Preserve QExcell cell notes in XLSX

src/io/excellOffice.test.ts

@@ -4,6 +4,7 @@ import {
   buildChartXml,
   buildCellXml,
   buildAutoFilterXml,
+  buildCommentsXml,
   buildColumnWidthsXml,
   buildHyperlinksXml,
   buildMergeCellsXml,
@@ -28,6 +29,7 @@ import {
   worksheetXmlToHiddenColumns,
   worksheetXmlToHiddenRows,
   worksheetXmlToHyperlinks,
+  worksheetCommentsXmlToComments,
   worksheetXmlToMergedCells,
   worksheetXmlToRowHeights,
   worksheetXmlToShowGridLines,
@@ -145,6 +147,58 @@ describe("excellOffice OOXML helpers", () => {
     expect(relationshipsXml).not.toContain('TargetMode="External"');
   });
 
+  it("собирает и читает legacy comments XLSX для заметок ячеек", () => {
+    const commentsXml = buildCommentsXml({ B2: "Проверить сумму", A1: "Комментарий\nв две строки" });
+    const parsedComments = worksheetCommentsXmlToComments({
+      comments: {
+        commentList: {
+          comment: [
+            { ref: "B2", text: { t: "Проверить сумму" } },
+            { ref: "A1", text: { r: [{ t: "Комментарий" }, { t: "\nв две строки" }] } }
+          ]
+        }
+      }
+    });
+
+    expect(commentsXml).toContain('<comment ref="A1" authorId="0"><text><t>Комментарий\nв две строки</t></text></comment>');
+    expect(commentsXml).toContain('<comment ref="B2" authorId="0"><text><t>Проверить сумму</t></text></comment>');
+    expect(parsedComments).toEqual({ A1: "Комментарий\nв две строки", B2: "Проверить сумму" });
+  });
+
+  it("сохраняет заметки ячеек XLSX в comments, VML и relationships", async () => {
+    const blob = await exportXlsxBlob({
+      id: "workbook",
+      title: "Comments.xlsx",
+      updatedAt: "2026-06-01T00:00:00.000Z",
+      activeSheet: "sheet-1",
+      sheets: [
+        {
+          id: "sheet-1",
+          name: "Sheet 1",
+          cells: { A1: "Итого" },
+          comments: { A1: "Проверено финансовым отделом" }
+        }
+      ]
+    });
+    const zip = await JSZip.loadAsync(await blob.arrayBuffer());
+    const contentTypesXml = await zip.file("[Content_Types].xml")?.async("string");
+    const worksheetXml = await zip.file("xl/worksheets/sheet1.xml")?.async("string");
+    const relationshipsXml = await zip.file("xl/worksheets/_rels/sheet1.xml.rels")?.async("string");
+    const commentsXml = await zip.file("xl/comments1.xml")?.async("string");
+    const vmlXml = await zip.file("xl/drawings/vmlDrawing1.vml")?.async("string");
+    const imported = await importXlsxFile(new File([blob], "Comments.xlsx", { type: blob.type }));
+
+    expect(contentTypesXml).toContain("/xl/comments1.xml");
+    expect(contentTypesXml).toContain('Extension="vml"');
+    expect(worksheetXml).toContain('<legacyDrawing r:id="rId2"/>');
+    expect(relationshipsXml).toContain('Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/comments"');
+    expect(relationshipsXml).toContain('Target="../comments1.xml"');
+    expect(relationshipsXml).toContain('Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/vmlDrawing"');
+    expect(commentsXml).toContain('<comment ref="A1" authorId="0">');
+    expect(vmlXml).toContain("<x:Row>0</x:Row><x:Column>0</x:Column>");
+    expect(imported.sheets[0].comments).toEqual({ A1: "Проверено финансовым отделом" });
+  });
+
   it("сохраняет базовое форматирование ячеек XLSX в XML листа", () => {
     const cellFormats = {
       A1: { bold: true, fontSize: 14, fontFamily: "Arial", textColor: "0f5fae", fillColor: "fff2cc", horizontalAlign: "center" as const },