check-latex-rendering

Use this skill when checking a mathematical proof before reporting PASS.

1. Read the proof files under solver/proof/; do not edit them.
2. Check the LaTeX source for obvious rendering hazards:
   • missing or mismatched math delimiters: \[ / \], \( / \), $...$, and $$...$$;
   • obvious unpaired \left / \right delimiters;
   • mismatched \begin{...} / \end{...} environments;
   • malformed \begin or \end commands;
   • LaTeX math environments left outside math delimiters, for example raw \begin{pmatrix} in prose or inside plain [...] brackets.
3. Ignore LaTeX shown inside Markdown code spans or fenced code blocks.
4. Report LaTeX source review: PASS if no obvious hazard is visible.
5. Report LaTeX source review: FAIL if you find a hazard, with line numbers and snippets so the parent solver can fix the exact formula.