Redesign compare board for many sheets: sidebar nav + strip + table.

Co-authored-by: Cursor <cursoragent@cursor.com>

web/src/i18n/en.ts

@@ -337,6 +337,9 @@ const en = {
     matchedRows: "Matched",
     totalRows: "Total rows",
     sheetCount: "Sheets",
+    sheetNavTitle: "Items",
+    sheetNavHint: "{{n}} items · click to switch",
+    sheetFailCount: "{{n}} with diffs",
     topChangedFields: "Top changed fields",
     exportTables: "Download tables",
     exportOk: "Compare tables exported",

web/src/i18n/zh.ts

@@ -336,6 +336,9 @@ const zh = {
     matchedRows: "对齐条目",
     totalRows: "合计条目",
     sheetCount: "监控表",
+    sheetNavTitle: "对比项",
+    sheetNavHint: "共 {{n}} 项 · 点击切换",
+    sheetFailCount: "{{n}} 项有差异",
     topChangedFields: "变更字段 Top",
     exportTables: "下载表格",
     exportOk: "已导出比对表格",