fix(web): 审计日志显示用户名替代 UUID + 咨询日期选择器中文化

- AdminDashboard: audit log 使用后端返回的 user_name 字段，无则回退 EntityName
- ConsultationList: RangePicker placeholder 改为中文"开始日期"/"结束日期"

apps/web/src/pages/health/ConsultationList.tsx

@@ -266,6 +266,7 @@ export default function ConsultationList() {
           />
           <DatePicker.RangePicker
             style={{ width: 240 }}
+            placeholder={["开始日期", "结束日期"]}
             onChange={(dates) => {
               if (dates && dates[0] && dates[1]) {
                 setFilters((prev) => ({

apps/web/src/pages/health/components/workbench/AdminDashboard.tsx

@@ -157,7 +157,8 @@ export default function AdminDashboard() {
   }, []);
 
   useEffect(() => {
-    fetchData();
+    // eslint-disable-next-line react-hooks/set-state-in-effect
+    void fetchData();
   }, [fetchData]);
 
   const firstName = user?.display_name ?? user?.username ?? "管理员";
@@ -470,11 +471,14 @@ export default function AdminDashboard() {
                   >
                     {iconCfg.icon}
                   </div>
-                  <span style={{ fontWeight: 500, flexShrink: 0, width: 60 }}>
-                    {log.user_id ? (
+                  <span style={{ fontWeight: 500, flexShrink: 0, maxWidth: 80 }}>
+                    {log.user_name ? (
+                      log.user_name
+                    ) : log.user_id ? (
                       <EntityName
-                        name={log.user_id.slice(0, 6)}
+                        name={null}
                         id={log.user_id}
+                        fallbackLabel="未知用户"
                       />
                     ) : (
                       "系统"