add system in aiTest

src/routes/api/aiTest.js

@@ -56,7 +56,7 @@ const aiFollowupQuestion = async (req, res) => {
 
   try {
 
-    const { prompt, sessionId, provider, model = "gpt-4o-mini", key } = req.body;
+    const { prompt, sessionId, provider, model = "gpt-4o-mini", key, system } = req.body;
 
     if (!key || !PROVIDER_KEYS.includes(key)) {
       return res.status(403).json({
@@ -101,7 +101,7 @@ const aiFollowupQuestion = async (req, res) => {
       conversation = {
         sessionId: newSessionId,
         conversationHistory: [
-          { role: 'system', content: 'answer within 10 words' },
+          { role: 'system', content: system },
           { role: 'user', content: prompt },
         ],
       };