fix: pass Search and SearchLocation parameters to ChatOptions in /chat endpoint

Signed-off-by: majiayu000 <1835304752@qq.com>

internal/server/chat.go

@@ -144,6 +144,8 @@ func (h *ChatHandler) HandleChat(c *gin.Context) {
 					FrequencyPenalty: request.FrequencyPenalty,
 					PresencePenalty:  request.PresencePenalty,
 					Thinking:         request.Thinking,
+					Search:           request.Search,
+					SearchLocation:   request.SearchLocation,
 				}
 
 				session, err := chatter.Send(chatReq, opts)