webui: Add a "Continue" Action for Assistant Message (#16971)

* feat: Add "Continue" action for assistant messages

* feat: Continuation logic & prompt improvements

* chore: update webui build output

* feat: Improve logic for continuing the assistant message

* chore: update webui build output

* chore: Linting

* chore: update webui build output

* fix: Remove synthetic prompt logic, use the prefill feature by sending the conversation payload ending with assistant message

* chore: update webui build output

* feat: Enable "Continue" button based on config & non-reasoning model type

* chore: update webui build output

* chore: Update packages with `npm audit fix`

* fix: Remove redundant error

* chore: update webui build output

* chore: Update `.gitignore`

* fix: Add missing change

* feat: Add auto-resizing for Edit Assistant/User Message textareas

* chore: update webui build output

tools/server/webui/src/lib/services/chat.ts

@@ -312,7 +312,6 @@ export class ChatService {
 		let aggregatedContent = '';
 		let fullReasoningContent = '';
 		let aggregatedToolCalls: ApiChatCompletionToolCall[] = [];
-		let hasReceivedData = false;
 		let lastTimings: ChatMessageTimings | undefined;
 		let streamFinished = false;
 		let modelEmitted = false;
@@ -352,8 +351,6 @@ export class ChatService {
 				return;
 			}
 
-			hasReceivedData = true;
-
 			if (!abortSignal?.aborted) {
 				onToolCallChunk?.(serializedToolCalls);
 			}
@@ -415,7 +412,6 @@ export class ChatService {
 
 							if (content) {
 								finalizeOpenToolCallBatch();
-								hasReceivedData = true;
 								aggregatedContent += content;
 								if (!abortSignal?.aborted) {
 									onChunk?.(content);
@@ -424,7 +420,6 @@ export class ChatService {
 
 							if (reasoningContent) {
 								finalizeOpenToolCallBatch();
-								hasReceivedData = true;
 								fullReasoningContent += reasoningContent;
 								if (!abortSignal?.aborted) {
 									onReasoningChunk?.(reasoningContent);
@@ -446,15 +441,6 @@ export class ChatService {
 			if (streamFinished) {
 				finalizeOpenToolCallBatch();
 
-				if (
-					!hasReceivedData &&
-					aggregatedContent.length === 0 &&
-					aggregatedToolCalls.length === 0
-				) {
-					const noResponseError = new Error('No response received from server. Please try again.');
-					throw noResponseError;
-				}
-
 				const finalToolCalls =
 					aggregatedToolCalls.length > 0 ? JSON.stringify(aggregatedToolCalls) : undefined;