feat(Combobox): add create to combobox

[qstearns]

Adds an option to supply a create callback to the combo box which allows you to create an item that you supply

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Note

Adds a createOptions API to Combobox to create a new option from the current search, with an example Storybook story.

• Components:
  • src/components/Combobox/index.tsx
    • Add createOptions prop with handleCreate(search) and optional renderCreatePrompt(search).
    • Render a "Create …" CommandItem when search is non-empty, invoking handleCreate.
• Storybook:
  • src/components/Combobox/index.stories.tsx
    • Add WithCreateOption story demonstrating dynamic option creation using useState.

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Bug: Conflicting UI elements in empty search state.

When no filtered items match the search but createOptions is provided, both the "No option found" message and the create option are displayed simultaneously. The empty state message should be suppressed when the create option is available and there's search text, as the create option provides a valid action.

src/components/Combobox/index.tsx#L163-L165

moonshine/src/components/Combobox/index.tsx

Lines 163 to 165 in 44bab5c

	<CommandItem disabled>{errorText}</CommandItem>
	) : filteredItems.length === 0 ? (
	<CommandItem disabled>{emptyText}</CommandItem>

 

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[cursor]

Bug: Ensure consistent popover behavior on creation.

When the create option is selected, the popover remains open and the search text isn't cleared. This differs from selecting a regular option, which closes the popover and clears the search via handleSelect. The handleCreate callback should trigger the same cleanup behavior for consistent UX.