Fix drag-and-drop support for newer ComfyUI frontend

Added compatibility details for drag-and-drop functionality on newer ComfyUI frontend versions, including supported drop actions.

README.md

@@ -1,5 +1,5 @@
 # 🏵️ Fill-Nodes
-
+#Fix image and workflow drag-and-drop on newer ComfyUI frontend#
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@@ -572,5 +572,17 @@ Fill-Nodes is a versatile collection of custom nodes for ComfyUI that extends fu
 | `FL_KartelJobOutput` | POSTs an image batch back to a Kartel callback URL as multipart PNGs with a JSON metadata field (job_id, user_id, user_email, app_name). Skips the POST silently when no callback URL is provided or the input is a 1×1 placeholder. |
 
 </details>
+### Drag and Drop Support
 
+Fill Nodes includes a compatibility fix for drag-and-drop behavior on newer ComfyUI frontend versions.
+
+Supported drop actions:
+
+- Drop an image directly onto a `LoadImage` or `LoadImageMask` node
+- Drop an image onto empty canvas space to create a new `LoadImage` node
+- Drop JSON workflow files onto empty canvas space
+- Drop PNG/WebP/AVIF images with embedded workflow metadata
+- Drop MP4/MOV/M4V files with embedded workflow metadata
+
+The workflow loader also cleans up some stale preview references, such as temporary rgthree comparison images and duplicated media subfolder paths, before loading the graph.
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