feat: implement second page header in export

- Add multi-section support when secondPageHeader is enabled
- Each page gets its own header row when content spans multiple pages
- Only applies when days exceed estimated page capacity

app/page.tsx

@@ -226,8 +226,9 @@ export default function RecipeTranslationPage() {
             const exportConfig = configResult.success ? configResult.data?.export : {
                 untranslatedColor: "CC0000",
                 orientation: "landscape",
+                secondPageHeader: false,
             };
-            const { untranslatedColor, orientation } = exportConfig;
+            const { untranslatedColor, orientation, secondPageHeader } = exportConfig;
 
             // 2. 收集所有需要翻译的内容（星期、餐食类型、菜品）
             const allNames: string[] = [];
@@ -273,43 +274,8 @@ export default function RecipeTranslationPage() {
             // 3. 构建翻译映射函数
             const t = (zh: string): string => translations[zh] || "";
 
-            // 4. 构建表格数据
+            // 4. 构建表格数据 - 生成所有数据行
-            const tableRows: TableRow[] = [];
+            const dayRows: TableRow[] = [];
-
-            // 表头行 - 星期列头 + 餐食类型都要上中下英
-            const headerCells: TableCell[] = [];
-            headerCells.push(
-                new TableCell({
-                    children: [
-                        new Paragraph({children: [new TextRun({text: "星期 / Week", bold: true})]}),
-                    ].filter((p): p is Paragraph => p !== null) as unknown as Paragraph[],
-                    width: {size: 12, type: WidthType.PERCENTAGE},
-                }),
-            );
-
-            for (const mealType of MEAL_TYPES) {
-                const zhText = mealType.label;
-                const enText = t(zhText);
-                headerCells.push(
-                    new TableCell({
-                        children: [
-                            new Paragraph({children: [new TextRun({text: enText || zhText, bold: true})]}),
-                            enText ? new Paragraph({
-                                children: [new TextRun({
-                                    text: zhText,
-                                    color: "666666",
-                                    size: 18
-                                })]
-                            }) : null,
-                        ].filter((p): p is Paragraph => p !== null) as unknown as Paragraph[],
-                        width: {size: 17.6, type: WidthType.PERCENTAGE},
-                    })
-                );
-            }
-
-            tableRows.push(new TableRow({children: headerCells, tableHeader: true}));
-
-            // 数据行（使用实际数据中的星期）- 上中下英
             for (const day of data.days) {
                 const dayZh = day.name.zh || "";
                 const dayEn = t(dayZh) || translations[dayZh] || "";
@@ -370,17 +336,64 @@ export default function RecipeTranslationPage() {
                     );
                 }
 
-                tableRows.push(new TableRow({children: dayCells}));
+                dayRows.push(new TableRow({children: dayCells}));
             }
 
-            // 5. 创建文档 - 根据设置选择页面方向
+            // 5. 创建文档 - 根据设置选择页面方向和分页
             const isLandscape = orientation === "landscape";
             const pageWidth = isLandscape ? 11906 : 16838;
             const pageHeight = isLandscape ? 16838 : 11906;
             
