chore(fms-vue): WIP 基线快照——收编工作区未提交的前端改动

不含 fms-api Java 侧改动与后续导航状态化阶段提交。主要内容：
- ui 组件库：date/dropdown/form/input/popover/select/tooltip 调整，
  新增 Segmented 组件；fms-table 可编辑单元格渲染器与 FileCard 更新
- 模块管理：列表配置加载自动补全、查询缺配徽标与一键补充、
  结构编辑内核 useStructureEditing/useBandLayout、子表表格编辑方式、
  分组标题多语言、I18nKeyCell 等（含配套 spec）
- 布局/主题/仪表盘/演示页小幅更新

code/fms/fms-vue/tests/unit/form-edit-panel-mount.spec.js

@@ -0,0 +1,96 @@
+/**
+ * 复现用：新建空数据模块后 FormEditPanel 首次挂载（全部空数组）。
+ * 若存在响应式自触发循环，Vue 会抛 "Maximum recursive updates exceeded"。
+ */
+import { mount } from '@vue/test-utils'
+import { describe, expect, it, vi } from 'vitest'
+import { createPinia, setActivePinia } from 'pinia'
+import ModuleFormEditPanel from '@/views/system/module-management/components/form-edit/FormEditPanel.vue'
+
+vi.mock('@/services/api', () => ({
+  loadDataApi: vi.fn(async () => ({ data: [] })),
+  saveObjectApi: vi.fn(),
+  nextIdApi: vi.fn(),
+  describeApi: vi.fn(async () => ({ data: [] })),
+}))
+
+const StubDraggable = {
+  name: 'draggable',
+  props: {
+    list: { type: Array, default: () => [] },
+    itemKey: { type: String, default: undefined },
+  },
+  emits: ['start', 'end'],
+  template: `
+    <div class="stub-draggable">
+      <template v-for="el in list" :key="el[itemKey || 'key']">
+        <slot name="item" :element="el" />
+      </template>
+      <slot name="footer" />
+    </div>
+  `,
+}
+
+function mountEmptyPanel() {
+  return mount(ModuleFormEditPanel, {
+    props: {
+      moduleId: 'm1',
+      editConfig: [],
+      listConfig: [],
+      fields: [],
+      groups: [],
+      editMode: 'form',
+      loading: false,
+      active: true,
+    },
+    global: { stubs: { draggable: StubDraggable } },
+  })
+}
+
+const fields = [
+  { b_id: '1', b_name: '姓名', b_field: 'name', b_type: 'input' },
+  { b_id: '2', b_name: '年龄', b_field: 'age', b_type: 'number' },
+]
+const groups = [
+  { b_id: 'g1', b_module_id: 'm1', b_parent_id: null, b_title: '基本信息', b_xh: 10, b_canuse: 1 },
+]
+const editConfig = [
+  { b_id: 'e1', b_module_id: 'm1', b_field_id: '1', b_group_id: 'g1', b_visible: 1, b_required: 0, b_readonly: 0, b_disabled: 0, b_colspan: 24, b_height: null, b_placeholder: null, b_xh: 10 },
+  { b_id: 'e2', b_module_id: 'm1', b_field_id: '2', b_group_id: null, b_visible: 1, b_required: 0, b_readonly: 0, b_disabled: 0, b_colspan: 24, b_height: null, b_placeholder: null, b_xh: 20 },
+]
+
+describe('FormEditPanel 空模块挂载', () => {
+  it('从空挂载不触发递归更新', async () => {
+    setActivePinia(createPinia())
+    const wrapper = mountEmptyPanel()
+    await wrapper.vm.$nextTick()
+    await wrapper.vm.$nextTick()
+    expect(wrapper.exists()).toBe(true)
+    wrapper.unmount()
+  })
+
+  it('已有数据模块切到空草稿（新建模块序列）不触发递归更新', async () => {
+    setActivePinia(createPinia())
+    const wrapper = mount(ModuleFormEditPanel, {
+      props: {
+        moduleId: 'm1',
+        editConfig: editConfig.map((r) => ({ ...r })),
+        listConfig: [],
+        fields,
+        groups: groups.map((g) => ({ ...g })),
+        editMode: 'form',
+        loading: false,
+        active: true,
+      },
+      global: { stubs: { draggable: StubDraggable } },
+    })
+    await wrapper.vm.$nextTick()
+    await wrapper.vm.$nextTick()
+    // 模拟 addModule：drafts 整体替换为空草稿，props 全部变为空数组
+    await wrapper.setProps({ editConfig: [], fields: [], groups: [] })
+    await wrapper.vm.$nextTick()
+    await new Promise((r) => setTimeout(r, 30))
+    expect(wrapper.exists()).toBe(true)
+    wrapper.unmount()
+  })
+})