Function attachComboboxPicker

attachComboboxPicker(
    picker: HTMLElement,
    opts?: {
        createLabel?: string;
        entries: () => { key: string; label: string }[];
        onCreate?: (filter: string) => Promise<{ key: any; label: any } | null>;
    },
): void
Generic combobox controller used by the action attribute pickers.

Expected markup inside the picker wrapper: <input class="resource-picker-input" ... />
The wrapper element's data-selected-key is set to the chosen value. Callers (e.g. _onAddCost) read this attribute instead of relying on a <select>.
Parameters
- picker: HTMLElement
  The .resource-cost-picker wrapper.
- opts: {
      createLabel?: string;
      entries: () => { key: string; label: string }[];
      onCreate?: (filter: string) => Promise<{ key: any; label: any } | null>;
  } = {}
  - OptionalcreateLabel?: string
    
    When set, appends a "+ Create…" footer entry.
  - entries: () => { key: string; label: string }[]
    
    Live option source.
  - OptionalonCreate?: (filter: string) => Promise<{ key: any; label: any } | null>
    
    Invoked when Create is clicked.
Returns void
- Defined in module/helpers/resource-picker.mjs:21