fix: also fix find_model_files to use sys.argv

- Apply same sys.argv pattern to find_model_files function
- Ensures all Python heredocs avoid bash interpolation issues

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

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

artifact_comfyui_download.sh

@@ -310,14 +310,14 @@ find_model_files() {
     local repo_id="$1"
     local filename_filter="$2"
 
-    python3 - <<EOPYFINDFIND
+    python3 <<EOPYFINDFIND - "$CACHE_DIR" "$repo_id" "$filename_filter"
 import os
 import sys
 from pathlib import Path
 
-cache_dir = '${CACHE_DIR}'
-repo_id = '${repo_id}'
-filename_filter = '${filename_filter}'
+cache_dir = sys.argv[1]
+repo_id = sys.argv[2]
+filename_filter = sys.argv[3]
 
 # HuggingFace cache structure: cache_dir/models--org--name/snapshots/hash/
 # Try both with and without 'hub/' subdirectory for compatibility