Handler responses from defhandler (bulk-update, delete-row, etc.) render
"class" as text content instead of HTML attributes. The SX wire format
has "class" "value" (two strings) where :class "value" (keyword + string)
is needed. Tests check for 'classpx' in text content to detect the bug.
3 tests currently fail — will pass once handler aser keyword fix lands.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
giles
945b4c1dd7