fix: check multiple locations for .env file

- Try PROJECT_ROOT/ai/.env first
- Fallback to PROJECT_ROOT/.env
- Fallback to /workspace/ai/.env
- Fixes HF_TOKEN loading on RunPod

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

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

artifact_comfyui_download.sh

@@ -107,9 +107,16 @@ COMFYUI_DIR="${COMFYUI_DIR:-${HOME}/ComfyUI/models}"
 COMMAND="both"
 
 # HuggingFace token from environment or .env file
-if [[ -f "${PROJECT_ROOT}/.env" ]]; then
+# Try multiple locations for .env file
+if [[ -z "${HF_TOKEN}" ]] && [[ -f "${PROJECT_ROOT}/ai/.env" ]]; then
+    HF_TOKEN=$(grep ^HF_TOKEN "${PROJECT_ROOT}/ai/.env" | cut -d'=' -f2- | tr -d '"' | tr -d "'" || true)
+fi
+if [[ -z "${HF_TOKEN}" ]] && [[ -f "${PROJECT_ROOT}/.env" ]]; then
     HF_TOKEN=$(grep ^HF_TOKEN "${PROJECT_ROOT}/.env" | cut -d'=' -f2- | tr -d '"' | tr -d "'" || true)
 fi
+if [[ -z "${HF_TOKEN}" ]] && [[ -f "/workspace/ai/.env" ]]; then
+    HF_TOKEN=$(grep ^HF_TOKEN "/workspace/ai/.env" | cut -d'=' -f2- | tr -d '"' | tr -d "'" || true)
+fi
 HF_TOKEN="${HF_TOKEN:-}"
 
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