Desktop (Wails):
- MarkdownRenderer annotates .katex/.katex-display/.katex-html with
data-latex-source attribute from rehype-katex MathML annotation
- messageSelectionCopy handler reads data-latex-source and replaces
KaTeX rendered text with the original $...$ / ... LaTeX markup
- Auto-locks to the full formula when any part is selected
- Collects all display blocks in the range for multi-row formulas
CLI (TUI):
- mathNode retains both value (Unicode display) and source (raw LaTeX)
- mdRenderer gains rawMath mode and RenderRaw() method
- renderAssistantMarkdownRaw builds a parallel transcript with
raw LaTeX preserving $...$ delimiters
- selectedText() uses rawWrappedLines when available to restore
original LaTeX on clipboard copy
Fixes: Ctrl+C copy of LaTeX math expressions in both desktop and CLI
Model answers routinely contain $...$ and $$...$$ (also \(..\), \[..\])
math that previously printed as raw backslash commands. A goldmark inline
parser now converts it to a terminal-readable Unicode approximation —
Greek, operators/relations, super/subscripts, \frac, \sqrt, accents — so
the markdown pipeline renders it inline without breaking the streaming
flush boundary or width counting. A currency guard keeps "$5 and $10"
prose, and code spans/fences pass through untouched.
Co-authored-by: reasonix <[email protected]>
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