feat(desktop): implement phase 2 native capabilities

frontend/src/audit/export/auditExportService.ts

@@ -1,6 +1,7 @@
 import { auditExportColumns } from "./auditExportColumns";
 import { formatAuditRows } from "./auditExportFormatter";
 import type { AuditEvent } from "..";
+import { saveFile } from "../../runtime";
 
 const BOM = "\ufeff";
 
@@ -19,13 +20,13 @@ export interface AuditExportOptions {
   fileName: string;
 }
 
-export const exportAuditCsv = (events: AuditEvent[], options: AuditExportOptions) => {
+export const exportAuditCsv = async (events: AuditEvent[], options: AuditExportOptions) => {
   const rows = formatAuditRows(events);
   const csv = buildCsv(rows);
   const blob = new Blob([csv], { type: "text/csv;charset=utf-8;" });
-  const link = document.createElement("a");
-  link.href = URL.createObjectURL(blob);
-  link.download = options.fileName.endsWith(".csv") ? options.fileName : `${options.fileName}.csv`;
-  link.click();
-  URL.revokeObjectURL(link.href);
+  await saveFile({
+    suggestedName: options.fileName.endsWith(".csv") ? options.fileName : `${options.fileName}.csv`,
+    mimeType: "text/csv;charset=utf-8",
+    data: blob,
+  });
 };