feat: toolbar justify-between, selection, and card-fill list-scroll

- 搜索按钮置于表单最右（el-form--inline 设为 flex 容器）
- ty-crud 工具条 justify-between：左新增/#toolbar、右批量 #toolbar-right(selectedRows)
- ty-table 支持 selection 多选列 + selection-change
- 卡片铺满剩余空间、列表内滚动（shell 固定视口 + el-table height=100%）
- 用户管理页加批量删除示例

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

src/components/ty-crud.vue

@@ -4,20 +4,28 @@
       <ty-search-form :schema="searchSchema" :model-value="query" @search="handleSearch" @reset="handleReset" />
     </el-card>
 
-    <el-card shadow="never">
+    <el-card class="ty-crud__table" shadow="never">
       <div class="ty-crud__toolbar">
+        <div class="ty-crud__toolbar-left">
           <el-button type="primary" @click="openCreate">新增{{ entityName }}</el-button>
           <slot name="toolbar" />
         </div>
+        <div class="ty-crud__toolbar-right">
+          <slot name="toolbar-right" :selected-rows="selectedRows" />
+        </div>
+      </div>
 
+      <div class="ty-crud__table-body">
         <ty-table
           :columns="columns"
           :data="list"
           :loading="loading"
+          :selection="selection"
           :total="total"
           v-model:page="page"
           v-model:page-size="pageSize"
           :actions-width="actionsWidth"
+          @selection-change="onSelectionChange"
         >
         <template #actions="{ row }">
           <el-button
@@ -44,6 +52,7 @@
           </el-dropdown>
         </template>
         </ty-table>
+      </div>
     </el-card>
 
     <ty-form-dialog
@@ -94,6 +103,8 @@ const props = withDefaults(
     actions?: CrudAction[]
     /** 操作列按钮超过该数量时折叠为「更多」。 */
     collapseCount?: number
+    /** 是否启用多选列（配合 #toolbar-right 做批量操作）。 */
+    selection?: boolean
     actionsWidth?: number | string
   }>(),
   {
@@ -103,6 +114,7 @@ const props = withDefaults(
     editReadonlyKeys: () => [],
     actions: () => ['edit', 'delete'],
     collapseCount: 2,
+    selection: false,
     actionsWidth: 220,
   },
 )
@@ -112,6 +124,7 @@ const list = ref<Record<string, any>[]>([])
 const total = ref(0)
 const page = ref(1)
 const pageSize = ref(10)
+const selectedRows = ref<Record<string, any>[]>([])
 
 const query = reactive<Record<string, any>>(buildModel(props.searchSchema))
 
@@ -223,15 +236,42 @@ function handleCommand(action: CrudActionItem, row: Record<string, any>): void {
   action.onClick(row)
 }
 
+function onSelectionChange(rows: Record<string, any>[]): void {
+  selectedRows.value = rows
+}
+
+defineExpose({ reload: fetchList })
+
 onMounted(fetchList)
 </script>
 
 <style scoped lang="scss">
+.ty-crud {
+  @apply flex h-full flex-col;
+}
+
 .ty-crud__search {
-  @apply mb-md;
+  @apply mb-md flex-shrink-0;
+}
+
+.ty-crud__table {
+  @apply flex min-h-0 flex-1 flex-col;
+
+  :deep(.el-card__body) {
+    @apply flex min-h-0 flex-1 flex-col;
+  }
 }
 
 .ty-crud__toolbar {
-  @apply mb-md;
+  @apply mb-md flex flex-shrink-0 items-center justify-between;
+}
+
+.ty-crud__toolbar-left,
+.ty-crud__toolbar-right {
+  @apply flex items-center gap-2;
+}
+
+.ty-crud__table-body {
+  @apply min-h-0 flex-1;
 }
 </style>

src/components/ty-table.vue

@@ -1,6 +1,14 @@
 <template>
   <div class="ty-table">
-    <el-table v-loading="loading" :data="data" border>
+    <div class="ty-table__body">
+      <el-table
+        v-loading="loading"
+        :data="data"
+        border
+        height="100%"
+        @selection-change="onSelectionChange"
+      >
+        <el-table-column v-if="selection" type="selection" width="48" />
         <el-table-column
           v-for="col in columns"
           :key="col.prop"
@@ -29,6 +37,7 @@
           </template>
         </el-table-column>
       </el-table>
+    </div>
 
