Autocomplete Search (debounce + keyboard + outside click)

Challenge summary

Build a Vue 3 autocomplete search input. It should debounce queries, show a dropdown with results, support keyboard navigation (↑/↓/Enter/Esc), and close on outside click.

What you'll practice

• Render the autocomplete UI as the main component.
• If query is empty (after trim): close dropdown and clear results.
• If query is non-empty: open dropdown and show results.
• Show up to 8 results.
• Keyboard support: ArrowUp/ArrowDown to move active option, Enter to select, Esc to close.

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