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/src_web/scripts_comfy/widgets.ts

@@ -0,0 +1,18 @@
+import type {ComfyApp, IStringWidget, IComboWidget, IWidget, LGraphNode} from "@comfyorg/frontend";
+
+type ComfyWidgetFn<WidgetType extends IWidget> = (
+  node: LGraphNode,
+  inputName: string,
+  inputData: any,
+  app: ComfyApp,
+) => {widget: WidgetType};
+
+/**
+ * A dummy ComfyWidgets that we can import from our code, which we'll rewrite later to the comfyui
+ * hosted widgets.js
+ */
+export declare const ComfyWidgets: {
+  COMBO: ComfyWidgetFn<IComboWidget>;
+  STRING: ComfyWidgetFn<IStringWidget>;
+  [key: string]: ComfyWidgetFn<IWidget>;
+};