The combobox modal used lt-combobox-list but lt.combobox looks for
lt-combobox-dropdown — it returned immediately, wiring nothing.
Replaced with lt.typeahead which is correct for single-select search:
- Filters users client-side as you type (minChars:1, debounced 150ms)
- Shows display_name (username) with highlight on match
- onSelect stores user ID and shows "✓ Name" confirmation below input
- Input auto-focuses when modal opens
- Enter key now selects first result even without arrow-key navigation
(same fix applied to lt.combobox Enter handler)
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>