Brummel
14d91035ec
A construction-phase constraint (CompileError::IndistinguishableFanIn, raised in inline_composite) makes a fan-in node whose sources have identical recursive signatures illegal; the definition view then renders each fan-in input as the shortest unique prefix of its source's signature (replacing positional #A/#B); and the sma_cross fixture gains its missing fast/slow aliases. Refs #44 — scope extended from render-only to a construction-phase invariant during design (the positional #A was a symptom of unnamed, indistinguishable fan-in sources, which is the actual fault to forbid).