feat(def): 流程定义按应用筛选——列表应用列+筛选下拉、编辑器归属应用选择

- Defs.vue：工具栏"按应用筛选"下拉（/def/appkeys 数据源，clearable/filterable）+ 应用列（空显示 -）
- 编辑器：头部"应用"Select（clearable/filterable/allow-create，可手输新值），载入回显、保存透传 appKey
- defList 支持 appKey 可选参数、新增 defAppKeys；新参数全部可选，与后端部署顺序无依赖

src/views/flow/admin/Defs.vue

@@ -23,11 +23,15 @@ const sourceText = ref("");
 const sourceTitle = ref("");
 // 操作按钮区 + 表格，无搜索、无分页
 const tableHeight = ref(Utils.useTableHeight({ isOperat: true }));
+// 按应用筛选（flw_def.app_key，2026-10-10）：下拉数据源来自 /def/appkeys
+const appKeys = ref<string[]>([]);
+const filterApp = ref("");
 
 const columns = [
     { title: "序号", type: "index", width: 70, align: "center" },
     { title: "流程", key: "name", minWidth: 180 },
     { title: "编码", key: "code", width: 160 },
+    { title: "应用", key: "appKey", width: 110, align: "center", render: (h: any, p: any) => h("span", p.row.appKey || "-") },
     { title: "版本", key: "version", width: 70, align: "center" },
     { title: "状态", width: 90, align: "center", render: (h: any, p: any) => {
         const c = p.row.status === 1 ? "green" : p.row.status === 0 ? "orange" : "gray";
@@ -58,12 +62,21 @@ const columns = [
 async function load() {
     loading.value = true;
     try {
-        rows.value = (await flowApi.defList().send()) || [];
+        rows.value = (await flowApi.defList({ appKey: filterApp.value || undefined }).send()) || [];
     } finally {
         loading.value = false;
     }
 }
 
+/** 应用清单（筛选下拉）：flw_def 已标注 ∪ 已注册回调的应用，失败降级为空下拉 */
+async function loadAppKeys() {
+    try {
+        appKeys.value = (await flowApi.defAppKeys().send()) || [];
+    } catch {
+        appKeys.value = [];
+    }
+}
+
 /** 新建：编辑器空模板（默认含一个待配置审批节点） */
 function onNew() {
     router.push({ path: "/admin/defs/editor" });
@@ -148,7 +161,10 @@ function onDiagram(row: any) {
     router.push({ path: "/diagram", query: { defId: row.id } });
 }
 
-onMounted(load);
+onMounted(() => {
+    load();
+    loadAppKeys();
+});
 </script>
 
 <template>
@@ -157,6 +173,10 @@ onMounted(load);
             <!-- 操作按钮区：主操作靠左（bsch应用页规范 §1） -->
             <div class="fix mb-12">
                 <Button class="fl" type="primary" size="large" @click="onNew">新建流程</Button>
+                <Select v-model="filterApp" clearable filterable placeholder="按应用筛选" class="fl"
+                    style="width: 200px; margin-left: 8px" @on-change="load">
+                    <Option v-for="k in appKeys" :key="k" :value="k">{{ k }}</Option>
+                </Select>
             </div>
 
             <Table :columns="columns" :data="rows" :loading="loading" class="link-table table-bottom-box"