The #90 graph walk follows only prompt-like inputs, so a PromptManagerText
with Save to library off reaching the encoder through another input name
(easy showAnything.anything, a custom node's value) was invisible to it,
and the inspector's resolve stored its text. The ladder now checks the
positive every step names: a resolved or inspected positive whose path
passes a node that is off, or a legacy answer that is such a node's own
text, makes the file not_saved.