mapLyrics() used a dedicated rawPairs()/rawTags path solely to bypass the
32KB lyrics truncation cap (the comment claiming sanitization "strips XML"
was inaccurate -- pair-type tags are only truncated, never stripped). That
duplicated every file s tags into a second lowercased map on the scan hot
path.
Instead, raise the lyrics maxLength so the normal Pairs() path keeps large
word-timed TTML/Enhanced-LRC intact, and remove rawTags/rawPairs. The
existing ">32KB embedded TTML" test continues to pass through Pairs().
a42b27cfce