Update server.js

Update server.js

Update server.js

Fix CSS syntax error in style.css

Update fmt.Println message from 'Hello' to 'Goodbye'

Update print statement from 'Hello' to 'Goodbye'

Refactor API keys and enhance conversation management

Update print statement from 'Hello' to 'Goodbye'

Update chat.ejs

Enhance chat message rendering with thinking content

Change greeting from 'Hello' to 'Goodbye'

Change greeting from 'Hello' to 'Goodbye'

Clear conversations and reset user statistics

Adjust database path for Vercel environment

Update print statement from 'Hello' to 'Goodbye'