Improve pricing modal performance and charting

web/templates/admin_pricing.html

@@ -507,6 +507,23 @@
                     Кол-во котировок: <span id="modal-quote-count">—</span>
                 </div>
             </div>
+
+            <div class="bg-gray-50 p-3 rounded space-y-2">
+                <div class="text-sm font-medium text-gray-700">График цены</div>
+                <div id="modal-price-chart" class="w-full">
+                    <div class="h-44 flex items-center justify-center text-sm text-gray-400">Загрузка...</div>
+                </div>
+                <div class="flex items-center gap-4 text-xs text-gray-500">
+                    <span class="inline-flex items-center gap-1">
+                        <span class="w-3 h-0.5 bg-orange-500"></span>
+                        Котировки
+                    </span>
+                    <span class="inline-flex items-center gap-1">
+                        <span class="w-3 h-0.5 bg-slate-500"></span>
+                        Текущая цена
+                    </span>
+                </div>
+            </div>
         </div>
         <div class="flex justify-end gap-2 p-4 border-t">
             <button onclick="closeModal()" class="px-4 py-2 border rounded hover:bg-gray-50">Отмена</button>