WidgetContainer redesign:
- Remove grey bg-gray-50/50 header background (clashed with dark theme)
- Header now uses transparent background with subtle separator line
- Add description prop — shows catalog description under title
- Drag grip dots appear on hover (6-dot pattern, hidden by default)
- Remove button appears on hover with red highlight
- Dark theme: bg-gray-900, border-gray-700/60, gray-800 separator
- Drag state: ring-2 ring-brand-400/30 with scale effect
- Hover state: shadow-md with border color transition
DashboardClient: passes widget.description to WidgetContainer
Co-Authored-By: claude-flow <ruv@ruv.net>
Hartmutandclaude-flow
2c65abd231