Control characters now go on the raw value in AttrWriter::cleanNode and
VariableRef::setting; after the sanitizer only rejection remains ('<' + VT/FF
no longer turns into a tag). VALUE_KEY anchored with D, exact column-width
fractions, nested rows in columns, specialty columns refused, fullwidth by
catalog category, preset ambiguity in DesignSystem::modulePresetId().
Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01At3V6SjwbMe6eMzVGW3Hs7