feat: replace html2canvas with native high-quality browser printing

App.tsx

@@ -120,18 +120,17 @@ const App: React.FC = () => {
   }, [handleReset]);
 
   const handleExport = (action: 'preview' | 'download') => {
-    if (reportsData && reportsData.length > 0) {
-      const fileName = `Relatorio_SteelCheck_${reportsData[0].identification.certificateNumber || 'analise'}`;
-      exportAsPdf('printable-report-container', fileName, action);
-    }
+    // Both actions now use native high-quality browser printing/PDF saving
+    window.print();
   };
 
   return (
-    <div className="min-h-screen">
-      {isLoading && <Loader />}
-      <Header onReset={handleReset} onClearKey={handleClearKey} hasKey={hasKey} provider={provider} />
+    <div className="min-h-screen print:bg-white print:m-0 print:p-0">
+      <div className="print:hidden">
+        {isLoading && <Loader />}
+        <Header onReset={handleReset} onClearKey={handleClearKey} hasKey={hasKey} provider={provider} />
 
-      <main className="container mx-auto p-4 sm:p-6 md:p-8 max-w-7xl">
+        <main className="container mx-auto p-4 sm:p-6 md:p-8 max-w-7xl">
         {!hasKey ? (
           <ApiKeySetup onKeySave={handleKeySave} />
         ) : !reportsData ? (
@@ -199,9 +198,10 @@ const App: React.FC = () => {
           </div>
         )}
       </main>
+      </div>
 
       {reportsData && (
-        <div className="absolute -left-[9999px] top-0 opacity-0" aria-hidden="true">
+        <div className="hidden print:block print:w-[210mm] print:mx-auto" aria-hidden="true">
           <PrintableReport reports={reportsData} />
         </div>
       )}