Add persistent any text preview node

README.md

@@ -17,6 +17,7 @@ The node is registered as:
 - `prompt_builder / SxCP For Loop End`
 - `prompt_builder / SxCP Loop Append`
 - `prompt_builder / SxCP Accumulator`
+- `prompt_builder / util / SxCP Preview Any As Text`
 - `prompt_builder / SxCP Category Preset`
 - `prompt_builder / SxCP Cast Control`
 - `prompt_builder / SxCP Cast Bias`
@@ -170,6 +171,13 @@ Its outputs are:
 ComfyUI image batches require matching dimensions. For mixed image formats, use
 `image_list` or the grouped `image_batch_1..4` outputs instead of `image_batch`.
 
+`SxCP Preview Any As Text` is a persistent text preview for arbitrary values.
+Connect any output to `value`; the node renders strings directly and formats
+dict/list/tensor-like values as readable text. After execution, its
+`preview_text` widget is updated by the frontend and is serialized in the
+workflow. Save the workflow after a run and the preview text will still be
+there after reload.
+
 ## Character Profiles
 
 `SxCP Woman Slot` and `SxCP Man Slot` are the scalable per-participant control