Replace all MUI/x-date-pickers components in AnalyticsClient.tsx and
WorldMapInner.tsx with shadcn/ui + Tailwind equivalents: local
DateTimePicker (Popover + Calendar + time input using dayjs), interval
toggle group (Button), hosts multi-select (Command + Popover combobox),
pagination (prev/next Buttons), CSS spinner, Skeleton, Tooltip, Table,
Badge, and sonner toast. All business logic and chart configs unchanged.
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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