feat(透视表): 列数超6时分块垂直排列 + 规格型号列升降序

- 人员/工序列超过 CHUNK_MATRIX(6) 时按列分块，多张透视表垂直向下排列，告别一行十几个人员横向超长
- 规格型号列支持点击升降序排序(中文字典序)
- 每块独立合计

frontend/src/pages/MatrixBoard.tsx

@@ -4,11 +4,15 @@
  */
 import { useEffect, useMemo, useState } from "react";
 import { Radio, Table, DatePicker, Button } from "antd";
+import { Loader2 } from "lucide-react";
 import type { Dayjs } from "dayjs";
 import { fetchWipMatrix, type WipMatrixRow } from "../services/dashboardApi";
 
 const { RangePicker } = DatePicker;
 
+// 每块最多显示的人员/工序列数，超过则分块垂直排列，避免横向超长
+const CHUNK_MATRIX = 6;
+
 export default function MatrixBoard() {
   const [dimension, setDimension] = useState<"assignee" | "task_name">("assignee");
   const [range, setRange] = useState<[Dayjs, Dayjs] | null>(null);
@@ -28,46 +32,63 @@ export default function MatrixBoard() {
   }, [dimension, range]);
 
   // 🔧 核心：扁平数组 → 动态交叉表（规格型号为行、dimension_key 为列）
-  const { columns, dataSource } = useMemo(() => {
+  // 列数超过 CHUNK_MATRIX 时分块垂直排列，避免一行十几个人员横向超长
+  const matrixChunks = useMemo(() => {
     const keys = Array.from(new Set(data.map((d) => d.dimension_key)));
-    const rowsMap = new Map<string, any>();
-    for (const item of data) {
-      if (!rowsMap.has(item.spec_model)) {
-        rowsMap.set(item.spec_model, { spec_model: item.spec_model, _assignees: {}, row_total: 0 });
+    if (keys.length === 0) return [];
+    const chunks: { columns: any[]; dataSource: any[] }[] = [];
+
+    for (let i = 0; i < keys.length; i += CHUNK_MATRIX) {
+      const chunkKeys = keys.slice(i, i + CHUNK_MATRIX);
+      const keySet = new Set(chunkKeys);
+      const rowsMap = new Map<string, any>();
+      for (const item of data) {
+        if (!keySet.has(item.dimension_key)) continue;
+        if (!rowsMap.has(item.spec_model)) {
+          rowsMap.set(item.spec_model, { spec_model: item.spec_model, _assignees: {}, row_total: 0 });
+        }
+        const row = rowsMap.get(item.spec_model);
+        row[item.dimension_key] = (row[item.dimension_key] || 0) + item.count;
+        row.row_total += item.count;
+        // 记录每个交叉点的主负责人（中文名，去重）
+        row._assignees[item.dimension_key] = item.assignees || [];
       }
-      const row = rowsMap.get(item.spec_model);
-      row[item.dimension_key] = (row[item.dimension_key] || 0) + item.count;
-      row.row_total += item.count;
-      // 记录每个交叉点的主负责人（中文名，去重）
-      row._assignees[item.dimension_key] = item.assignees || [];
-    }
-    const ds = Array.from(rowsMap.values());
 
-    const cols: any[] = [
-      { title: "规格型号", dataIndex: "spec_model", fixed: "left", width: 190, render: (v: string) => <span className="font-semibold text-gray-700">{v}</span> },
-      ...keys.map((key) => ({
-        title: key,
-        dataIndex: key,
-        align: "center" as const,
-        width: 120,
-        render: (val: number, record: any) => {
-          const assignees = record._assignees?.[key] || [];
-          return (
-            <div className="text-center">
-              <div className="text-sm font-bold text-gray-800">{val || 0}</div>
-              {assignees.length > 0 && (
-                <div className="max-w-[100px] truncate text-[10px] text-gray-400" title={assignees.join("、")}>
-                  {assignees.join("、")}
-                </div>
-              )}
-            </div>
-          );
+      const columns: any[] = [
+        {
+          title: "规格型号",
+          dataIndex: "spec_model",
+          fixed: "left",
+          width: 170,
+          sorter: (a: any, b: any) => String(a.spec_model).localeCompare(String(b.spec_model), "zh"),
+          sortDirections: ["ascend", "descend"],
+          render: (v: string) => <span className="font-semibold text-gray-700">{v}</span>,
         },
-      })),
-      { title: "合计", dataIndex: "row_total", fixed: "right" as const, align: "center" as const, width: 90, render: (v: number) => <span className="font-bold text-blue-600">{v}</span> },
-    ];
+        ...chunkKeys.map((key) => ({
+          title: key,
+          dataIndex: key,
+          align: "center" as const,
+          width: 120,
+          render: (val: number, record: any) => {
+            const assignees = record._assignees?.[key] || [];
+            return (
+              <div className="text-center">
+                <div className="text-sm font-bold text-gray-800">{val || 0}</div>
+                {assignees.length > 0 && (
+                  <div className="max-w-[100px] truncate text-[10px] text-gray-400" title={assignees.join("、")}>
+                    {assignees.join("、")}
+                  </div>
+                )}
+              </div>
+            );
+          },
+        })),
+        { title: "合计", dataIndex: "row_total", fixed: "right" as const, align: "center" as const, width: 90, render: (v: number) => <span className="font-bold text-blue-600">{v}</span> },
+      ];
 
-    return { columns: cols, dataSource: ds };
+      chunks.push({ columns, dataSource: Array.from(rowsMap.values()) });
+    }
+    return chunks;
   }, [data]);
 
   return (
@@ -93,18 +114,34 @@ export default function MatrixBoard() {
         </div>
       </div>
 
-      <div className="rounded-xl bg-white p-4 shadow-sm">
-        <Table
-          columns={columns}
-          dataSource={dataSource}
-          loading={loading}
-          rowKey="spec_model"
-          bordered
-          size="small"
-          pagination={false}
-          scroll={{ x: "max-content" }}
-        />
-      </div>
+      {loading && data.length === 0 ? (
+        <div className="flex items-center justify-center py-20">
+          <Loader2 className="h-8 w-8 animate-spin text-blue-500" />
+        </div>
+      ) : matrixChunks.length === 0 ? (
+        <div className="rounded-xl bg-white py-16 text-center text-sm text-gray-400 shadow-sm">暂无数据</div>
+      ) : (
+        /* 🔧 瀑布流：人员/工序列超 CHUNK_MATRIX 时，按列分块垂直向下排列 */
+        <div className="flex flex-col gap-8">
+          {matrixChunks.map((chunk, idx) => (
+            <div key={idx} className="relative">
+              {idx > 0 && <div className="absolute -top-4 left-0 w-full border-t border-dashed border-gray-200" />}
+              <div className="rounded-xl bg-white p-4 shadow-sm">
+                <Table
+                  columns={chunk.columns}
+                  dataSource={chunk.dataSource}
+                  loading={loading}
+                  rowKey="spec_model"
+                  bordered
+                  size="small"
+                  pagination={false}
+                  scroll={{ x: "max-content" }}
+                />
+              </div>
+            </div>
+          ))}
+        </div>
+      )}
     </div>
   );
 }