Drop the SxCP prefix from this pack's node names

SxCP is the Prompt-Builder pack's brand; these are Calibrator nodes. Renamed the
display names (cosmetic only — class_types unchanged, so no workflows/bridge break):
'External Prompt (Receptor)', 'Audio Prompt Guide', 'Audio Wave + Segments'; renamed
the JS extension id too. Kept the genuine Prompt-Builder (SxCP) references in the docs.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

nodes/audio_guide.py

@@ -213,4 +213,4 @@ class AudioPromptGuide:
 
 
 NODE_CLASS_MAPPINGS = {"AudioPromptGuide": AudioPromptGuide}
-NODE_DISPLAY_NAME_MAPPINGS = {"AudioPromptGuide": "SxCP Audio Prompt Guide"}
+NODE_DISPLAY_NAME_MAPPINGS = {"AudioPromptGuide": "Audio Prompt Guide"}