fix: prevent LaTeX regex from stripping currency dollar signs

postprocess.py

@@ -54,8 +54,9 @@ _LATEX_SUPERSCRIPT = re.compile(r"\$\s*\^?\{([^}]*)\}\s*\$")
 _LATEX_SUBSCRIPT = re.compile(r"\$\s*_\{([^}]*)\}\s*\$")
 # $\pm value$ → ± value
 _LATEX_PLUSMINUS = re.compile(r"\$\s*\\pm\s*([^$]*?)\s*\$")
-# Generic remaining $...$ inline math — strip dollar signs
-_LATEX_INLINE = re.compile(r"\$\s*([^$]{1,60}?)\s*\$")
+# Generic remaining $...$ inline math — only match when content has LaTeX chars
+# (backslash, caret, underscore, braces). Avoids stripping currency like $8,125.00
+_LATEX_INLINE = re.compile(r"\$\s*([^$]{1,60}?[\\^_{}][^$]{0,60}?)\s*\$")
 # LaTeX command remnants: \%, \$, \&, etc.
 _LATEX_ESCAPED_CHARS = re.compile(r"\\([%$&_#])")