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Replaces community dropdown with text input supporting city/ZIP search: - Ghost text autocomplete shows inline suggestion as user types - Tab to accept, auto-fill on blur, Enter uses partial match - Geolocation button for "Use My Location" searches - AJAX endpoint returns MN/IA cities and zipcodes with 1-hour cache - MLS query now supports lat/lng/radius for distance-based filtering - Updated Census Bureau 2023 Gazetteer data (32,329 US cities) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>