feat(web-media): improve upload/send reliability

- add retry logic for presigned media upload
- add retry for text send with idempotent client message id
- avoid dropping already sent media message when attachment metadata call fails

web/src/api/chats.ts

@@ -104,17 +104,32 @@ export async function uploadToPresignedUrl(
   uploadUrl: string,
   requiredHeaders: Record<string, string>,
   file: File,
-  onProgress?: (percent: number) => void
+  onProgress?: (percent: number) => void,
+  retries = 2
 ): Promise<void> {
-  await axios.put(uploadUrl, file, {
-    headers: requiredHeaders,
-    onUploadProgress: (progressEvent) => {
-      if (!onProgress || !progressEvent.total) {
-        return;
+  let attempt = 0;
+  while (attempt <= retries) {
+    try {
+      await axios.put(uploadUrl, file, {
+        headers: requiredHeaders,
+        onUploadProgress: (progressEvent) => {
+          if (!onProgress || !progressEvent.total) {
+            return;
+          }
+          onProgress(Math.round((progressEvent.loaded * 100) / progressEvent.total));
+        }
+      });
+      return;
+    } catch (error) {
+      const status = axios.isAxiosError(error) ? error.response?.status : undefined;
+      const retryable = status === undefined || status >= 500;
+      if (!retryable || attempt >= retries) {
+        throw error;
       }
-      onProgress(Math.round((progressEvent.loaded * 100) / progressEvent.total));
+      attempt += 1;
+      await new Promise((resolve) => window.setTimeout(resolve, 400 * attempt));
     }
-  });
+  }
 }
 
 export async function attachFile(messageId: number, fileUrl: string, fileType: string, fileSize: number): Promise<void> {