Review findings: an unreadable text link counts as built from a candidate
only through that node's first output, so a LoRA loader's trigger-word output
is unknown, not its text. A node with a seed input holds a template, never the
prompt that ran. A sampler-less graph the rule cannot decide still links the
A1111 positive a metadata saver wrote beside it, as the old scan did. Only
plain numbers are numeric; words such as nan or inf are prompts.