Drop docx export to fix CRA beta build

docx@9 ESM trips Babel during react-scripts build; keep PDF/CSV/XLSX/TXT.

llm-fe/src/llm-fe/components/MessageActions/MessageActions.tsx

@@ -309,7 +309,6 @@ const MessageActions = ({
         {(
           [
             ['pdf', 'PDF'],
-            ['docx', 'Word (.docx)'],
             ['csv', 'CSV'],
             ['xlsx', 'Excel (.xlsx)'],
             ['txt', 'Plain text'],

llm-fe/src/llm-fe/pages/AsyncDashboard2/AsyncDashboard2.tsx

@@ -575,7 +575,6 @@ const AsyncDashboardInner = (): JSX.Element => {
               {(
                 [
                   ['pdf', 'PDF'],
-                  ['docx', 'Word (.docx)'],
                   ['csv', 'CSV'],
                   ['xlsx', 'Excel (.xlsx)'],
                   ['txt', 'Plain text'],

llm-fe/src/llm-fe/utils/export/exportChat.ts

@@ -8,7 +8,7 @@ import {
   type MdBlock,
 } from './markdownUtils';
 
-export type ExportFormat = 'pdf' | 'docx' | 'csv' | 'xlsx' | 'txt';
+export type ExportFormat = 'pdf' | 'csv' | 'xlsx' | 'txt';
 
 export type ExportTurn = {
   role: 'user' | 'assistant';
@@ -52,7 +52,7 @@ function citationFootnotes(citations?: Citation[]): string {
 
 export async function exportChat(options: ExportOptions): Promise<void> {
   const { format, scope, title, turns } = options;
-  const filename = buildExportFilename(title, format === 'docx' ? 'docx' : format);
+  const filename = buildExportFilename(title, format);
   const exportedAt = new Date().toISOString();
 
   // Yield so large conversations don't freeze the main thread (#97).
@@ -71,9 +71,6 @@ export async function exportChat(options: ExportOptions): Promise<void> {
     case 'pdf':
       await exportPdf(title, turns, exportedAt, filename);
       break;
-    case 'docx':
-      await exportDocx(title, turns, exportedAt, filename);
-      break;
     default:
       throw new Error(`Unsupported export format: ${format}`);
   }
@@ -304,169 +301,6 @@ async function exportPdf(
   });
 }
 
-async function exportDocx(
-  title: string,
-  turns: ExportTurn[],
-  exportedAt: string,
-  filename: string,
-): Promise<void> {
-  const {
-    Document,
-    Packer,
-    Paragraph,
-    TextRun,
-    HeadingLevel,
-    Table,
-    TableRow,
-    TableCell,
-    WidthType,
-    Header,
-  } = await import('docx');
-
-  const children: InstanceType<typeof Paragraph | typeof Table>[] = [
-    new Paragraph({
-      text: title,
-      heading: HeadingLevel.TITLE,
-    }),
-    new Paragraph({
-      children: [
-        new TextRun({ text: `Exported ${exportedAt}`, italics: true, size: 18, color: '666666' }),
-      ],
-    }),
-  ];
-
-  for (let i = 0; i < turns.length; i += 1) {
-    if (i > 0 && i % 20 === 0) await yieldToUi();
-    const turn = turns[i];
-    if (turns.length > 1) {
-      children.push(
-        new Paragraph({
-          children: [
-            new TextRun({
-              text: `${roleLabel(turn.role)}${turn.timestamp ? ` · ${formatTs(turn.timestamp)}` : ''}`,
-              bold: true,
-            }),
-          ],
-          spacing: { before: 240 },
-        }),
-      );
-    }
-
-    for (const block of parseMarkdownBlocks(turn.message)) {
-      switch (block.type) {
-        case 'heading': {
-          const level =
-            block.level === 1
-              ? HeadingLevel.HEADING_1
-              : block.level === 2
-                ? HeadingLevel.HEADING_2
-                : HeadingLevel.HEADING_3;
-          children.push(new Paragraph({ text: block.text, heading: level }));
-          break;
-        }
-        case 'paragraph':
-          children.push(new Paragraph({ text: block.text }));
-          break;
-        case 'code':
-          children.push(
-            new Paragraph({
-              children: [new TextRun({ text: block.text, font: 'Courier New', size: 18 })],
-            }),
-          );
-          break;
-        case 'list':
-          block.items.forEach((item, idx) => {
-            children.push(
-              new Paragraph({
-                text: block.ordered ? `${idx + 1}. ${item}` : `• ${item}`,
-              }),
-            );
-          });
-          break;
-        case 'table':
-          children.push(
-            new Table({
-              width: { size: 100, type: WidthType.PERCENTAGE },
-              rows: [
-                new TableRow({
-                  children: block.headers.map(
-                    (h) =>
-                      new TableCell({
-                        children: [
-                          new Paragraph({
-                            children: [new TextRun({ text: h, bold: true })],
-                          }),
-                        ],
-                      }),
-                  ),
-                }),
-                ...block.rows.map(
-                  (row) =>
-                    new TableRow({
-                      children: block.headers.map(
-                        (_, col) =>
-                          new TableCell({
-                            children: [new Paragraph({ text: row[col] ?? '' })],
-                          }),
-                      ),
-                    }),
-                ),
-              ],
-            }),
-          );
-          break;
-        default:
-          break;
-      }
-    }
-
-    if (turn.citations?.length) {
-      children.push(
-        new Paragraph({
-          text: 'Sources',
-          heading: HeadingLevel.HEADING_3,
-        }),
-      );
-      turn.citations
-        .slice()
-        .sort((a, b) => a.index - b.index)
-        .forEach((c) => {
-          children.push(
-            new Paragraph({
-              text: `[${c.index}] ${c.title}${c.url ? ` — ${c.url}` : ''}`,
-            }),
-          );
-        });
-    }
-  }
-
-  const doc = new Document({
-    sections: [
-      {
-        headers: {
-          default: new Header({
-            children: [
-              new Paragraph({
-                children: [
-                  new TextRun({
-                    text: `${title} · ${exportedAt}`,
-                    size: 16,
-                    color: '888888',
-                  }),
-                ],
-              }),
-            ],
-          }),
-        },
-        children,
-      },
-    ],
-  });
-
-  const blob = await Packer.toBlob(doc);
-  downloadBlob(blob, filename);
-}
-
 /** Decide CSV/XLSX matrix strategy — exported for unit tests. */
 export function selectTabularStrategy(
   scope: ExportScope,