The home names models as people say them (#93)

ddiff --git a/server/views/exchange.js b/server/views/exchange.js
iindex 895e0b8..f1fef5d 100644
---- a/server/views/exchange.js
++++ b/server/views/exchange.js
@@@ -243,7 +243,7 @@ function productsSummary(usage) {
      if (!products.length) return kit.empty({ icon: 'code', title: 'No product has run a model yet', text: 'When one does, its models and daily cost show here and on <a href="/ai">AI in OpenVibe</a>.' });
      const rows = products.slice(0, 5).map((p) => {
          const prod = product(p.product);
--        const top = (p.models || []).slice(0, 2).map((m) => m.model || m.provider).filter(Boolean).join(', ');
++        const top = [...new Set((p.models || []).slice(0, 3).map((m) => modelLabel(m.model || m.provider)).filter(Boolean))].slice(0, 2).join(', ');
          return `<li class="ex-product-row"><a href="/ai">${productMark(p.product, { size: 28 })}<span><b>${esc(prod.name)}</b><small>${top ? `runs ${esc(top)}` : 'runs models through OpenVibe.AI'}</small></span><span class="ex-trail"><b>${count(p.requests)}</b><small>requests</small></span></a></li>`;
      }).join('');
      return `<ul class="ex-product-list">${rows}</ul>`;
@@@ -464,6 +464,14 @@ function shortCount(n) {
      return v >= 1e6 ? `${(v / 1e6).toFixed(2)}M` : v >= 1e4 ? `${(v / 1e3).toFixed(1)}k` : count(v);
  }
  
++/** A model id as people say it on the home: the dated snapshot suffix dropped, OpenAI's ids as OpenAI writes them
++ *  ("gpt-5-nano-2025-08-07" → "GPT-5 nano"). The /ai page keeps the exact ids. */
++function modelLabel(id) {
++    const bare = String(id || '').replace(/-\d{4}-\d{2}-\d{2}$/, '');
++    const known = { 'deepseek-chat': 'DeepSeek Chat', 'deepseek-reasoner': 'DeepSeek Reasoner', 'qwen2.5-1.5b-instruct': 'Qwen2.5 1.5B (local)' };
++    return known[bare] || require('../ai').displayName(bare);
++}
++
  // ── Sell compute ───────────────────────────────────────────
  const HOUSE_SERVER = /^local\d*$/;