feat(admin): 用户体验体系化提升与高危缺陷修复

UX 缺陷修复:
- 校验失败不再卡死弹窗按钮(Users/Roles/Bills)
- 押金收取/批量收取/添加分期防重复提交;切换房型重置勾选
- AI 表单/批量确认不再出现"假成功"
- Dashboard 各数据模块独立加载,单接口失败不再整页清零
- 房间可视化加载失败显示错误态而非永久转圈
- 学生编辑表单回填前重置,避免字段残留污染
- 覆盖式导入增加二次确认;恢复默认考勤时段确认并同步表单
- 金数据匹配关闭前确认,同步中禁止误关

体验提升:
- 新增统一 QueryErrorState/QueryEmpty,20+ 页面加载失败显示错误态与重试
- 全局 ErrorBoundary + RouteKeeper 逐页兜底
- 新增 usePageVisible/useVisibleRefetch,保活页面切回自动刷新数据
- 新增首次登录角色引导 RoleTour 与业务闭环 NextStepHint 引导卡
- 重构 A2UI:useSubmissionState/useXCardSurface 收敛状态与命令生命周期,
  ArtifactErrorBoundary 渲染降级,图表空数据占位
- AI 助手欢迎语与建议话术按角色定制,会话列表空态引导
- 更新 a2ui-contract.md 契约文档说明实现现状

apps/admin/src/components/AiChat/DynamicForm.tsx

@@ -1,4 +1,4 @@
-import React, { useEffect, useMemo, useRef, useState } from 'react';
+import React, { useEffect, useMemo } from 'react';
 import {
   XCard,
   registerCatalog,
@@ -18,6 +18,7 @@ import {
 } from 'antd';
 import dayjs from 'dayjs';
 import type { AiFormField, AiFormSchema } from './types';
+import { useSubmissionState, useXCardSurface } from './useSubmissionState';
 
 const FORM_CATALOG_ID = 'gongxue-form-catalog';
 
@@ -179,63 +180,46 @@ export interface DynamicFormProps {
  * success/failure/loading transitions are pushed as incremental commands.
  */
 export const DynamicForm: React.FC<DynamicFormProps> = ({ form, disabled, onSubmit }) => {
-  const [submitting, setSubmitting] = useState(false);
-  const [submitted, setSubmitted] = useState(false);
-  const [error, setError] = useState<string | null>(null);
-  const commandsRef = useRef<XAgentCommand_v0_9[]>([]);
-  const [commands, setCommands] = useState<XAgentCommand_v0_9[]>([]);
-  const idRef = useRef<string>('');
+  const sid = surfaceId(form.id);
+  const { submitting, submitted, error, run } = useSubmissionState();
+  const { commands, pushCommands } = useXCardSurface(sid);
 
   useEffect(() => {
-    const sid = surfaceId(form.id);
-    if (idRef.current !== sid) {
-      commandsRef.current = [];
-      idRef.current = sid;
-    }
-    const cmds = commandsRef.current;
-    if (cmds.length === 0) {
-      cmds.push({
+    const cmds: XAgentCommand_v0_9[] = [
+      {
         version: 'v0.9',
         createSurface: { surfaceId: sid, catalogId: FORM_CATALOG_ID },
-      });
-    }
-    cmds.push({
-      version: 'v0.9',
-      updateDataModel: {
-        surfaceId: sid,
-        path: '/form',
-        value: { ...form, submitting, submitted, error },
       },
-    });
-    cmds.push({
-      version: 'v0.9',
-      updateComponents: {
-        surfaceId: sid,
-        components: [
-          {
-            id: 'root',
-            component: 'FormPreview',
-            form: { path: '/form' },
-            disabled: Boolean(disabled),
-          },
-        ],
+      {
+        version: 'v0.9',
+        updateDataModel: {
+          surfaceId: sid,
+          path: '/form',
+          value: { ...form, submitting, submitted, error },
+        },
       },
-    });
-    setCommands([...cmds]);
-  }, [disabled, error, form, submitted, submitting]);
+      {
+        version: 'v0.9',
+        updateComponents: {
+          surfaceId: sid,
+          components: [
+            {
+              id: 'root',
+              component: 'FormPreview',
+              form: { path: '/form' },
+              disabled: Boolean(disabled),
+            },
+          ],
+        },
+      },
+    ];
+    pushCommands(cmds);
+  }, [disabled, error, form, pushCommands, sid, submitted, submitting]);
 
-  const handleSubmit = async (values: Record<string, unknown>) => {
-    if (submitting) return;
-    setSubmitting(true);
-    setError(null);
-    try {
+  const handleSubmit = (values: Record<string, unknown>) => {
+    void run(async () => {
       await onSubmit(values);
-      setSubmitted(true);
-    } catch (reason) {
-      setError(reason instanceof Error ? reason.message : '提交失败，请稍后重试');
-    } finally {
-      setSubmitting(false);
-    }
+    });
   };
 
   const handleAction = (payload: ActionPayload) => {