feat: add superfig paper-figure toolkit

Standalone LaTeX/TikZ skill for non-tensor paper figures: node/edge
macros, lint-on-warning build, golden examples, and negative fixtures.

tests/lint-invalid/callout-anchor.tex

@@ -0,0 +1,9 @@
+\documentclass{standalone}
+\usepackage[en]{superfig}
+\sfsetrole{x}{sfTeal}
+\begin{document}\begin{tikzpicture}
+\sfrow{R1}{10mm}
+  \sfnode[role=x]{A}{A}{8mm}{8mm}
+\sfrowend
+\sfcallout{N}{3cm}{A}{aside}{on a node}
+\end{tikzpicture}\end{document}

tests/lint-invalid/callout-duplicate.tex

@@ -0,0 +1,13 @@
+\documentclass{standalone}
+\usepackage[en]{superfig}
+\sfsetrole{x}{sfTeal}
+\begin{document}\begin{tikzpicture}
+\sfrow{R1}{10mm}
+  \sfnode[role=x]{A}{A}{8mm}{8mm}
+\sfrowend
+\sfrow{R2}{10mm}
+  \sfnode[role=x]{B}{B}{8mm}{8mm}
+\sfrowend
+\sfcallout{N1}{3cm}{R1}{one}{first}
+\sfcallout{N2}{3cm}{R2}{two}{second}
+\end{tikzpicture}\end{document}

tests/lint-invalid/formula-order.tex

@@ -0,0 +1,9 @@
+\documentclass{standalone}
+\usepackage[en]{superfig}
+\sfsetrole{x}{sfTeal}
+\begin{document}\begin{tikzpicture}
+\sftopformula{F}{$x$}
+\sfrow{R1}{10mm}
+  \sfnode[role=x]{A}{A}{8mm}{8mm}
+\sfrowend
+\end{tikzpicture}\end{document}

tests/lint-invalid/group-single.tex

@@ -0,0 +1,7 @@
+\documentclass{standalone}
+\usepackage[en]{superfig}
+\sfsetrole{x}{sfTeal}
+\begin{document}\begin{tikzpicture}
+\sfnode[role=x, at={(0,0)}]{A}{A}{8mm}{8mm}
+\sfgroup[role=x]{G}{(A)}{}
+\end{tikzpicture}\end{document}

tests/lint-invalid/hue-budget.tex

@@ -0,0 +1,14 @@
+\documentclass{standalone}
+\usepackage[en]{superfig}
+\sfsetrole{a}{sfTeal}
+\sfsetrole{b}{sfOrange}
+\sfsetrole{c}{sfCoral}
+\sfsetrole{d}{sfViolet}
+\sfsetrole{e}{sfInk}
+\begin{document}\begin{tikzpicture}
+\sfnode[role=a, at={(0,0)}]{A}{A}{8mm}{8mm}
+\sfnode[role=b, at={(12mm,0)}]{B}{B}{8mm}{8mm}
+\sfnode[role=c, at={(24mm,0)}]{C}{C}{8mm}{8mm}
+\sfnode[role=d, at={(36mm,0)}]{D}{D}{8mm}{8mm}
+\sfnode[role=e, at={(48mm,0)}]{E}{E}{8mm}{8mm}
+\end{tikzpicture}\end{document}

tests/lint-invalid/raw-tikz.tex

@@ -0,0 +1,5 @@
+\documentclass{standalone}
+\usepackage[en]{superfig}
+\begin{document}\begin{tikzpicture}
+\draw (0,0) -- (1,0);
+\end{tikzpicture}\end{document}

tests/lint-invalid/role-before.tex

@@ -0,0 +1,5 @@
+\documentclass{standalone}
+\usepackage[en]{superfig}
+\begin{document}\begin{tikzpicture}
+\sfnode[role=ghost, at={(0,0)}]{A}{A}{8mm}{8mm}
+\end{tikzpicture}\end{document}