feat(infra): 新增状态机管理功能模块

- 新增状态机模型和状态流转的完整 CRUD 功能
- 添加字典编码 OBJECT_STATUS_MODEL_OBJECT_TYPE_DICT_CODE 用于对象类型下拉选择
- 实现状态机列表页、搜索组件、操作对话框和状态流转管理
- 新增 infra API 接口封装和类型定义
- 遵循项目规范：使用 TableSearchFields 搜索组件、BusinessTableActionCell 操作列、统一的状态标签展示

涉及文件：
- src/constants/dict.ts: 新增对象类型字典编码
- src/service/api/infra.ts: 新增状态机和状态流转相关 API
- src/typings/api/infra.d.ts: 新增状态机相关类型定义
- src/views/infra/state-machine/: 新增状态机管理页面及子组件

src/views/infra/state-machine/modules/state-machine-search.vue

@@ -0,0 +1,142 @@
+<script setup lang="ts">
+import { computed, reactive, watch } from 'vue';
+import { OBJECT_STATUS_MODEL_OBJECT_TYPE_DICT_CODE } from '@/constants/dict';
+import TableSearchFields, { type SearchField } from '@/components/custom/table-search-fields.vue';
+import { statusOptions } from '../shared';
+
+defineOptions({ name: 'StateMachineSearch' });
+
+const emit = defineEmits<{
+  reset: [];
+  search: [];
+}>();
+
+const model = defineModel<Api.Infra.ObjectStatusModelSearchParams>('model', { required: true });
+
+const booleanOptions = [
+  { label: '是', value: 1 },
+  { label: '否', value: 0 }
+];
+
+const searchModel = reactive<{
+  keyword: string;
+  objectType?: string;
+  status?: Api.Infra.CommonStatus;
+  initialFlag?: number;
+  terminalFlag?: number;
+}>({
+  keyword: '',
+  objectType: undefined,
+  status: undefined,
+  initialFlag: undefined,
+  terminalFlag: undefined
+});
+
+let syncingFromSource = false;
+
+watch(
+  () =>
+    [
+      model.value.keyword,
+      model.value.objectType,
+      model.value.status,
+      model.value.initialFlag,
+      model.value.terminalFlag
+    ] as const,
+  ([keyword, objectType, status, initialFlag, terminalFlag]) => {
+    syncingFromSource = true;
+    searchModel.keyword = keyword ?? '';
+    searchModel.objectType = objectType;
+    searchModel.status = status;
+
+    if (initialFlag === undefined) {
+      searchModel.initialFlag = undefined;
+    } else {
+      searchModel.initialFlag = initialFlag ? 1 : 0;
+    }
+
+    if (terminalFlag === undefined) {
+      searchModel.terminalFlag = undefined;
+    } else {
+      searchModel.terminalFlag = terminalFlag ? 1 : 0;
+    }
+
+    syncingFromSource = false;
+  },
+  { immediate: true, flush: 'sync' }
+);
+
+watch(
+  () =>
+    [
+      searchModel.keyword,
+      searchModel.objectType,
+      searchModel.status,
+      searchModel.initialFlag,
+      searchModel.terminalFlag
+    ] as const,
+  ([keywordValue, objectType, status, initialFlag, terminalFlag]) => {
+    if (syncingFromSource) {
+      return;
+    }
+
+    model.value.keyword = keywordValue.trim() || undefined;
+    model.value.objectType = objectType;
+    model.value.status = status;
+    model.value.initialFlag = initialFlag === undefined ? undefined : initialFlag === 1;
+    model.value.terminalFlag = terminalFlag === undefined ? undefined : terminalFlag === 1;
+  },
+  { flush: 'sync' }
+);
+
+const fields = computed<SearchField[]>(() => [
+  {
+    key: 'objectType',
+    label: '对象类型',
+    type: 'dict',
+    placeholder: '请选择对象类型',
+    dictCode: OBJECT_STATUS_MODEL_OBJECT_TYPE_DICT_CODE
+  },
+  {
+    key: 'keyword',
+    label: '关键字',
+    type: 'input',
+    placeholder: '请输入状态名称或状态编码'
+  },
+  {
+    key: 'status',
+    label: '配置状态',
+    type: 'select',
+    placeholder: '请选择配置状态',
+    options: statusOptions
+  },
+  {
+    key: 'initialFlag',
+    label: '初始状态',
+    type: 'select',
+    placeholder: '请选择是否初始状态',
+    options: booleanOptions
+  },
+  {
+    key: 'terminalFlag',
+    label: '终态',
+    type: 'select',
+    placeholder: '请选择是否终态',
+    options: booleanOptions
+  }
+]);
+
+function reset() {
+  emit('reset');
+}
+
+function search() {
+  emit('search');
+}
+</script>
+
+<template>
+  <TableSearchFields v-model="searchModel" :fields="fields" :columns="4" @reset="reset" @search="search" />
+</template>
+
+<style scoped></style>