feat: CSV export from analytics page

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/admin/analytics/AnalyticsPage.jsx

@@ -1,5 +1,5 @@
 import { useMemo } from 'react';
-import { TrendingUp } from 'lucide-react';
+import { TrendingUp, Download } from 'lucide-react';
 import { useAnalyticsPage } from './useAnalyticsPage';
 
 const MONTHS_RU = ['Янв', 'Фев', 'Мар', 'Апр', 'Май', 'Июн', 'Июл', 'Авг', 'Сен', 'Окт', 'Ноя', 'Дек'];
@@ -103,6 +103,28 @@ const AnalyticsPage = () => {
     return Object.values(map).sort((a, b) => b.revenue - a.revenue);
   }, [orders]);
 
+  const handleExportCSV = () => {
+    const BOM = '';
+    const headers = ['ID', 'Статус', 'Сумма', 'Дата создания', 'Менеджер', 'Плёнка'];
+    const rows = orders.map((o) => [
+      o.id,
+      o.status ?? '',
+      o.final_cost ?? '',
+      o.created_at ? new Date(o.created_at).toLocaleDateString('ru-RU') : '',
+      o.assigned_to ?? '',
+      o.film_thickness ?? '',
+    ].map((v) => `"${String(v).replace(/"/g, '""')}"`).join(','));
+
+    const csv = BOM + [headers.join(','), ...rows].join('\n');
+    const blob = new Blob([csv], { type: 'text/csv;charset=utf-8' });
+    const url = URL.createObjectURL(blob);
+    const a = document.createElement('a');
+    a.href = url;
+    a.download = `orders-${new Date().toISOString().slice(0, 10)}.csv`;
+    a.click();
+    URL.revokeObjectURL(url);
+  };
+
   if (loading) {
     return (
       <div style={{ padding: 30, textAlign: 'center', color: 'var(--text-muted)', paddingTop: 80 }}>
@@ -119,16 +141,28 @@ const AnalyticsPage = () => {
   return (
     <div style={{ padding: 30, maxWidth: 900 }}>
       {/* Page title */}
-      <div style={{ display: 'flex', alignItems: 'center', gap: 10, marginBottom: 28 }}>
-        <TrendingUp size={22} color="var(--accent-blue)" />
-        <h1 style={{
-          fontFamily: 'var(--font-heading)',
-          fontWeight: 800,
-          fontSize: '1.45rem',
-          color: 'var(--text-main)',
-        }}>
+      <div style={{ display: 'flex', alignItems: 'center', justifyContent: 'space-between', marginBottom: '24px' }}>
+        <h1 style={{ fontFamily: 'var(--font-heading)', fontSize: '1.5rem', fontWeight: 800, display: 'flex', alignItems: 'center', gap: '10px' }}>
+          <TrendingUp size={22} color="var(--accent-blue)" />
           Аналитика
         </h1>
+        <button
+          onClick={handleExportCSV}
+          disabled={loading || orders.length === 0}
+          style={{
+            display: 'inline-flex', alignItems: 'center', gap: '6px',
+            padding: '8px 16px', borderRadius: '8px', cursor: 'pointer',
+            background: 'transparent', border: '1.5px solid #E9ECEF',
+            fontSize: '0.88rem', fontWeight: 600, color: '#1E1E2D',
+            fontFamily: 'var(--font-heading)',
+            opacity: (loading || orders.length === 0) ? 0.5 : 1,
+          }}
+          onMouseEnter={(e) => e.currentTarget.style.borderColor = '#4361EE'}
+          onMouseLeave={(e) => e.currentTarget.style.borderColor = '#E9ECEF'}
+        >
+          <Download size={15} />
+          Экспорт CSV
+        </button>
       </div>
 
       {/* Section A — Summary cards */}