fix: correct heredoc syntax - args before heredoc marker

- Change from `python3 <<HEREDOC - args` to `python3 - args <<HEREDOC`
- Fixes argument passing to Python scripts

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

artifact_comfyui_download.sh

@@ -191,7 +191,7 @@ parse_yaml() {
     local yaml_file="$1"
     local category="$2"
 
-    python3 <<EOPYAML - "$yaml_file" "$category"
+    python3 - "$yaml_file" "$category" <<EOPYAML
 import yaml
 import sys
 
@@ -310,7 +310,7 @@ find_model_files() {
     local repo_id="$1"
     local filename_filter="$2"
 
-    python3 <<EOPYFINDFIND - "$CACHE_DIR" "$repo_id" "$filename_filter"
+    python3 - "$CACHE_DIR" "$repo_id" "$filename_filter" <<EOPYFINDFIND
 import os
 import sys
 from pathlib import Path