-            const doc = new Document({
+            // 构建表头行
-                sections: [
+            const buildHeaderRow = (): TableRow => {
-                    {
+                const headerCells: TableCell[] = [];
+                headerCells.push(
+                    new TableCell({
+                        children: [
+                            new Paragraph({children: [new TextRun({text: "星期 / Week", bold: true})]}),
+                        ].filter((p): p is Paragraph => p !== null) as unknown as Paragraph[],
+                        width: {size: 12, type: WidthType.PERCENTAGE},
+                    }),
+                );
+                for (const mealType of MEAL_TYPES) {
+                    const zhText = mealType.label;
+                    const enText = t(zhText);
+                    headerCells.push(
+                        new TableCell({
+                            children: [
+                                new Paragraph({children: [new TextRun({text: enText || zhText, bold: true})]}),
+                                enText ? new Paragraph({
+                                    children: [new TextRun({
+                                        text: zhText,
+                                        color: "666666",
+                                        size: 18
+                                    })]
+                                }) : null,
+                            ].filter((p): p is Paragraph => p !== null) as unknown as Paragraph[],
+                            width: {size: 17.6, type: WidthType.PERCENTAGE},
+                        })
+                    );
+                }
+                return new TableRow({children: headerCells, tableHeader: true});
+            };
+            
+            // 估算每页能放多少天（横向 A4 约 27cm 高度，减去标题和边距约 25cm，每行约 1cm）
+            const daysPerPage = 5;
+            
+            // 构建 sections
+            // eslint-disable-next-line @typescript-eslint/no-explicit-any
+            const sections: any[] = [];
+            
+            if (secondPageHeader && dayRows.length > daysPerPage) {
+                // 分页模式：每页有表头
+                const pageCount = Math.ceil(dayRows.length / daysPerPage);
+                
+                for (let page = 0; page < pageCount; page++) {
+                    const startIdx = page * daysPerPage;
+                    const endIdx = Math.min(startIdx + daysPerPage, dayRows.length);
+                    const pageRows = dayRows.slice(startIdx, endIdx);
+                    
+                    sections.push({
                         properties: {
                             page: {
                                 size: {
@@ -389,33 +402,76 @@ export default function RecipeTranslationPage() {
                                     height: pageHeight,
                                 },
                                 margin: {
-                                    top: 700, // 约1.27厘米
+                                    top: 700,
                                     bottom: 700,
-                                    left: 900, // 约1.9厘米
+                                    left: 900,
                                     right: 900,
                                 },
                             },
                         },
                         children: [
-                            new Paragraph({
+                            ...(page === 0 ? [
-                                children: [
+                                new Paragraph({
-                                    new TextRun({
+                                    children: [
-                                        text: t(data.title?.zh || "食谱") || data.title?.zh || "食谱",
+                                        new TextRun({
-                                        bold: true,
+                                            text: t(data.title?.zh || "食谱") || data.title?.zh || "食谱",
-                                        size: 32,
+                                            bold: true,
-                                    }),
+                                            size: 32,
-                                ],
+                                        }),
-                                alignment: AlignmentType.CENTER,
+                                    ],
-                            }),
+                                    alignment: AlignmentType.CENTER,
-                            new Paragraph({children: []}),
+                                }),
+                                new Paragraph({children: []}),
+                            ] : []),
                             new Table({
-                                rows: tableRows,
+                                rows: [buildHeaderRow(), ...pageRows],
                                 width: {size: 100, type: WidthType.PERCENTAGE},
                                 layout: TableLayoutType.FIXED,
                             }),
                         ],
+                    });
+                }
+            } else {
+                // 普通模式：单表格无分页表头
+                sections.push({
+                    properties: {
+                        page: {
+                            size: {
+                                orientation: isLandscape ? PageOrientation.LANDSCAPE : PageOrientation.PORTRAIT,
+                                width: pageWidth,
+                                height: pageHeight,
+                            },
+                            margin: {
+                                top: 700,
+                                bottom: 700,
+                                left: 900,
+                                right: 900,
+                            },
+                        },
                     },
-                ],
+                    children: [
+                        new Paragraph({
+                            children: [
+                                new TextRun({
+                                    text: t(data.title?.zh || "食谱") || data.title?.zh || "食谱",
+                                    bold: true,
+                                    size: 32,
+                                }),
+                            ],
+                            alignment: AlignmentType.CENTER,
+                        }),
+                        new Paragraph({children: []}),
+                        new Table({
+                            rows: [buildHeaderRow(), ...dayRows],
+                            width: {size: 100, type: WidthType.PERCENTAGE},
+                            layout: TableLayoutType.FIXED,
+                        }),
+                    ],
+                });
+            }
+            
+            const doc = new Document({
+                sections,
             });
 
             // 6. 生成并下载