iter(g69): 修正单击排序升降序循环与 getPageInfo 陈旧快照

packages/core/table-core/scripts/smoke.mjs

@@ -80,4 +80,43 @@ const before = table.getVisibleRows(); // memo 基线
 table.dispatch({ type: 'clearSelection' }); // 无关状态变更
 assert(table.getVisibleRows() === before, 'derive stages memoized across unrelated state changes');
 
+// —— 补充不变量 ——
+const fresh = createTable({
+  data: users,
+  columns: [{ key: 'name', header: 'Name', sortable: true }],
+  rowKey: 'id',
+  plugins: [paginationPlugin()],
+  initialState: { pagination: { page: 2, pageSize: 2 } },
+});
+assert(
+  fresh.getPageInfo().page === 2 && fresh.getPageInfo().pageSize === 2,
+  'getPageInfo 无需先取可见行即返回 initialState 生效值',
+);
+assert(fresh.getPageInfo().totalPages === 3, 'getPageInfo 的 totalPages 由上游 total 推导');
+
+const marks = createTable({
+  data: users,
+  columns: [{ key: 'name', header: 'Name' }, { key: 'city', header: 'City' }],
+  rowKey: 'id',
+  plugins: [filterPlugin(), paginationPlugin(), selectionPlugin()],
+  initialState: { pagination: { page: 1, pageSize: 2 } },
+});
+marks.selectAllVisible(); // 选中第 1 页的 id 1 / 2
+marks.dispatch({ type: 'setFilter', key: 'city', value: 'Beijing' }); // 可见行整体换掉
+assert(
+  JSON.stringify(marks.getState().selection) === JSON.stringify([1, 2]),
+  'selection 以 rowKey 记账，筛选换掉可见行后仍保留',
+);
+
+const toggle = createTable({
+  data: users,
+  columns: [{ key: 'age', header: 'Age', sortable: true }],
+  rowKey: 'id',
+  plugins: [sortPlugin()],
+});
+toggle.dispatch({ type: 'toggleSort', key: 'age' });
+toggle.dispatch({ type: 'toggleSort', key: 'age' });
+toggle.dispatch({ type: 'toggleSort', key: 'age' });
+assert(toggle.getState().sorting.length === 0, '同一列连点三次回到无序（asc → desc → 取消）');
+
 console.log('SMOKE OK');

packages/core/table-core/src/plugins/pagination.ts

@@ -54,7 +54,10 @@ export function paginationPlugin<T = unknown>(): TablePlugin<T> {
         nextPage: () => table.dispatch({ type: 'setPage', page: pageInfo.page + 1 }),
         prevPage: () => table.dispatch({ type: 'setPage', page: pageInfo.page - 1 }),
         setPageSize: (pageSize: number) => table.dispatch({ type: 'setPageSize', pageSize }),
-        getPageInfo: (): PageInfo => ({ ...pageInfo }),
+        getPageInfo: (): PageInfo => {
+          table.getVisibleRows(); // 先跑一遍派生（内部有 memo），保证快照对应当前 state
+          return { ...pageInfo };
+        },
       };
     },
   };

packages/core/table-core/src/plugins/sort.ts

@@ -41,11 +41,13 @@ export function sortPlugin<T = unknown>(
         case 'setSorting':
           return { ...state, sorting: action.sorting };
         case 'toggleSort': {
-          const rules = action.multi ? [...state.sorting] : []; // 非 multi 直接单列重置
-          const idx = rules.findIndex((r) => r.key === action.key);
-          if (idx === -1) rules.push({ key: action.key, dir: initialDir });
-          else if (rules[idx].dir === 'asc') rules[idx] = { key: action.key, dir: 'desc' };
-          else rules.splice(idx, 1); // desc 再点即取消
+          const idx = state.sorting.findIndex((r) => r.key === action.key); // 本列当前方向的位置
+          // 非 multi 只保留本列（单选语义），multi 保留全部列；不能一味清空，否则本列永远停在 asc
+          const rules = action.multi ? [...state.sorting] : idx === -1 ? [] : [state.sorting[idx]];
+          const at = rules.findIndex((r) => r.key === action.key);
+          if (at === -1) rules.push({ key: action.key, dir: initialDir });
+          else if (rules[at].dir === 'asc') rules[at] = { key: action.key, dir: 'desc' };
+          else rules.splice(at, 1); // desc 再点即取消
           return { ...state, sorting: rules };
         }
         default: