💡 What: Replaced subtle button text changes and console logs with a Toast notification system for the "Save Shader Parameters" button.
🎯 Why: Users need clear, accessible feedback when saving parameters to know if the action succeeded or failed. The previous method was easy to miss.
📸 Verification: Verified via Playwright script `verify_toast.py` with mock environment. Screenshot confirms visibility and styling.
♿ Accessibility: Included `role='alert'` and high-contrast styling for the notifications.
🔧 Fixes:
- Addressed potential zombie process in verification script.
- Added fallback cleanup for toast elements if CSS transitions are disabled.
- Fixed event listener memory leak in toast fallback.
- Standardized fallback logic in test environment.
google-labs-jules[bot]
56f05b1794