feat(web): 审计页支持按结果筛选错误日志

- AuditListParams 增加 result 参数并透传
- 审计页筛选工具栏增加'结果'下拉（成功/失败），选中即筛出对应事件
- 管理员选'失败'即可集中查看错误事件（如重名申请冲突）

web/src/api/index.ts

@@ -157,6 +157,7 @@ export interface AuditListParams {
   action?: string
   resource_type?: string
   resource_id?: string
+  result?: string
   since?: string
   until?: string
 }

web/src/views/admin/AuditView.vue

@@ -14,6 +14,7 @@ const filter = reactive({
   actor: '',
   action: '',
   resource_type: '',
+  result: '',
   since: '',
   until: '',
 })
@@ -29,6 +30,7 @@ async function load() {
       actor: filter.actor || undefined,
       action: filter.action || undefined,
       resource_type: filter.resource_type || undefined,
+      result: filter.result || undefined,
       since: filter.since ? new Date(filter.since).toISOString() : undefined,
       until: filter.until ? new Date(filter.until).toISOString() : undefined,
     })
@@ -71,6 +73,10 @@ onMounted(load)
           <el-option label="密钥" value="ssh_key" />
           <el-option label="申请" value="approval" />
         </el-select>
+        <el-select v-model="filter.result" placeholder="结果" clearable style="width: 110px" @change="onSearch">
+          <el-option label="成功" value="success" />
+          <el-option label="失败" value="failed" />
+        </el-select>
         <el-date-picker
           v-model="filter.since"
           type="datetime"