pib-components-dx-base 0.0.0-upstream-snapshot.2026-09-19.1

temporary fork for Politik im Blick - Dioxus components
Documentation
The DatePicker component is used to display a date input and a Calendar popover, allowing users to enter or select a date value.

## Component Structure

```rust
DatePicker {
    // The currently selected date in the date picker (if any).
    selected_date,
    on_value_change: move |v: Option<Date>| {
        // This callback is triggered when a date is selected in the
        // calendar or the user entered it from the keyboard.
        // The date parameter contains the selected date.
    },
    // Optional number of pre-composed calendar months to show in the popover.
    month_count: 1,
    // Optional placeholder formatters for the input fields.
    on_format_day_placeholder: || "D",
    on_format_month_placeholder: || "M",
    on_format_year_placeholder: || "Y",
}
```

The styled `DatePicker` and `DateRangePicker` render the input, trigger, popover content, and calendar by default.