feat: improve error messaging for stream termination errors from provider

src/core/task/Task.ts

@@ -3257,9 +3257,10 @@ export class Task extends EventEmitter<TaskEvents> implements TaskLike {
 						// Determine cancellation reason
 						const cancelReason: ClineApiReqCancelReason = this.abort ? "user_cancelled" : "streaming_failed"
 
+						const rawErrorMessage = error.message ?? JSON.stringify(serializeError(error), null, 2)
 						const streamingFailedMessage = this.abort
 							? undefined
-							: (error.message ?? JSON.stringify(serializeError(error), null, 2))
+							: `${t("common:interruption.streamTerminatedByProvider")}: ${rawErrorMessage}`
 
 						// Clean up partial state
 						await abortStream(cancelReason, streamingFailedMessage)

src/i18n/locales/en/common.json

@@ -172,7 +172,8 @@
 	},
 	"interruption": {
 		"responseInterruptedByUser": "Response interrupted by user",
-		"responseInterruptedByApiError": "Response interrupted by API error"
+		"responseInterruptedByApiError": "Response interrupted by API error",
+		"streamTerminatedByProvider": "Provider ended the request"
 	},
 	"storage": {
 		"prompt_custom_path": "Enter custom conversation history storage path, leave empty to use default location",