The solution was staring me square in the face, I couldn't see the proverbial forest for all the trees I suppose.
Obviously, the parameter that controls this would be generate.toc
, so after modifying my stylesheet to include—
<xsl:param name="generate.toc">
appendix toc
book toc,title
chapter toc
part toc
</xsl:param>
—it all rendered beautifully as one'd expect…