% --- Document-generation pipeline: single source, many formats ---
\begin{figure}[htbp]
\centering
\begin{tikzpicture}[vqfont]

\node[vqteal, text width=2.7cm, minimum height=1.7cm] (md) at (0,0)
  {\textbf{Markdown report}\\[1pt]\vqsmall streamed text\\$+$ figure refs};

\node[vqred,    text width=4.3cm] (pdf)   at (8.2, 3.0)
  {\textbf{PDF}\\\vqsmall protect--parse--restore math $\to$ headless browser $\to$ \textit{wait for render}};
\node[vqpurple, text width=4.3cm] (slides) at (8.2, 1.0)
  {\textbf{Beamer slides}\\\vqsmall 2nd model call restructures $\to$ branded preamble $\to$ two \LaTeX{} passes};
\node[vqblue,   text width=4.3cm] (docx)  at (8.2,-0.7)
  {\textbf{DOCX}\\\vqsmall document converter preserves tables / structure};
\node[vqgreen,  text width=4.3cm] (xlsx)  at (8.2,-2.3)
  {\textbf{XLSX}\\\vqsmall sandbox \texttt{save\_excel} $\to$ \textit{live} formulas, conditional formats};
\node[vqorange, text width=4.3cm] (share) at (8.2,-3.9)
  {\textbf{Share URL}\\\vqsmall store content $+$ figures $\to$ public viewer};

\draw[vqflow] (md.east) to[out=35,in=180]  (pdf.west);
\draw[vqflow] (md.east) to[out=18,in=180]  (slides.west);
\draw[vqflow] (md.east) to[out=0,in=180]   (docx.west);
\draw[vqflow] (md.east) to[out=-18,in=180] (xlsx.west);
\draw[vqflow] (md.east) to[out=-32,in=180] (share.west);

\end{tikzpicture}
\caption{\textbf{The unified document pipeline.} A single Markdown artifact is rendered into four
document formats and a shareable view, each by a distinct mechanism. The PDF path protects
mathematics from the Markdown parser with placeholder tokens, renders in a real browser engine,
and waits for the math to appear before capture. The slide path issues a \emph{second} model call
that restructures the report into slide bodies, then compiles a branded Beamer document in two
\LaTeX{} passes. Word uses a document converter; spreadsheets carry live formulas written from the
sandbox; and any report can be published to a stable URL. One source, many auditable deliverables.}
\label{fig:docpipeline}
\end{figure}