     <el-pagination
       v-if="total > 0"
@@ -57,6 +66,8 @@ const props = withDefaults(
     /** 表格数据。 */
     data: Record<string, any>[]
     loading?: boolean
+    /** 是否启用多选列。 */
+    selection?: boolean
     /** 总条数（分页用）。 */
     total?: number
     page?: number
@@ -67,6 +78,7 @@ const props = withDefaults(
   }>(),
   {
     loading: false,
+    selection: false,
     total: 0,
     page: 1,
     pageSize: 10,
@@ -78,6 +90,7 @@ const props = withDefaults(
 const emit = defineEmits<{
   (e: 'update:page', page: number): void
   (e: 'update:pageSize', pageSize: number): void
+  (e: 'selection-change', rows: Record<string, any>[]): void
 }>()
 
 const currentPage = computed({
@@ -96,6 +109,10 @@ function onSizeChange(size: number): void {
   emit('update:pageSize', size)
 }
 
+function onSelectionChange(rows: Record<string, any>[]): void {
+  emit('selection-change', rows)
+}
+
 function formatDateTime(value: unknown): string {
   if (value == null || value === '') return '-'
   const d = new Date(Number(value))
@@ -105,7 +122,15 @@ function formatDateTime(value: unknown): string {
 </script>
 
 <style scoped lang="scss">
+.ty-table {
+  @apply flex h-full flex-col;
+}
+
+.ty-table__body {
+  @apply min-h-0 flex-1;
+}
+
 .ty-table__pagination {
-  @apply mt-md justify-end;
+  @apply mt-md flex-shrink-0 justify-end;
 }
 </style>

src/layouts/default.vue

@@ -1,5 +1,5 @@
 <template>
-  <div class="app-shell" :style="cssVars">
+  <div class="app-shell" :class="{ 'is-not-fixed': !app.headerFixed }" :style="cssVars">
     <ty-header
       :title="title"
       :logo="logo"
@@ -245,7 +245,14 @@ watch(
 .app-shell {
   display: flex;
   flex-direction: column;
+  height: 100vh;
+  overflow: hidden;
+
+  &.is-not-fixed {
+    height: auto;
     min-height: 100vh;
+    overflow: visible;
+  }
 }
 
 .app-body {
@@ -260,11 +267,18 @@ watch(
   flex: 1;
   flex-direction: column;
   min-width: 0;
+  min-height: 0;
 }
 
 .app-main {
   flex: 1;
+  min-height: 0;
   padding: 16px;
+  overflow-y: auto;
   background: var(--wm-bg-color-page);
+
+  .is-not-fixed & {
+    overflow-y: visible;
+  }
 }
 </style>

src/pages/system/user/index.vue

@@ -1,6 +1,8 @@
 <template>
   <ty-crud
+    ref="crudRef"
     entity-name="用户"
+    selection
     :columns="columns"
     :search-schema="searchSchema"
     :form-schema="formSchema"
@@ -12,7 +14,13 @@
     id-key="id"
     name-key="username"
     :edit-readonly-keys="['username']"
-  />
+  >
+    <template #toolbar-right="{ selectedRows }">
+      <el-button type="danger" :disabled="selectedRows.length === 0" @click="batchDelete(selectedRows)">
+        批量删除
+      </el-button>
+    </template>
+  </ty-crud>
 
   <el-dialog v-model="resetPwd.visible" title="重置密码" width="420px" destroy-on-close>
     <el-form label-width="80px">
@@ -29,8 +37,8 @@
 </template>
 
 <script setup lang="ts">
-import { reactive } from 'vue'
-import { ElMessage } from 'element-plus'
+import { reactive, ref } from 'vue'
+import { ElMessage, ElMessageBox } from 'element-plus'
 import type { CrudAction, JsonSchema, PageQuery, PageResult, TableColumn } from '@/types/crud'
 
 const STATUS_MAP = {
@@ -196,4 +204,16 @@ async function submitResetPwd(): Promise<void> {
   ElMessage.success('密码已重置')
   resetPwd.visible = false
 }
+
+const crudRef = ref()
+
+async function batchDelete(rows: Record<string, any>[]): Promise<void> {
+  await ElMessageBox.confirm(`确认删除选中的 ${rows.length} 个用户？`, '提示', { type: 'warning' })
+  for (const r of rows) {
+    const i = users.findIndex((x) => x.id === r.id)
+    if (i >= 0) users.splice(i, 1)
+  }
+  ElMessage.success('删除成功')
+  crudRef.value?.reload()
+}
 </script>