fix: 图片上传改用 POST + axios.put，与ManagerWorkspace一致

Co-Authored-By: Claude <noreply@anthropic.com>

frontend/src/views/desktop/CustomerManage.vue

@@ -7,6 +7,7 @@ import { ElMessage, ElMessageBox } from 'element-plus'
 import { getManagerColor as mgrColorFn, getMgrTextColor, loadManagerColors } from '@/utils/managerColor'
 import { compressImage } from '@/utils/image'
 import api from '@/api/index'
+import axios from 'axios'
 
 const auth = useAuthStore()
 const themeStore = useThemeStore()
@@ -61,8 +62,8 @@ async function handleIndivPhotoUpload(event: Event) {
     if (form.photos.length >= 9) break
     try {
       const compressed = await compressImage(file, { maxPixels: 1920, quality: 0.8 })
-      const presignRes = await api.get('/upload/presigned-url', { params: { filename: compressed.name, content_type: compressed.type || 'image/jpeg' } })
-      await api.put(presignRes.data.upload_url, compressed, { headers: { 'Content-Type': compressed.type || 'image/jpeg' } })
+      const presignRes = await api.post('/upload/presigned-url', null, { params: { filename: compressed.name, content_type: compressed.type || 'image/jpeg' } })
+      await axios.put(presignRes.data.upload_url, compressed, { headers: { 'Content-Type': compressed.type || 'image/jpeg' } })
       form.photos.push(presignRes.data.object_key)
       indivPhotoUrls.value[presignRes.data.object_key] = URL.createObjectURL(compressed)
     } catch (_) { ElMessage.error('上传失败') }