LaTeX Compile + QA

Compile the LaTeX project and produce a PDF (when the toolchain is available), plus a short build report.

This step is deterministic; if compilation fails, record actionable diagnostics rather than guessing.

Inputs

• latex/main.tex
• citations/ref.bib

Outputs

• latex/main.pdf (if compilation succeeds)
• output/LATEX_BUILD_REPORT.md (recommended)

Workflow

1. Run a LaTeX build (e.g., latexmk) if available.