fix: 改进企业选择时的职位列表加载

- 改进错误处理，添加更详细的日志
- 简化 selectOrg 函数逻辑
- 确保职位列表在企业选择后正确加载显示

offer_frontend/src/views/portal/HomeView.vue

@@ -132,15 +132,18 @@ function formatDate(dt) {
 
 async function selectOrg(org) {
   selectedOrg.value = org
-  selectedJob.value = null
   jobs.value = []
   jobsError.value = false
   jobsLoading.value = true
   try {
     const { data } = await getJobs({ organization: org.id })
     jobs.value = data.results
-  } catch { jobsError.value = true }
+  } catch (err) {
-  finally { jobsLoading.value = false }
+    console.error('Failed to fetch jobs:', err)
+    jobsError.value = true
+  } finally {
+    jobsLoading.value = false
+  }
 }
 
 function goToJobDetail(job) {