- Added `sanitize_token_from_text` helper to `shared/discord/webhook_client.py`.
- Updated `DiscordWebhookClient._send_with_retry` to sanitize `response.text` before returning it in error details.
- Updated `nodes/image_node.py` and `nodes/video_node.py` to sanitize `response.text` before printing error messages.
- Added regression test `tests/test_webhook_security.py`.
This prevents sensitive Discord webhook tokens from being leaked in ComfyUI console logs when the Discord API returns an error (e.g. 400 Bad Request) that echoes the request URL.
