF blob
• Handle rendering errors (bad LaTeX, missing packages)
• Consider file size optimization

Acceptance Criteria

• LaTeX is rendered into a PDF successfully
• Output can be downloaded by the user
• PDF quality is visually consistent with the template
• Errors during compilation are handled cleanly