Two new nodes: a Concept Slider Card names an attribute (with optional
custom pole sentences) and a Concept Slider Stack derives the
more-vs-less axis from Krea 2's own text encoder at encode time.
-6..+6 dial, up to 8 sliders, a slider report output, and a study
cache; a slider at 0 is skipped entirely and a cardless stack matches
CLIP Text Encode exactly. Ships with the complete guide, the ten-slider
render audit sheets, a showcase workflow with a with-vs-without
comparison branch, contract tests, and a maintainer smoke test.