Replace custom SVG icons and @mui/icons-material with lucide-react for consistent,
lightweight icon management across the application.
## Changes
- Add lucide-react package and remove @mui/icons-material
- Create theme-aware Icon wrapper component with color resolution
- Create iconMap.js for legacy icon name mappings
- Migrate 64 components to use new Icon component
- Remove 74 unused SVG files from assets/icons/
## Benefits
- Consistent icon API across the application
- Smaller bundle size with tree-shakeable imports
- Theme-aware color support via MUI theme paths
- Simpler maintenance with single icon library
The delete handler was using monitor._id from state, which was undefined
because the fetched monitor object didn't have _id populated. Changed to
use monitorId directly from URL params, which is already available and
used by other handlers in the same component (e.g., handlePause).
Fixes "Failed to delete monitor" error when removing pagespeed monitors.
gorkem-bwl
Alex Holliday
Matt Stein
Jesulayomy
Vishnu Sreekumaran Nair