fix: honor presign proxy upload URLs

src/composables/usePresignedUpload.ts

@@ -213,10 +213,13 @@ export function usePresignedUpload(options: UsePresignedUploadOptions = {}) {
       presignStatus.value = PRESIGN_UPLOAD_STATUS.UPLOADING
 
       const progressHandler = createProgressHandler(options?.onProgress)
+      const uploadUrl =
+        session.proxy_upload_url || session.upload_url || session.legacy_proxy_upload_url
       const response = await PresignUploadService.proxyUpload(
         session.upload_id,
         file,
-        progressHandler
+        progressHandler,
+        uploadUrl
       )
 
       if (response.code === 200 && response.detail?.code) {

src/services/presign-upload.ts

@@ -19,12 +19,17 @@ export class PresignUploadService {
   static async proxyUpload(
     uploadId: string,
     file: File,
-    onProgress?: (progress: UploadProgress) => void
+    onProgress?: (progress: UploadProgress) => void,
+    uploadUrl?: string
   ): Promise<ApiResponse<PresignUploadResult>> {
     const formData = new FormData()
     formData.append('file', file)
 
-    return api.put(`/presign/upload/proxy/${uploadId}`, formData, multipartUploadConfig(onProgress))
+    return api.put(
+      uploadUrl || `/presign/upload/proxy/${uploadId}`,
+      formData,
+      multipartUploadConfig(onProgress)
+    )
   }
 
   static async confirmUpload(

src/types/presign-upload.ts

@@ -22,6 +22,8 @@ export interface PresignInitRequest {
 export interface PresignInitResponse {
   upload_id: string
   upload_url: string
+  proxy_upload_url?: string
+  legacy_proxy_upload_url?: string
   mode: PresignUploadMode
   expires_in: number
 }