added export conversation feature.

src/util/miscUtil.ts

@@ -66,4 +66,27 @@ export const generateNewRegionName = (trackId: string): string => {
     }
     i++;
   }
-};
+};
+
+/** Create and trigger a download for a text/blob payload */
+export function downloadBlob(content: BlobPart, mimeType: string, filename: string): void {
+  const blob = new Blob([content], { type: mimeType });
+  const url = URL.createObjectURL(blob);
+  const link = document.createElement('a');
+  link.href = url;
+  link.download = filename;
+  document.body.appendChild(link);
+  link.click();
+  document.body.removeChild(link);
+  URL.revokeObjectURL(url);
+}
+
+/** Pad number with leading zero to 2 digits */
+export function pad2(n: number): string {
+  return n.toString().padStart(2, '0');
+}
+
+/** Build timestamped filename suffix YYYY-MM-DD-hh-mm-ss */
+export function buildTimestampSuffix(date: Date = new Date()): string {
+  return `${date.getFullYear()}-${pad2(date.getMonth() + 1)}-${pad2(date.getDate())}-${pad2(date.getHours())}-${pad2(date.getMinutes())}-${pad2(date.getSeconds())}`;
+}

src/util/timeUtil.ts

@@ -87,4 +87,22 @@ export function beatsToTimeString(
   const mmm = milliseconds.toString().padStart(3, '0');
   
   return `${BBB}:${B} | ${mm}:${ss}:${mmm}`;
-} 
+} 
+
+/**
+ * Format a Date object into a human-readable local datetime string with timezone.
+ * Example: 2025/08/21, 19:57:11 GMT-7
+ */
+export function formatLocalDateTime(date: Date): string {
+  const options: Intl.DateTimeFormatOptions = {
+    year: 'numeric',
+    month: '2-digit',
+    day: '2-digit',
+    hour: '2-digit',
+    minute: '2-digit',
+    second: '2-digit',
+    hour12: false,
+    timeZoneName: 'short'
+  };
+  return date.toLocaleString(undefined, options);
+}

src/util/xmlUtil.ts

@@ -49,4 +49,21 @@ export function extractXMLFromString(input: string): string[] {
   }
   
   return matches;
-}
+}
+
+/**
+ * Wrap XML blocks in content with fenced code blocks
+ * @param content - The input string that may contain XML blocks
+ * @returns The input string with XML blocks wrapped in fenced code blocks
+ */
+export const wrapXmlBlocksInContent = (content: string): string => {
+  if (!content) return content;
+  const xmlBlocks = extractXMLFromString(content);
+  if (!xmlBlocks || xmlBlocks.length === 0) return content;
+  let result = content;
+  for (const block of xmlBlocks) {
+    const fenced = '```\n' + block + '\n```';
+    result = result.split(block).join(fenced);
+  }
+  return result;
+};