Real estate catalog: map, instant filters, mortgage, feed import

Real estate catalog: map, filters, mortgage calculator Three layers, each deeper: 1. Speed you can see in numbers. Visitor drags price slider — map and results rebuild in same frame. Honest badge next to it: '184 objects · filter 3 ms · 0 server requests'. Numbers are real (performance.now() of last run), not image caption. 2. Baseline you can touch. Toggle 'as in typical template' routes same filters through server round-trip with reload — same result arrives in ~0.6–1.0 sec with spinner. Visitor feels difference, not reads about it. Both modes give identical output — guaranteed by conformance tests PHP↔JS. 3. Search by payment. Instead of 'price from/to' — 'I pay 24,000 ₴/month, 30%…