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/comfyui-custom-scripts/web/js/common/utils.js

@@ -0,0 +1,30 @@
+import { $el } from "../../../../scripts/ui.js";
+
+export function addStylesheet(url) {
+	if (url.endsWith(".js")) {
+		url = url.substr(0, url.length - 2) + "css";
+	}
+	$el("link", {
+		parent: document.head,
+		rel: "stylesheet",
+		type: "text/css",
+		href: url.startsWith("http") ? url : getUrl(url),
+	});
+}
+
+export function getUrl(path, baseUrl) {
+	if (baseUrl) {
+		return new URL(path, baseUrl).toString();
+	} else {
+		return new URL("../" + path, import.meta.url).toString();
+	}
+}
+
+export async function loadImage(url) {
+	return new Promise((res, rej) => {
+		const img = new Image();
+		img.onload = res;
+		img.onerror = rej;
+		img.src = url;
+	});
+}