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-KJNodes/web/js/protovisUtil.js

@@ -0,0 +1,25 @@
+/**
+ * Utility functions for protovis in ComfyUI.
+ */
+
+/**
+ * Get correct local coordinates for protovis in transformed containers.
+ * Uses getBoundingClientRect() which properly accounts for CSS transforms.
+ *
+ * This fixes coordinate calculation issues when protovis widgets are rendered
+ * inside ComfyUI's vueNodes mode, which uses CSS transforms for panning/zooming.
+ *
+ * @param {pv.Mark} mark - The protovis mark instance
+ * @returns {{x: number, y: number}} Local coordinates relative to the canvas
+ */
+export function getLocalMouse(mark) {
+  const e = pv.event
+  if (!e) return { x: 0, y: 0 }
+  const canvas = mark.root.canvas()
+  if (!canvas) return { x: 0, y: 0 }
+  const rect = canvas.getBoundingClientRect()
+  return {
+    x: e.clientX - rect.left,
+    y: e.clientY - rect.top
+  }
+}