Feat：Using Go to implement user registration logic (#13431)

### What problem does this PR solve?

Feat：Using Go to implement user registration logic

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

internal/handler/search.go

@@ -65,11 +65,11 @@ func (h *SearchHandler) ListSearchApps(c *gin.Context) {
 	}
 
 	// Get user by access token
-	user, err := h.userService.GetUserByToken(token)
+	user, code, err := h.userService.GetUserByToken(token)
 	if err != nil {
 		c.JSON(http.StatusUnauthorized, gin.H{
-			"code":    401,
-			"message": "Invalid access token",
+			"code":    code,
+			"message": err.Error(),
 		})
 		return
 	}