Optimize prompts

bot.go

@@ -355,12 +355,6 @@ func contentBlocksForMessage(msg Message) []anthropic.BetaContentBlockParamUnion
 	return blocks
 }
 
-func (b *Bot) isNewChat(chatID int64) bool {
-	var count int64
-	b.db.Model(&Message{}).Where("chat_id = ? AND bot_id = ?", chatID, b.botID).Count(&count)
-	return count == 0 // Only consider a chat new if it has 0 messages
-}
-
 // roleHasScope reports whether role (with pre-loaded Scopes) contains the given scope name.
 func roleHasScope(role Role, scope string) bool {
 	for _, s := range role.Scopes {