Better error log (#1696)

<!-- CURSOR_SUMMARY -->
> [!NOTE]
> Enhances AI stream error logging to include request ID and detailed
error info in `chat_stream_handlers.ts`.
> 
> - **Backend**
> - **Logging**: In `src/ipc/handlers/chat_stream_handlers.ts` `onError`
handler for `streamText` now logs a detailed message including request
ID and `errorMessage`, replacing the previous generic error log.
> 
> <sup>Written by [Cursor
Bugbot](https://cursor.com/dashboard?tab=bugbot) for commit
3519f494e8e400403973f014cede9ff771d5a9ad. This will update automatically
on new commits. Configure
[here](https://cursor.com/dashboard?tab=bugbot).</sup>
<!-- /CURSOR_SUMMARY -->

<!-- This is an auto-generated description by cubic. -->
---
## Summary by cubic
Improve error logging in chat text streaming by replacing the generic
log with a structured entry that includes the request ID (when
available), the parsed error message, and the full error object. This
makes failures easier to trace and correlate with backend requests.

<sup>Written for commit 3519f494e8e400403973f014cede9ff771d5a9ad.
Summary will update automatically on new commits.</sup>

<!-- End of auto-generated description by cubic. -->

src/ipc/handlers/chat_stream_handlers.ts

@@ -842,7 +842,6 @@ This conversation includes one or more image attachments. When the user uploads
             tools,
             messages: chatMessages.filter((m) => m.content),
             onError: (error: any) => {
-              logger.error("Error streaming text:", error);
               let errorMessage = (error as any)?.error?.message;
               const responseBody = error?.error?.responseBody;
               if (errorMessage && responseBody) {
@@ -852,6 +851,10 @@ This conversation includes one or more image attachments. When the user uploads
               const requestIdPrefix = isEngineEnabled
                 ? `[Request ID: ${dyadRequestId}] `
                 : "";
+              logger.error(
+                `AI stream text error for request: ${requestIdPrefix} errorMessage=${errorMessage} error=`,
+                error,
+              );
               event.sender.send("chat:response:error", {
                 chatId: req.chatId,
                 error: `${AI_STREAMING_ERROR_MESSAGE_PREFIX}${requestIdPrefix}${message}`,