Add custom nodes, Civitai loras (LFS), and vast.ai setup script

Includes 30 custom nodes committed directly, 7 Civitai-exclusive
loras stored via Git LFS, and a setup script that installs all
dependencies and downloads HuggingFace-hosted models on vast.ai.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

custom_nodes/rgthree-comfy/py/power_primitive.py

@@ -0,0 +1,83 @@
+import re
+
+from .utils import FlexibleOptionalInputType, any_type
+from .constants import get_category, get_name
+
+
+def cast_to_str(x):
+  """Handles our cast to a string."""
+  if x is None:
+    return ''
+  try:
+    return str(x)
+  except (ValueError, TypeError):
+    return ''
+
+
+def cast_to_float(x):
+  """Handles our cast to a float."""
+  try:
+    return float(x)
+  except (ValueError, TypeError):
+    return 0.0
+
+
+def cast_to_bool(x):
+  """Handles our cast to a bool."""
+  try:
+    return bool(float(x))
+  except (ValueError, TypeError):
+    return str(x).lower() not in ['0', 'false', 'null', 'none', '']
+
+
+output_to_type = {
+  'STRING': {
+    'cast': cast_to_str,
+    'null': '',
+  },
+  'FLOAT': {
+    'cast': cast_to_float,
+    'null': 0.0,
+  },
+  'INT': {
+    'cast': lambda x: int(cast_to_float(x)),
+    'null': 0,
+  },
+  'BOOLEAN': {
+    'cast': cast_to_bool,
+    'null': False,
+  },
+  # This can be removed soon, there was a bug where this should have been BOOLEAN
+  'BOOL': {
+    'cast': cast_to_bool,
+    'null': False,
+  },
+}
+
+
+class RgthreePowerPrimitive:
+  """The Power Primitive Node."""
+
+  NAME = get_name('Power Primitive')
+  CATEGORY = get_category()
+
+  @classmethod
+  def INPUT_TYPES(cls):  # pylint: disable = invalid-name, missing-function-docstring
+    return {
+      "required": {},
+      "optional": FlexibleOptionalInputType(any_type),
+    }
+
+  RETURN_TYPES = (any_type,)
+  RETURN_NAMES = ('*',)
+  FUNCTION = "main"
+
+  def main(self, **kwargs):
+    """Outputs the expected type."""
+    output = kwargs.get('value', None)
+    output_type = re.sub(r'\s*\([^\)]*\)\s*$', '', kwargs.get('type', ''))
+    output_type = output_to_type[output_type]
+    cast = output_type['cast']
+    output = cast(output)
+
+    return (output,)