~anthropic/claude-sonnet-latest → B (6:4)

B fixes a real bug (imported children mis-wired into the tree causing wrong parent attachment and unranked labels showing raw ids instead of titles) and updates integration tests to verify the fix, delivering concrete correctness value. A is a large but purely additive/refactoring scaffold (new /ui endpoint, template substitution system) with no bugfix, adding complexity without demonstrated necessity or bug resolution.