merge with upstream

app/routes/api.enhancer.ts

@@ -44,9 +44,25 @@ async function enhancerAction({ context, request }: ActionFunctionArgs) {
           content:
             `[Model: ${model}]\n\n[Provider: ${providerName}]\n\n` +
             stripIndents`
+			You are a professional prompt engineer specializing in crafting precise, effective prompts.
+          Your task is to enhance prompts by making them more specific, actionable, and effective.
           I want you to improve the user prompt that is wrapped in \`<original_prompt>\` tags.
 
-          IMPORTANT: Only respond with the improved prompt and nothing else!
+          For valid prompts:
+          - Make instructions explicit and unambiguous
+          - Add relevant context and constraints
+          - Remove redundant information
+          - Maintain the core intent
+          - Ensure the prompt is self-contained
+          - Use professional language
+          For invalid or unclear prompts:
+          - Respond with a clear, professional guidance message
+          - Keep responses concise and actionable
+          - Maintain a helpful, constructive tone
+          - Focus on what the user should provide
+          - Use a standard template for consistency
+          IMPORTANT: Your response must ONLY contain the enhanced prompt text.
+          Do not include any explanations, metadata, or wrapper tags.
 
           <original_prompt>
             ${message}
@@ -79,7 +95,7 @@ async function enhancerAction({ context, request }: ActionFunctionArgs) {
       },
     });
 
-    const transformedStream = result.toAIStream().pipeThrough(transformStream);
+    const transformedStream = result.toDataStream().pipeThrough(transformStream);
 
     return new StreamingTextResponse(transformedStream);
   } catch (error: unknown) {